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Controller Catalog (Section) - Power Switching Devices

1. 6 35 mm E CH e De i U 3 82 in l 97 03 mm 3 25 in doas 82 55 mm IDE e n n l n NS QC y 0 586 in 1 910 in 14 88 mm 48 51 mm 5 54 in zt 140 72 mm 1 85 in 46 99 mm 0 94 in 23 88 mm 334 m WATLOW Power Switching Devices E SAFE Il Product Rating Curve 70 65 90 C Wire 60 o a EE UL Conditions of Acceptability 5 MZ 10 Applications must be tested as described below for specific wire t RS i insulation or specific wire gauge sizes Tests shall be performed in o 50 oO 1 z the end application under worst case operating conditions E o o Test Procedure e 45 O mo A Monitor temperatures of terminals using thermocouples between the a S o ring terminal and connectors L1 L2 or L3 The temperature must not 40 ou Lo exceed 203 F 95 C 2a N z These ratings apply to B Monitor temperatures of wire insulation using a thermocouple located E lt ph its with cvel three inches from the connector The temperature must not exceed the X 35 00 d ee s S ced Pena insulation rating of the wire 1 more Consult thefast 80A is maximum rating when operating above 240VAC 30 1 f i
2. Dimensions Output Amperage I gam F 305 mm gt i S em y o 3 i L 9 2 in So aa State Power Control 16 6 in 234 mm 421 mm d c o oq ok mini 8 D Rf m 7 in 178 mm asim 7 O4 Os Os Bottom View d 09g r C6 9g E 07 T A wA Y ountin lange M Already Installed Front View t adi Single Phase Configuration This configuration can be purchased with any or all the features available on the POWER SERIES based on customer preference It is intended for resistive heaters but can also be used on transformer connected loads in the phase angle firing mode Three Phase Two Leg Configuration This configuration is intended for zero cross firing only into a stable resistive heater Typically a three phase delta or ungrounded wye connected heater is used and only two of the three VAC line phases are switched The third phase is a direct connection through a bussbar on board the POWER SERIES Heater current monitoring and kVA options are available via the heater diagnostics option Three Phase Three Leg Configuration All POWER SERIES options are available with this configuration It works well with phase angle firing into a three phase three wire wye or delta connected heater In this configuration the more common applications are transformer connected loads with heaters requiring a soft start and or current l
3. 1 El e T Heater l Mounted is Current is Transformer Shorted SSR Detector Temp L D C zi Control Open Collector toand 5VDC Contactor Relay Note Semiconductor power switching devices are not legal for over temperature limit or safety devices For limit and safety devices you must have a positive mechanical break of all electrically hot legs simultaneously 341 Power Switching Devices Solid State Relays Dimensions Heat Sink Dimensions Solid State Relay 8 32 1 75 in 019i 445mm Thread 48mm tiim 28 mm C 0 3 in C D IG 8 mm 1 7 in 1 875 in 43 mm 47 63 mm 2 25 in 57 2 mm Gy GY ANN SU p SNI 7 0 53 in i 0 172 in 13 5 mm 6 32 Thread Prilled ana pF 4 37 mm Dia L fin __ d 2 Places 25 mm Case Temp Ref Point 2 ILI IL IT t 0 12 in T 0 9 in 8 mm 0 77 in p mm t 9 6 mm Dimensions cee Part Number Descriptor in mm Z100 0815 000A 18A N A 1 8 46 3 25 82 6 3 7 94 N A 1 9 48 Z100 0815 000B 35A 1 91 48 5 3 2 81 3 25 82 6 3 7 94 1 81 46 29 74 Z100 0815 000C 55A 1 89 48 3 2 81 5 45 138 4 5 89 149 6 1 81 46 3 6 91 Z100 0815 XXFC 75A 1 89 48 3 2 81 5 45 138 4 7 16 181 9 1 81 46 3 6 91 Fan cooled
4. Ordering Information Part Number OLOJO CIE w D Control Voltage Current Voltage SSR A COTO Voltage Heat Sinks sold separately 100 2 0 to 100VDC 20A model only Z100 0815 000A 18A or 2 2 C watt 240 24 to 240VAC Z100 0815 000B 35A or 1 1 C watt 480 24 to 580VAC Z100 0815 000C 55A or 0 6 C watt F Z100 0815 12FC 75A or 0 16 C watt 120VAC fan CIO Current z 10 1 10A Z100 0815 24FC 75A or 0 16 C watt 240VAC fan 20 20A 100VDC model only Fast Cycle Input Card and Shorted SSR Alarm Card 25 25A For direct mounting on zero cross dc input solid state relay 40 40A RPC 5399 42 000 Fast cycle input card 4 to 20mA input 50 50A RPC 5386 0000 Shorted SSR alarm card ODLO Control Voltage Recommended and available with holders DC1 3 to 32VDC see specifications AC1 90 to 280VAC RND 3 to 32VDC 10 50 and 75A models only Note Relay will also include thermal foil two belville washers and 8 32 screws for mounting to a heat sink 342 M WATLOW
5. 122 mm 1 2 3 e AOO e i f LLL 4 Ground Lug Panel 2 8 Gauge 5 Opening tle AOO0 sl amp P e 2 5 45 in Outline E 138 mm PNG il Q 342i N 7 in 178 mm DIN EN 50022 s pi i i 9 35 by 7 5 mm Rail pul 87 mm i Clipping Distance e m a w 9 1 366 to 1 390 in t 1999 i 34 7 to 35 3 mm 1 89 in i e 48 mm Allowance for No 8 Fastener M4 0 4 in 10 mm Min Clearance for Air Flow Side Both Sides 4 in 102 mm Clearance for Air Flow and Wire Bending Radius 5 74 in 146 mm 4 in 102 mm 559i M2mm 0 Top 1 73 in ine 44 mm 2 26 in F 57 mm 2 25 in 5 5 89 in 3 1 5 17 in 150 mm n 131 mm l Bus Any Gauge 4 50 in 3 10 in 127 mm 114 mm 79 mm i 2 17 in 55 mm Rail Release Tal 1 2 Gauge pull down 4 in 102 mm min 4 in 102 mm Clearance for Air Flow and Wire Bending Radius Front Panel is Touch Safe No Clearance is Required Top 5 74 in mm peni Ground Wire Entry 3 25 in 83 mm Dimensions Fan Cooled DIN rail Panel Mount Side 4 in 102 mm Clearance for Air Flow and Wire Bending Radius 5 74 in 146 mm 4 in 102 mm 5 59 in 142 mm F F Lf 1 73 in 2 26 in 44 mm 6
6. 330 m X WATLOW Power Switching Devices QPAC Applications Sketch Wiring Example L1 Fuse L2 Fuse L3 Fuse Plug in Transformer Plug in Control Card Control Card Transformer Fan Must Be Wired to 120VAC Command Signal Q33 481 150 AFO In heat treating applications the QPAC offers modular flexibility Different heater elements require different control firing modes for example tungsten elements need Accessories phase angle firing while Nichrome elements use burst Manual Control Kit 08 5362 zero cross firing 150A 5A Current Transformer 16 0008 200A 5A Current Transformer 16 0045 Shipping the furnace to different countries could require different voltage sources and thus transformers i e U S 240 or 480 volt Australia 415 volt Europe 380 or 400 volt By simply changing plug in transformers the OEM can ship anywhere in the world 300A 5A Current Transformer 16 0073 400A 5A Current Transformer 0004 0286 0400 500A 5A Current Transformer 0004 0286 0500 600A 5A Current Transformer 0004 0286 0600 800A 5A Current Transformer 0004 0286 0800 1 000A 5A Current Transformer 0004 0288 1000 5A 20mA Interstage Transformer 16 0176 WATLOW uu 33 Power Switching Devices QPAC Ordering Information QPAC Mod
7. Phase angle fire control Phase angle control with soft start and current limiting e Plug in transformers 50 60Hz e 120 208 240 380 415 480 575VAC operation Power bases e phase Q01 1 pair of SCRs e 3 phase Q32 2 leg control 2 pair SCRs Resistive load only burst firing only e 3 phase Q33 3 pair hybrid SCRs diodes Recommended for phase angle only with balanced load Agency Approvals e UL 508 and C UL listed 150 to 300A all configurations File E73741 e UL 508 and C UL listed 400 to 1 000A on Q01 and Q32 up to 480VAC Control Card Inputs CD Solid state contactor dc input e On 4 32VDO off 0 5VDC e Built in noise reduction network BF Burst firing control fixed time base e Process input factory set 4 20mA DC e Input impedance 2500 clip resistor for 5kO impedance voltage input or manual control input e Time base 4 seconds clip resistor for 1 sec BV Burst firing control variable time base e Process input factory set 4 20mA DC e Input impedance 2500 clip resistor for 5KQ impedance voltage input or manual control input Requires an accessory bias and gain card to calibrate for O 5VDC input AF Phase angle control e Process input factory set 4 20mA DC e Input impedance 2500 clip resistor for 5KQ impedance voltage input or manual control input e Soft start approximately 6 seconds upon power up 1 second upon set point change WATLOW AL Phase angle control
8. 10 25A holder DFJ Combination Fuses and Holders Part Number 0808 0325 0020 Description 20A fuse 0808 0325 0030 30A fuse 0808 0326 1530 15 30A holder 310 m WATLOW ONG D O a 4D Cooling Line amp amp Current Load User Custom MS MTS Manual Options D A 1 0 Phase KD User Manual 1 1 phase 1 controlled leg English Cooling and Current Rating See rating curve 1 ome Natural convection current rating 18A 50 C E 3 French a Line and Load Voltage D 2 cenone 24 12015 240VAC EM Standard part XX Any letter or number custom options labeling etc Power Switching Devices DIN A MITE B The DIN A MITE B power controller provides a low cost highly compact and versatile solid state option for controlling electric heat This controller is designed and manufactured with the quality features expected from Watlow DIN rail and panel mounting are standard on every control There is no need to worry about mercury the DIN A MITE controller is mercury free Features include single phase and three phase zero cross switching up to 40 and 22 amperes respectively at 600VAC see rating curve A unique integrated design removes the guesswork associated with selecting a proper heat sink and adequate terminations for the application Variable time base 4 20mA process control and VAC VDC input contactor versions are available A shorted out
9. 2 Pozi driver Operating Environment See the output rating curve chart on next page O to 90 RH relative humidity non condensing Storage temperature 40 to 185 F 40 to 85 C Operating temperature 29 to 176 F 34 to 80 C Insulation tested to 3 000 meters DIN Rail Mount e DIN EN 50022 35 mm by 7 5 mm Back Panel Mount e Four mounting holes No 6 to No 8 M3 to M4 fastener Through Wall Mount e See page 317 for through wall panel cutout Note Mount cooling fins vertically Additional Specifications for Contactors and Proportional Controllers Control Mode Zero Cross e Control option C VDC input contactor output e Control option K VAC input contactor output e To increase service life on contactor models the cycle time should be less than three seconds e Control option F 4 to 20mA DC input variable time base control output WATLOW um 315 Power Switching Devices DIN A MITE C Specifications Continued Control Input e AC contactor 24VAC 10 120VAC 10 25 240VAC 10 25 25mA max per controlled leg e DC contactor 4 5 to 32VDC max current 4 5VDC is 6mA per leg add 2mA per LED used to the total current e oop powered linear current 4 to 20mA DC loop powered control option FO only no more than three inputs connected in series Additional Specifications for Phase Angle Phase Angle Current Limit and Single Cycle Variable Time Base Operation e
10. With control option S single cycle variable time base the output is not on for more than one consecutive AC cycle below 5096 power and not off for more than one consecutive AC cycle above 5096 power e Phase angle control single phase only Control Input e 0 to 20mA 4 to 20mA O to 5VDC 1 to 5VDC and O to 10VDC e Input impedance 2500 for 4mA to 20mA 5kO for linear voltage input Output Voltage e 100 to 120VAC 200 to 208VAC 230 to 240VAC 277VAC 400VAC 480VAC and 600VAC 10 Linearity Control Option S e 5 input to output power over O to 100 of span between calibration points Linearity Control Options P and L e 5 input to output power as referenced to a sinusoidal power curve between calibration points Resolution e Better than 0 1 of input span with respect to output change Soft Start Control Options P and L Typically e 5 seconds soft start on power up e Soft start on thermostat overtemperature e Soft start on 1 2 cycle drop out detection e 1 second soft start on set point change Options e Manual control kit 1kO potentiometer 08 5362 e Alarm option is not available on control options P or L Specifications are subject to change without notice Output Rating Curves DIN A MITE Style C Ratings at 100 On 3 Natural Convection LI L L LL jJ AAHH Max Internal Enclosure Ambient Temperature C 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Current Amperes
11. angle circuitry is transformer powered and accepts a linear voltage current or potentionmeter input 318 Single Cycle Variable Time Base Output Models DC__ __S 25 Power Output 1 AC cycle on 3 cycles off p 50 Power Output 1 AC cycle on 1 cycle off LUGD m ux m6 V With single cycle variable time base control at 50 percent power the output is on for one cycle and off for one cycle At 25 percent it is on for one cycle and off for three cycles Under 50 percent the output is not on for more than one consecutive cycle over 50 percent the output is not off for more than one consecutive cycle Semiconductor Fuses for Applications through 600VAC Fuse Part Number Fuse Rating Watlow Cooper Bussman FWP 40A14F 50A 17 8050 FWP 50A14F 63A 17 8063 FWP 63A22F 80A 17 8080 FWP 80A22F 100A 17 8100 FWP 100A22F Fuse Holder Part Number Fuse Rating Watlow Ferraz Shawmut 40A 17 5114 US144I 50A 17 5114 US144I 63A 17 5122 US221I 80A 17 5122 US221I 100A 17 5122 US221I Combined Branch Protection and Semiconductor Fuses for Applications through 480VAC Fuse Part Number Fuse Rating 125 of Load Cooper Bussman 20A 0808 0325 0020 DFJ 20 30A 0808 0325 0030 DFJ 30 40A 0808 0325 0040 DFJ 40 50A 0808 0325 0050 DFJ 50 63A 0808 0325 0060 DFJ 60 80A 0808 0325 0080 DFJ 80 100A 08
12. d da h ory Warning Thermocouples attached to terminals will be at load voltage i or 1 and 2 phase unit potential measurements need to be taken with isolated equipment or 25 ratings isolate the sensor from terminal with suitable insulation 5 10 15 20 25 30 35 Amperage Ordering Information Part Number Ig g D Command Number Load Signal Custom of Poles Voltage Voltage Options ES2 Number of Poles 1 1 pole 2 2 poles controlled 3 3 poles controlled ITO MAY fe e 3 1 z 100 to 120VAC 2 z 200to 240VAC 3 z 230 277VAC 400 480VAC with wye star neutral connected to center required Command Signal Voltage LV Low voltage 3 to 24VDC or 24VAC HV High voltage 100 to 240VAC 10 15 85 to 264VAC OR Custom Options 0002 Standard product Any three letters or numbers cosmetic options WATLOW uuu 335 Power Switching Devices SERIES CZR The SERIES CZR solid state relay provides a low cost highly compact and versatile solid state option for controlling electric heat With DIN rail and back panel mounting standard on every controller the CZR allows for simple and quick installation The extensive capabilities of the SERIES CZR include single phase 18 to 42 ampere zero cross switching up to 600VAC see output rating curve Its unique integrated design removes
13. designed to meet Asian and European requirements LED indicator light e Indicates command signal presence from controller e Assists in troubleshooting Agency approvals e UL recognition C UL and CE e WEEE compliant Power Switching Devices E SAFE Il Specifications Output voltage e 200 240VAC 10 15 50 60Hz 100 120VAC 10 15 50 60Hz Output amperage e Up to 35A single dual and three phase Operating environment e 32 to 158 F 0 to 70 C operating temperature e 0 to 90 RH relative humidity non condensing e Operational life four million switching cycles e Installation category Ill pollution degree 2 Control mode e NO ARC hybrid contactor Input command signal e 3 to 32VDC 24VAC 20 20 off state lt 2 7VDC e 100 to 240VAC 10 15 85 to 264VAC Note On the 100 to 240VAC input models do not use a RC snubber on the E SAFE II relay input or the temperature control command signal output LED indicator light e Built in LED assists in troubleshooting LED off indicates relay s are open LED on indicates relay s are closed Input command signal terminals e 1 4 in fast on appliance Line and load terminals e No 10 screw will accept ring or spade 1 4 in 6 35 mm x 10 32 Mounting e Back panel mount horizontal or vertical mounting options Dimensional Drawings 0 25 in
14. fans rated at 20 W each must be wired by customer Output Control Amps 150 150A 200 200A 300 300A 400 400A 500 SOOA 600 600A 800 800A O1k 1000A 332 m WATLOW Power Switching Devices E SAFE II The E SAFE II hybrid power switch provides reliable and accurate power switching up to 35 amperes at 158 F 70 C This mercury free product is specifically designed to operate in the higher ambient temperatures of foodservice applications Utilization of mercury relays is being eliminated due to many regulations affecting its use in the United States and around the world The E SAFE II is the best performing product at the most economical price Because of the product s unique design there is no need to purchase costly heat sinks used with traditional solid state relays SSRs In addition since this is a three phase device there is no need to wire multiple command signals With a switching life of millions of cycles and an ambient rating of 158 F 70 C with no heat sink required this product is superior to typical SSRs The E SAFE II hybrid power switch provides foodservice operators with longer contact life and higher performance than typical mechanical contactors used in equipment By using Watlow s patent NO ARC technology the E SAFE II can switch millions
15. into a Resistive Load DIN A MITE Style C Ratings at 100 On E a Max Internal Enclosure Ambient Temperature C 8888888888 m a UO TIT EPPTITTETTTTUFTPT TT TTET TITI TTTTTTT TITI 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Current Amperes into a Resistive Load DIN A MITE Style C Ratings at 100 On T T T T T T Recommended Max Enclosure Temperature is 176 F 80 C TITTTTTT LITT TET TTTT FTT FTT TTTT TTTT TETTTTTTT TTTT TTTT TTITT TTTT TTTT 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Current Amperes into a Resistive Load Ambient Air Around Heatsink Fins 6 a eo 316 mu X WATLOW Power Switching Devices DIN A MITE C Dimensions Natural Convection DIN rail Panel Mount Dimensions Natural Convection Through Wall Mount Front Front 1 51 in 38 k SEU MARIS ai Lin 35 mm Mistakes ioe 8 ea M5 0 8 x 10 mm 1 81 in 46 mm No 8 F M4 4 in 102 mm Min M5 Internal Tooth Lock Washers Included 2 11 in 54 mm _ ENT o 8 Fastener M4 Clearance for Air Flow Top and Bottom 4 81 in
16. package that can be quickly and easily mounted in a control cabinet Watlow s POWER SERIES controllers are UL9 and C UL listed ensuring that they meet world safety and operational standards WATLOW Features and Benefits 200KA short circuit current rating SCCR Minimizes damage in the event of a short circuit Microprocessor based technology e Extremely versatile and field configurable Snap fit on a pre mounted plate e Simplifies installation Models 65 through 250 amperes rating e Handles a wide range of loads UL 508 listed C UL and CE with filter Meets applications requiring agency approval Adjustable soft start e Provides application flexibility Heater and control diagnostics capability e Monitors actual heater and controller performance Electrically touch safe package e Enhances safety for installer and users Serial communications with Modbus RTU protocol e Provides computer control and or monitoring Multizone capability e Increases application flexibility and reduces panel space Power Switching Devices POWER SERIES Specifications Power Bases e Single phase 2 SCRs e 3 phase 2 leg control 4 SCRs Resistive load only zero cross firing only e 3 phase 3 leg control 6 SCRs e 3 phase 3 leg control 6 SCRs for 4 wire wye loads e Multizone two and three single phase zones Output Control Options e Zero cross control fixed time base e Time base one or four seconds with digital
17. programmer e Zero cross control variable tine base e Phase angle control and phase angle control with current limit not for 3 phase 2 leg models e Soft start factory default four seconds upon power up and adjustable from 0 0 to 120 seconds e Soft start upon input signal change output rate of change adjustable to limit max rate of change from 0 1 to 10096 per 0 1 second Factory default 10 e Current transformer included when required Line voltage compensated variable time base and phase angle controllers only e Standby or non operational mode Output Voltage and Current Rating e 24 to 120VAC 1096 15 e 200 to 480VAC 41096 1596 e 200 to 600VAC 41096 1596 e 65 through 250A per pole model dependent see Amperage Chart with Ordering Information Min load 1A rms ac Max leakage current 5mA e 200KA SCCR Type 2 approved with the recommended fusing see user manual Alarms e Single alarm relay Latching or non latching Separate high and low values Alarm silencing inhibit on power up for alarm Alarm indication LEDs shorted SCR open heater fuse e Electromechanical relay Form C contact software configurable Min load current 10mA 5VDC e Rated resistive loads 3A 250VAC or 30VDC max inductive load rating 1 5A with a power factor 2 0 4 without contact suppression Heater Bakeout e For single phase phase to neutral and 3 phase 6 SCR models only not for 3 phase 2 leg models e Soft start wi
18. should last for many years when properly protected with voltage snubbers mounted on appropriate heat sinks and when fused with semiconductor fuses against the high currents caused by electrical shorts Watlow s SSRs include an internal voltage snubber However if the unit fails the most probable condition will be a short Mechanical relays also have a good probability of failing short In all WATLOW cases where uncontrolled full power can cause damage it is recommended that a high limit temperature controller and contactor be used for protection Wiring Diagrams Single Phase Fast Cycle Input Card Temp Control gt 2 Input Card 4 20 mA VDC Output z DC SSR Heater Fuse L1 an ae D 2 3 L2 N Shorted SSR Alarm The most prevalent concern when using solid state relays is the possibility of a relay failing in a shorted condition With this in mind Watlow has designed a cost effective Shorted SSR Alarm The device monitors the output current through the heater and activates a triac alarm if there is no command signal from the temperature controller The triac can be wired to a bell or to a normally closed latching relay to remove power to the heater The shorted SSR alarm is not a substitute for an agency approved high temperature limit device Single Phase Shorted SSR Detector Thermocouple
19. 0 No alarm 2 3 phase 2 controlled legs S Shorted SCR alarm G S phase 3 controlled legs m User Mantel 8 2 independent zones control options C or K 9 3 independent zones control options C or K Bee English 1 German O Cooling and Current Rating See rating curve 2 Spanish O Natural convection 32 French 2 Line and Load Voltage ORD Custom Options 02 24 to 48VAC 00 Standard part 24 120 to 240VAC XX Any letter or number custom options labeling etc 60 277 to GOOVAC D Control C0 4 5 to 32VDC input contactor output FO 4 to 20mA DC input variable time base output K1 22 to 26VAC input contactor output K2 100 to 120VAC input contactor output K3 200 to 240VAC input contactor output Recommended DIN rail Mount Fuses and Fuse Holders Semiconductor Fuses and Holders Part Number Description 17 8020 20A fuse 17 8025 25A fuse 17 8030 32A fuse 17 8040 40A fuse 17 8050 50A fuse 17 5110 10 25A holder 17 5114 32 50A holder DFJ Combination Fuses and Holders Part Number Description 0808 0325 0020 20A fuse 0808 0325 0030 30A fuse 0808 0325 0040 40A fuse 0808 0325 0050 50A fuse 0808 0326 1530 15 30A holder 0808 0326 3560 35 60A holder WATLOW m 313 Power Switching Devices DIN A MITE C The DIN A MITE C silicon controlled rectifier SCR power controller provides a low cost comp
20. 08 0325 0100 DFJ 100 Fuse Holder Part Number Watiow Cooper Bussman Fuse Rating 20 and 30A 0808 0326 1530 CHS30Jli 40 to 63A 0808 0326 3560 CH60Jli 80 and 100A 0808 0326 7010 J601001CR WATLOW Power Switching Devices DIN A MITE C Ordering Information Part Number OO ORO Cooling Line amp amp Current Load Custom Rating Leg Voltage Control Options D C Phase CIO Control 1 1 phase 1 controlled leg ep 4 5 to 32VDC input contactor output 2 3 phase 2 controlled legs EOS 4 to 20mA DC input variable time base output 3 3 phase 3 controlled legs use with four wire wye K1 22 to 26VAC input contactor output 8 2 independent zones control options C K K2 100 to 120VAC input contactor output 9 3 independent zones control options C K K3 200 to 240VAC input contactor output L 0 to 5 2 Phase angle with current limiting single phase only P 0 to 5 2 Phase angle single phase only S 0 to 5 Single cycle variable time base output O Cooling and Current Rating Per Leg See chart below Natural convection standard DIN rail or panel heat sink 1 Fan cooled 120VAC standard DIN rail or panel heat sink 0 4 to 20mA input 2 Fan cooled 240VAC standard DIN rail or panel heat sink 1 12 to 20m input option S only 3 Fan cooled 24VDC standard DIN rail or panel heat sink 2 0 to 20mA inpu
21. 0A seconds 260A seconds 1 6204 seconds Thermal resistance 1 48 C W 1 05 C W 0 63 C W 1 48 C W 1 05 C W 0 31 CAN Ambient operating 40 to 176 F 40 to 176 F 40 to 176 F 40 to 176 F 40 to 176 F 40 to 176 F temperature 40 to 80 C 40 to 80 C 40 to 80 C 40 to 80 C 40 to 80 C 40 to 80 C Output Max Voltage range 48 280VAC 48 280VAC 48 280VAC 48 280VAC 48 280VAC 48 280VAC Over voltage rating 600V peak 600V peak 600V peak 600V peak 600V peak 600V peak Off state leakage 10mA 10mA 10mA 10mA 10mA 10mA 120 240VAC Random Fired Models Model Number Current output 75A 75A 75A 10A 20A Nominal voltage 120 240VAC 120 240VAC 480VAC 120 240VAC 100VDC One cycle surge current 1000A 1000A 1000A 120A 42A 10ms Max l t for fusing 6000A seconds 6000A seconds 1 620A2 seconds 6000A seconds 60A seconds N A Thermal resistance 0 31 C W 0 31 C W 0 63 CAN 0 31 CAN 1 48 CAN 1 06 C W Ambient operating 40 to 176 F 40 to 176 F 40 to 176 F 40 to 176 F 40 to 176 F 4 to 176 F temperature 40 to 80 C 40 to 80 C 40 to 80 C 40 to 80 C 40 to 80 C 20 to 80 C Output Max Voltage range 48 280VAC 48 280VAC 80 530VAC 80 530VAC 48 280VAC 0 100VDC Over voltage rating 600V peak 600V peak 1200V peak 1200V peak 600V peak N A Off state leakage 10mA 10mA 10mA 10mA 10mA 0 3mA VDC Model Number S
22. 6 120VAC 10 25 240VAC 10 25 25 mA max per controlled leg e DC Contactor 4 5 to 32VDC max current 4 5VDC is 8mA per leg e Linear current 4 to 20mA DC loop powered input Type FO option only no more than three DIN A MITE inputs connected in series Shorted SCR Alarm Option Alarm state when the input command signal off and a 15A or more load current is detected by the current transformer Alarm Output Energizes on alarm non latching e Triac 24 to 240VAC external supply with a current rating of 300mA Q 77 F 25 C Current Sensing e On board current transformer CT typically 0 2VAC output signal per ampere sensed into 1 0000 load WATLOW Agency Approvals CE with proper filter 204 108 EC Electromagnetic Compatibility Directive EN 61326 1 Industrial Immunity Class A Emissions Not suitable for Class B emissions environment 2006 95 EC Low Voltage Directive EN 50178 Safety Requirements e Mus UL 508 listed and C UL File E73741 Control Input Terminals e Compression will accept 26 to 12 AWG 0 13 to 3 3 mm wire Line and Load Terminals Compression will accept 6 to 2 AWG 13 3 to 33 6 mm wire Operating Environment Operating temperature range 4 to 176 F 20 to 80 C e 0 to 9096 RH relative humidity non condensing e Vibration 2 g 10Hz to 150HZz applied in any one of three axes e Storage temperature 40 to 185 F 40 to 85 C e Insulation tested to 3 000 meters e Insta
23. 7 mm 5 89 in 5 17 in s 150 mm 131 mm 5in 7 64 in 127 mm 3 10 in 194 mm 79 mm L4 i LR Rail Release Tab pull down i Front Panel is Touch Safe No Clearance is Required 4 in 102 mm min 4 in 102 mm Clearance for Air Flow and Wire Bending Radius L WATLOW Sheet Metal 12 GA Front Panel is Touch Safe No Clearance is Required Panel Cutout Drill 0 228 in 5 8 mm 8 P Heat Sink Outline T I Panel Opening ane 0 375 in 9 5 mm Reference 0 428 in 10 8 mm j 1 1 1 625 in l 41 3 mm 6 375 in L gt 161 9 mm 1 4 625 in 117 5 mm ES Lb 5 850 in 148 6 mm i 1 a a 4 0 338 in 8 6 mm Reference 0 275 in 7 0 mm L 1 034 in 26 3 mm 3 103 in 78 8 mm 3 862 in 98 1 mm 4 137 in 105 1 mm With the potential for high through wall heat sink temperatures application may require a touch safe shield Power Switching Devices DIN A MITE C Extended Heater and Power Controller Life with Variable Time Base With variable time base control the power controller automatically adjusts the time base and output power with respect to the command signal Accelerated life testing shows that variable time base control significantly reduces expansion and contraction of the heater element This extends heater and power controller life while improving process temperature control This saves mo
24. 80VAC CE EN60950 Meets applications requiring agency approval Power Switching Devices Solid State Relays Specifications Ambient Temperature Operating Curve 85 __ Dielectric Strength Volts 4000 RMS Lo Input DC Control ge 74 Voltage range 3 32VDC n Typical input current 3 4 to 20mA E Turn on voltage max 3VDC 32 kn SSR XXX 75A XXX and Turn off voltage min 1VDC F 5 60 H ELD nS ATS Hegtalnk Input AC Control BP os g Voltage range 90 280VAC As amp El Typical input current 2mA typical 120VAC 22 0 E E 4mA typical 240VAC sia 8 NH Al Turn on voltage max 90VAC Es e 3 3 2 Es Turn off voltage min 10VAC 7 8 8 8 S AC Output Max 35 L 3 8 f Forward voltage drop 1 5VAC and 2 1VDC 39 1 f z in holding current mA 50mA g g 8 E Turn on off time ms up to 10ms max i H 10 P 20 25 PA a E di d 75 Frequency range 47 to 63Hz Load Gurrani Anares 120 240VAC Model Number SSR 240 10A DC1 SSR 240 25A DC1 SSR 240 50A DC1 SSR 240 10A AC1 SSR 240 25A AC1 SSR 240 50A AC1 Current output 10A 25A 50A 10A 25A 50A Nominal voltage 120 240VAC 120 240VAC 120 240VAC 120 240VAC 120 240VAC 120 240VAC One cycle surge current 120A 250A 625A 120A 250A 625A Max l t for fusing 60 seconds 260A seconds 1 6204 seconds 6
25. Power Switching Devices EZ ZONE ST 75A Zero Cross 1 UL CSA CE SCCR Phase Angle RoHS W E E E DIN A MITE A 25A Zero Cross 1 UL C UL CE SCCR DIN A MITE B 40A Zero Cross 1 UL C UL CE SCCR DIN A MITE C 80A Zero Cross 10r3 UL C UL CE SCCR Phase Angle DIN A MITE D 100A Zero Cross 1 UL C UL CE SCCR POWER SERIES 250A Zero Cross tors UL C UL CE SCCR Phase Angle QPAC 1000A Zero Cross tors UL C UL SCCR Phase Angle E SAFE II 35A Zero Cross 1 20r3 UL C UL CE W E E E SERIES CZR 42A Zero Cross 1 UL CSA CE Solid State Relays 75A Zero Cross 1 UL CSA SSR Note The specifications in the table above are best available values in each category Not all combinations of these values are available in a single model number w WATLOW rol Solid State Power Cont D eE WATLOW 305 Power Switching Devices Comparison Guide Initial Cost 3 Year Cost Control Heater EMI Response Life Life Generation Control Rate Comments Electromechanical Relay and Contactor Low for low Highest Limited Shortest Yes coil Poor Slowest None To extend life the cycle current electrical and and contacts time is normally extended mechanical to 30 seconds or more Hybrid Power Switch Low Medium High Good Minimal Good Fast None Such as Watlow E SAFE II a
26. R Type 1 and 2 approved with the recommended fusing see user manual Line Voltage e 24 to 660VAC model number dependent see ordering information Control Mode Zero Cross e Control option C VDC input contactor output e Control option K VAC input contactor output e To increase service life on contactor models the cycle time should be less than three seconds e Control option F 4 to 20mA DC input variable time base control output Control Input e AC contactor 24VAC 10 120VAC 10 25 240VAC 10 25 25mA max per controlled leg e DC contactor 4 5 to 32VDC max current 4 5VDC is 6mA per leg Add 2mA per LED used to the total current e Linear current 4 to 20mA DC loop powered control option FO only requires current source with 6 2VDC available no more than three DIN A MITE inputs connected in series Alarm Shorted SCR Alarm Option e Alarm state when the input command signal off and a 10A or more load current is detected by the current transformer two turns required for 5A and three turns for 2 5A Alarm Output e Energizes on alarm non latching e Triac 24 to 240VAC external supply with a current rating of 300mA 77 F 25 C 200mA Q 122 F 50 C 100mA Q 176 F 80 C and a holding current of 200 uA with a latching current of 5mA typical Agency Approvals CE with proper filter 204 108 EC Electromagnetic Compatibility Directive EN 61326 1 Industrial Immunity Class A Emissions 2006 95 EC Low Voltage Direct
27. SR 480 25A DC1 SSR 480 50A DC1 SSR 480 75A DC1 SSR 480 25A AC1 SSR 480 50A AC1 SSR 480 75A AC1 Current output 25A 50A 75A 25A 50A 75A Nominal voltage 480VAC 480VAC 480VAC 480VAC 480VAC 480VAC One cycle surge current 250A 625A 1000A 250A 625A 1000A Max l t for fusing 260A seconds 1 6204 seconds 6 000A seconds 260A seconds 1 620A2 seconds 6 000A seconds Thermal resistance 1 02 C W 0 63 C W 0 31 C W 1 02 C W 0 63 C W 0 31 C W Ambient operating 40 to 176 F 40 to 176 F 40 to 176 F 40 to 176 F 40 to 176 F 40 to 176 F temperature 40 to 80 C 40 to 80 C 40 to 80 C 40 to 80 C 40 to 80 C 40 to 80 C Output Max Voltage range 48 530VAC 48 530VAC 48 530VAC 48 530VAC 48 530VAC 48 530VAC Over voltage rating 1200V peak 1200V peak 1200V peak 1200V peak 1200V peak 1200V peak Off state leakage 10mA 10mA 10mA 10mA 10mA 10mA 340 mu WATLOW Power Switching Devices Solid State Relays Heater Life Watlow has extensively tested electric heating elements with a variety of power switching devices Results prove that the life of an electric element dramatically increases when the on off cycle time that is used to time proportion the heater is kept at less than one second This reduces the thermal expansion and contraction of the element and improves heater life as much as 20 times This very fast cycle time cont
28. Switching Devices QPAC Specifications Continued Operating Environment e 32 to 122 F 0 to 50 C e O to 9096 RH non condensing e 2 000 meters altitude Storage Temperature e 40 to 185 F 40 to 85 C Options e Manual Control Kit for process input cards KQ potentiometer 4408 5362 e 240VAC and 120VAC cooling fans QPAC Weight Chart 150 15 68 36 163 50 22 7 200 15 6 8 36 16 3 50 22 7 300 15 68 36 16 3 50 22 7 400 600 44 20 0 85 88 5 100 45 4 800 1000 49 222 120 544 185 61 2 Case Styles Style C QPAC Dimensions Depth z ip com Style E Height Width W Depth D in mm C 150 13 330 6 9 175 10 25 260 C 200 13 330 6 9 175 10 25 260 C 300 13 330 6 9 175 10 25 260 E 400 600 27 685 17 430 11 7 300 E 800 1K 27 685 17 430 18 3 340 Depth D in mm C 18 330 13 7 850 10 25 260 C 200 13 330 13 7 850 10 25 260 C 300 13 330 13 7 850 10 25 260 E 400 600 27 685 21 685 11 7 300 E 800 1K 33 840 21 635 13 3 840 Depth D in mm C 150 13 330 20 7 525 10 25 260 C 200 13 330 20 7 525 10 25 260 C 300 13 330 20 7 525 10 25 260 E 400 600 33 840 27 685 11 7 300 E 800 1K 83 840 27 685 13 3 340
29. act and versatile solid state option for controlling electric heat This controller is designed and manufactured with the quality features expected from Watlow DIN rail panel mount and through wall mount versions are available Features include single phase three phase two leg and three phase three leg 24 600VAC operation Current Switching capabilities range from 30 to 80A depending on the model ordered Variable time base linear voltage and current process control or VAC VDC input contactor versions are available Single phase phase angle firing and current limiting are also available All options are model number dependent and factory configurable This power controller includes 200KA short circuit current rating SCCR tested up to 480VAC to minimize damage in the event of a short circuit when used with required fusing Features and Benefits 200KA SCCR with proper fusing e Minimizes damage in the event of a short circuit DIN rail panel and thru wall mounting e Provides versatility and quick low cost installation Compact size e Reduces panel space and cost Touch safe terminals e Increases safety for installer and user One and three phase power e Can be used in a variety of applications Open heater shorted output alarm e Notifies the user in case of an open heater or shorted output Mercury free e Assures environmental safety Faster switching with solid state e Saves energy and extends heater life UL 508 li
30. ating Environment e 122 F 50 C base rating e 32 to 140 F 0 to 60 C fan cooled e 32 to 149 F 0 to 65 C natural convection cooled e O to 90 RH non condensing e Meets EN50178 Pollution degree three Storage Temperature e 40 to 185 F 40 to 85 C Shipping Weight e Output Amperage Rating F35 38 lbs 17 2 kg e Other Output Amperage Ratings 23 lbs 10 3 kg Agency Approvals e UL 508 listed File 273741 Vol 3 Sec 2 e C UL listed to C22 2 NO 14 e CE 2004 08 EC EN61326 1 Class A with filter CE 2006 95 EC EN50178 WATLOW Dimensions Output Amperage Ratings N20 N25 N30 F20 F25 or F30 Front View POWER SERIES Solid State Power Controller 14 in 354 mm Y Top View Power Series Top View h 7 9 in 200 mm Mounting Plate Release Tab MM m Mounting Holes 4 NN e Vit l Key Slots o ZA 00 in denn N I Q m i 1 53 in 39 mm Ug 4in 0 97 in 102 mm 25 mm 5 93 in 151 mm 325 Power Switching Devices POWER SERIES 13 3 in
31. ctor Fuse Cooper Bussmann Part Number 170N3437 Watlow Part Number 0808 0096 0000 Phase Current Sensing or Alarm 1 1 phase 1 controlled leg O No alarm P 7 1 Load current transformer C Cooling and Current Rating See rating curve S Shorted SCR alarm User Manual 0 English 1 German 2 Spanish 32 French ORG Custom Options 00 Standard part Power Switching Devices POWER SERIES Watlow has manufactured solid state power controllers for over forty years Watlow s POWER SERIES is a microprocessor based product that features application flexibility unmatched by any other silicon controlled rectifier SCR power controller on the market today Watlow s POWER SERIES controllers include single and three phase models from 65 to 250 amperes Field configurable phase angle or zero cross firing improves application flexibility on site where needed 50 60Hz independent operation allows utilization almost everywhere in the world without special calibration considerations Serial communication via Modbus RTU allows setup and monitoring of load status from a computer station or control room On board semiconductor fusing improves reliability by protecting the SCRs from heater short circuits Plus on board heater bakeout and control diagnostics can help eliminate initial start up problems All these benefits are in a touch safe
32. d e Modbus RTU protocol e 1200 2400 4800 9600 19200 baud rates Controller Power Supply e Universal line voltage input range 100 to 240VAC 10 15 at 55VA max e 50 60Hz 5 line frequency independent e Controller line voltage for electronic power supply can be run on separate line voltage 324 m A X WATLOW Power Switching Devices POWER SERIES Specifications Continued Natural Convection and Fan Cooled Models e Cabinet venting may be required e See Amperage Chart with Ordering Information for available configurations Power Dissipation Watts e Approximately 1 25 watts ampere per controlled leg Isolation e Command signal to load and line load to ground 2200VAC min e On board semiconductor fuses provide SCR protection Mounting e Output Amperage Rating F35 back panel e Other Output Amperage Ratings removable mounting plate High Current Terminals e Touch safe e 3 gin 10 mm Allen head compression terminals will accept 6 AWG to 350 MOM wire Allen wrench adapter included for 3 8 in 10 mm socket 6 point only e Torque to 180 in Ibs 20 3 Nm e Wire strip to 11 8 in GO mm e Requires 194 F 90 C wire insulation rating on line and load terminals Controller Terminals e Touch safe e 1 g in 2 5 mm blade screwdriver accepts 12 22 AWG or 2 ea 22 18 AWG wires e Torque to 8 in Ibs 0 9 Nm e Wire strip to 0 24 in 6 mm Oper
33. e e Reduces panel space and cost Touch safe terminals e Increases safety for installer and user Mercury free e Assures environmental safety Faster switching with solid state e Saves energy and extends heater life UL 508 listed C UL and CE with filter e Meets applications requiring agency approval Back to back SCR design e Ensures a rugged design On board semiconductor fusing e Provides quick access with no extra mounting necessary 320 m 7 WATLOW Power Switching Devices DIN A MITE D Specifications Amperage e See the Output Rating Curve below e Max surge current for 16 6ms 1 800A peak e Latching current 500mA min e Holding current 200mA min Power dissipation is 1 4 watts per ampere switched including on board fusing e 200KA SCCR Type 1 and 2 approved with the recommended fusing see user manual Line Voltage e 24 to 48VAC units 20VAC min to 53VAC max e 100 to 240VAC units 48VAC min to 265VAC max e 277 to 480VAC units 85VAC min to 528VAC max e 277 to 600VAC units 85VAC min to BBOVAC max e 50 60Hz independent 5 Control Mode Zero Cross e Control option C VDC input contactor output e Control option K VAC input contactor output To increase service life the cycle time should be less than three seconds e Control option F 4 to 20mA DC input variable time base control output Control Input AC contactor 24VAC x109
34. e complete and professionally engineered product Because the system is modular and scalable a user only pays for what is needed Stacking the EZ ZONE ST integrated controller into multiple configurations enables flexibility to standardize the product platform to solve a wide range of application needs This integrated controller also includes 200KA short circuit current rating SCCR tested up to 480VAC to minimize damage in the event of a short circuit when used with required fusing Features and Benefits Back panel or DIN rail mount e Provides several mounting options Compact package e Reduces panel size Touch safe package e Complies with IP2X increasing user safety 0 1 percent temperature accuracy e Provides efficient and accurate temperature control 200KA SCCR with proper fusing e Minimizes damage in the event of a short circuit Agency approvals UL CSA CE RoHS W E E E e Meets applications requiring agency approvals Three year warranty e Ensures Watlow s reliability and product support Off the shelf designed system solution e Improves system reliability and termination reduction e Reduces installation cost e Eliminates incompatibility headaches often encountered with using many different components and brands Profile capability e Includes ramp and soak with four files and 40 total steps Ability to communicate with programmable logic controller PLC personal computer PC or operator interface ter
35. hase see the output rating curve e Max l t for fusing 4000A sec e atching current 200mA min e Holding current 100mA min Power dissipation is 1 2 watts per ampere switched e 200KA SCCR Type 1 and 2 approved with the recommended fusing see user manual Line Voltage e 24 to 660VAC model number dependent see ordering information e Off state leakage 1mA at 77 F 25 C max e 50 60Hz independent Control Mode Zero Cross e Control option C VDC input contactor output e Control option K VAC input contactor output e To increase service life on contactor models the cycle time should be less than three seconds e Control option F 4 to 20mA DC input variable time base control output 3 cycles on 3 cycles off at 5096 power Control Input AC contactor 24VAC 10 120VAC 10 25 240VAC 10 25 25mA max e DC Contactor 4 5 to 32VDC max current 4 5 VDC is 8mA Loop powered linear current 4 to 20mA DC loop powered control option FO only requires current source with 6 2VDC available no more than three DIN A MITE inputs can be connected in series Agency Approvals e CE with proper filter 204 108 EC Electromagnetic Compatibility Directive EN 61326 1 Industrial Immunity Class A Emissions 2006 95 EC Low Voltage Directive EN 50178 Safety Requirements Installation category Ill pollution degree 2 e Gs UL 508 listed and C UL File 73741 WATLOW Control Input Terminals e Compression wil
36. imiting The three phase four wire configuration is intended for zero cross firing into a three phase grounded wye star heater This is a separate hardware option model number dependent 33 mm Single Phase Multizone Configuration This configuration is available in two and three single phase zones and all the features of a single phase unit are available Note that there is only one alarm relay and all zones in the controller must use the same control method Heater Diagnostics Heater diagnostics may include some or all of the features that require heater current monitoring depending on the model selected Heater current monitoring is only available with heater diagnostics installed on the controller The features dependent on heater current monitoring are heater bakeout current limiting heater kVA monitoring retransmit and heater monitoring alarms Such as open heater heater out of tolerance load balance and shorted SCR detection error Heater diagnostics must also be installed if you need phase angle control with current limit 320 m AX X WATLOW Power Switching Devices POWER SERIES Ordering Information Part Number O OFORO Output Heater Feedback Diagnostics Retransmit PC Phase Output Voltage Rating 1 1 phase A 24 to 120V 2 3 phase 2 leg con
37. ive EN 50178 Safety Requirements Installation category Ill pollution degree 2 e s UL 508 listed and C UL File E73741 Control Input Terminals e Compression will accept 24 to 16 AWG 0 2 to 1 5 mm wire Line and Load Terminals e Compression will accept 18 to 8 AWG 0 8 to 8 4 mm wire Operating Environment See the output rating curve O to 9096 RH relative humidity non condensing Storage temperature 40 to 185 F 40 to 85 C Operating temperature 4 to 176 F 20 to 80 C Insulation tested to 3 000 meters DIN rail Mount e DIN EN 50022 35 mm by 7 5 mm Back Panel Mount e Four mounting holes No 6 to No 8 M3 to M4 fastener Dimensions e 3 7 in 94 mm high x 3 3 in 83 mm wide x 4 9 in 124 mm deep Weight 1 5 Ib 0 68kg Specifications are subject to change without notice Output Rating Curve DIN A MITE Style B Ratings at 100 On Natural Convection Current Rating Table Cooling Current sas amp 8 8888888 INTAN AT hI HANH 0 5 10 15 20 25 30 35 40 45 50 55 60 Current Amperes into a Resistive Load Max Internal Enclosure Ambient Temperature C MN a 312 es WATLOW Power Switching Devices DIN A MITE B Ordering Information Part Number OJO OO Cooling Line amp Load Voltage Control ONE E User Custom Manual Options Alarm 1 1 phase 1 controlled leg
38. l accept 24 to 16 AWG 0 2 to 1 5 mm wire Line and Load Terminals e Compression will accept 18 to 8 AWG 0 8 to 8 4 mm2 wire Operating Environment e 4 to 176 F 20 to 80 C see the output rating curve chart for your application e O to 90 RH relative humidity non condensing e Insulation tested to 3 000 meters e Units are suitable for Pollution degree 2 Mounting Options include DIN rail or standard back panel mounting e DIN EN 50022 35 mm by 7 5 mm Mount cooling fins vertically Dimensions e 3 7 in 94 mm high x 2 0 in 50 mm wide x 3 9 in 98 mm deep Weight 0 71 Ib 0 32kg Specifications are subject to change without notice Output Rating Curve DIN A MITE Style A Ratings at 100 On 30 Current Amperes into a Resistive Load a 25 30 35 40 45 50 55 60 65 70 75 80 85 Max Internal Enclosure Ambient Temperature C Power Switching DIN A MITE A Ordering Information Part Number Devices 277 to 600VAC CIO Control C0 4 5 to 32VDC input contactor output FO 4 to 20mA DC input variable time base output K1 22 to 26VAC input contactor output K2 100 to 120VAC input contactor output K3 200 to 240VAC input contactor output Recommended Fuses and Fuse Holders Semiconductor Fuses and Holders Part Number Description 17 8025 25A fuse 17 5110
39. llation Category Ill pollution degree 2 Mounting e Back panel mounting fits the same mounting pattern as a 100A single phase mercury displacement relay e On board semiconductor fusing Dimensions e 7 3 in 185 mm high x 2 6 in 66 mm wide x 9 4 in 239 mm deep Weight 6 5 Ib 2 95kg Specifications are subject to change without notice Output Rating Curve DIN A MITE Style D Natural Convection Ratings at 100 On 8 8 N a EI eo Max Internal Enclosure Ambient Temperature C 8888888 nN a THT TITTY TTT TITT TTTT TTTT 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100105 Current Amperes Into a Resistive Load Power Switching Devices DIN A MITE D Ordering Information Part Number ONG Cooling Line amp amp Current Load MSIE Me DA Current Sensing User or Alarm Manual Custom Options O Natural convection ONG Line and Load Voltage 24 to 48VAC 025 24 120 to 240VAC 48 277 to 480VAC 60 277 to 600VAC EO Control C0 4 5 to 32VDC input contactor output FO 4 to 20mA DC input variable time base output K1 22 to 26VAC input contactor output K2 100 to 120VAC input contactor output K3 200 to 240VAC input contactor output Replacement Semicondu
40. minal OIT e Optional EIA 485 Modbus9 RTU e RUl communications gateway with optional EIA 232 485 Modbus RTU EtherNet IP TCP Modbus DeviceNet or PROFIBUS DP Refer to page 351 for further information Solid state relay output e Allows faster cycling more precise control increased heater life and improves energy efficiency e Ability to handle up to 75 amperes e Uses either zero cross or phase angle control modes for flexibility to control resistive loads such as nichrome tungsten or quartz lamps e Utilizes phase angle control mode to prevent load failure or blowing fuses for tungsten or quartz loads PID temperature control e Allows single input dual output e Allows standard PID or adaptive TRU TUNE tuning algorithms for demanding controllability requirements Optional temperature limit e Increases safety in over and under temperature condition Optional definite purpose mechanical contactor e Enables circuit safety shut down driven by limit control or PID alarm output signal For detailed product and ordering information see the full EZ ZONE ST product section located on pages 227 through 233 WATLOW 307 Power Switching Devices DIN A MITE A The DIN A MITE A power controller provides a low cost highly compact and versatile solid state option for controlling electric heat This controller is designed and manufactured with the quality features expected from Watlow DIN rail and panel
41. mm Mount cooling fins vertical Weight Dimensions e 9 2 oz 260g e 24 to 42A models 3 95 in 100 mm high x 1 75 in 45 mm wide x 4 3 in 109 mm deep e 18A models 3 95 in 100 mm high x 0 89 in 22 6 mm wide x 3 9 in 99 mm deep Power Switching Devices SERIES CZR Ordering Information Part Number GNO OOD Control Mode Output Voltage Input Type Contactor Control Mode Z Zero cross ONO Output Amperage 18 18A 24 24A 34 34A 42 42A ORO Output Voltage 24 24 to 280VAC 48 48 to 580VAC 60 60 to 660VAC OKOLO Input Type Contactor DC1 4 to 32VDC AC1 90 to 140VAC Note Do not use the AC1 input type with temperature controller outputs that include an AC snubber filter This could cause the SERIES CZR to stay full on Output Rating Curve Maximum Ambient Temperature F on 68 86 104 122 140 158 176 Current Amps 10 20 30 40 50 60 70 80 Maximum Ambient Temperature C 338 WATLOW Power Switching Devices Solid State Relays SSR Watlow solid state relays SSR offer many of the advantages of solid state power controllers yet at a lower cost Watlow s extensive knowledge in power controller design has led to the development of a special fast cycle input card that enables a SSH to operate from a standard 4 20mA instrumentation command signal Test results have sho
42. mounting is standard on every controller There is no need to worry about mercury the DIN A MITE controller is mercury free Features include single phase zero cross switching up to 25 amperes at 600VAC see rating curve A unique integrated design removes the guesswork associated with selecting a proper heat sink and adequate terminations for the application Variable time base 4 20mA process control and VAC VDC input contactor versions are available All options are model number dependent and factory configurable This power controller also includes 200KA short circuit current rating GCCR tested up to 480VAC to minimize damage in the event of a short circuit when used with required fusing Features and Benefits 200KA SCCR with proper fusing e Minimizes damage in the event of a short circuit DIN rail and panel mounting e Provides versatility and quick low cost installation Compact size e Reduces panel space and cost Touch safe terminals e Increases safety for installer and user Mercury free e Assures environmental safety Faster switching with solid state e Saves energy and extends heater life UL 508 listed C UL and CE with filter e Meets applications requiring agency approval Back to back SCR design e Ensures a rugged design 308 Tt WATLOW Power Switching Devices DIN A MITE A Specifications Operator Interface e Control input e Input indication LED Amperage e Single p
43. n Heater Alarm Option Control Option S only Alarm state when the input command signal is on and the load current detected by the current transformer is 2096 less than customer adjusted set point Alarm Output Energizes on alarm non latching e Triac 24 to 240VAC external supply with a current rating of 300mA Q 77 F 25 C 200mA 122 F 50 C 100mA Q 176 F 80 C and a holding current of 200pA with a latching current of 5mA typical Agency Approvals e CE with proper filter 204 108 EC electromagnetic compatibility directive EN 61326 1 industrial immunity Class A emissions not suitable for Class B environments Phase angle and phase angle with current limit control options P and L are not CE approved for conducted or radiated emissions 2006 95 EC low voltage directive EN 50178 safety requirements installation category Ill pollution degree 2 e UL9 50 Type 4X enclosure Class 1 Div 2 per ANSI ISA 12 12 01 Through wall heat sink models T4 File 184390 e UL 508 listed and C UL File E73741 e Shock and vibration tested to IEC 60068 2 32 e Vibration tested to IEC 60068 2 6 Control Input Terminals e Compression will accept 24 to 16 AWG 0 2 to 1 5 mm wire e Torque to 4 4 in Ib 0 5 Nm max with a 1 8 in 8 5 mm blade screwdriver Line and Load Terminals e Compression will accept 14 to 4 AWG 2 to 21 mm wire e Torque to 24 in Ib 2 7 Nm max with a 1 4 in 6 4 mm blade screwdriver or a type 1A
44. nd NO ARC relays Mercury Displacement Relay MDR Low for Medium High Good Yes coil Fair to Medium None Mercury is not desirable low to and contact good to fast Minimum cycle time is medium two seconds Position current sensitive Solid State Relay SSR Fixed Time Base Medium Medium Extended Extended Minimal Good Fast None Excellent control with one Second cycle time Requires heatsink Silicon Controlled Rectifier SCR Fixed Time Base Medium Low Extended Extended Minimal Good Fast None Excellent control with one second cycle time SCR Burst Firing High Low Extended Longest Minimal Excellent Fastest None Fastest variable time base unit SCR Phase Angle Firing High Low Extended Longest High Excellent Fastest Current Required for tungsten limit elements transformers or for current limiting Saturable Core Reactor Highest Low Extended Longest Minimal Very Fast Current Cannot be turned full on good limit or off inefficient Includes heater replacement and lost production 306 Tt WATLOW Power Switching Devices EZ ZONE ST The EZ ZONE ST integrated solid state controller from Watlow offers a complete thermal system control solution in a single package Features include a PID temperature controller connected to a high amperage solid state relay with the option of adding a properly sized heat sink an over and under temperature limit a Power shut down contactor and digital communications in on
45. ney on heaters downtime and maintenance Loop Powered or Transformer Powered Loop Powered By using a temperature controller s 4 20mA process output signal as the power supply for the DIN A MITE input the cost of the power controller can be reduced With control option FO the 4 20mA control signal simultaneously powers the DIN A MITE s internal electronics and provides the input command signal Transformer Powered DIN A MITE controllers with single cycle variable time base or phase angle outputs control options L P and S detect the power line zero cross with a transformer that also powers their internal electronics These units can be controlled manually with a potentiometer or automatically with a temperature controller using any of the control options 4 20mA linear voltage 0 5 1 5 and 0 10VDC Loop Powered Variable Time Base Output Models DO FO0 20 Power Output 3 AC cycles on 12 cycles off AA AM VV VIV 50 Power Output 3 AC cycles on 3 cycles off ANN ANN AAN AAA ANA VVV VUV VVV VV VVV 80 Power Output 12 AC cycles on 3 cycles off AMAAAAAAAAAAA AAMAAAAAAAAA VVVVVVVUVVNVV VVVVVVVVVVVV With loop powered variable time base control the minimum on or off time is three cycles Phase Angle Output Models DC1 LP 0 Phase angle control control options L and P is infinitely variable over the period of the AC sine wave It provides a variable voltage and or current output The phase
46. ntroller provides an inexpensive versatile product for controlling heat in an efficient package This controller is designed and manufactured with the quality features expected from Watlow The mounting footprint matches that of the industry standard mercury displacement relay MDR but there is no need to worry about mercury the DIN A MITE controller is mercury free The DIN A MITE Style D is capable of zero cross Switching up to 100 amperes single phase at 600VAC at 86 F 30 C depending on the model selected Combining the input of two or three controllers allows control of three phase loads The controller is completely touch safe and includes on board front accessible semiconductor fuses Options include a current transformer for load current monitoring and a shorted output alarm The controller is UL 508 C UL and CE approved making it ideal for panels and cabinets that require agency approvals Variable time base 4 20mA process control and VAC VDC input contactor options are available All options are model number dependent and factory configurable This power controller also includes 200KA Short circuit current rating GCCR tested up to 480VAC to minimize damage in the event of a short circuit when used with required fusing Features and Benefits 200KA SCCR with proper fusing Minimizes damage in the event of a short circuit Standard panel mount e Provides same mount as industry standard 100A MDR Compact siz
47. o cross or phase angle models are available with a wide variety of options This power controller includes 200KA short circuit current rating GCCR and high speed fuses to minimize damage in the event of a short circuit Features and Benefits 200KA short circuit current rating SCCR Minimizes damage in the event of a short circuit Modular power controller e Unit base can be fitted with a variety of plug in transformers and control cards Available in 150 to 1000 ampere ratings e Handles large or small loads Available in solid state contactor burst firing zero cross or phase angle fired mode e Meets most application requirements Rugged design for 122 F 50 C ambient operation e Full rating of the power controller can be used in industrial applications Semiconductor fuses and snubber protection included e Protects the SCR from voltage or current surges or spikes Open heater or shorted SCR detector option e Diagnostic capabilities UL 508 listed and C UL up to 1000 amperes e For applications requiring agency approvals Typical Applications Furnaces and ovens Petrochemical Heat treating Duct heating Environmental chambers Kilns 328 mu WATLOW Power Switching Devices QPAC Specifications Operation Modular controller base with plug in card and transformer e Plug in control cards Solid state contactor dc input Burst fire control fixed or variable time base
48. of cycles to increase the life of the product with reduced noise and increased temperature accuracy E SAFE Il s inherent ability to operate at fast cycle times makes it an ideal complementary product for a time proportional integral derivative PID controller E SAFE Il is mercury free RoHS compliant by design CE approved and C UL UL recognized The reliability of the product is protected by a two year warranty WATLOW Features and Benefits Mercury free e Improves safety by eliminating risk of toxic metals in proximity to food e Adheres to federal and state regulations phasing out and banning mercury High ambient temperature rating of 158 F 70 C e Specifically designed to operate in the higher ambient temperatures of foodservice applications NO ARC hybrid power switch technology e Combines the current carrying capacity of mechanical contacts with the longevity of solid state technology e Allows faster cycling times than mechanical contactors e Delivers more precise temperature control saves energy extends heater life and decreases total cost of ownership Compact and touch safe package e Fits in shallow foodservice cabinets Allows for horizontal or vertical mounting installations e Increases safety for installer operator Uses Ultem enclosure material with a horizontal burn rating HB rating of 338 F 170 C and a UL flame retardant rating of 94 5VA RoHS compliant by design e Specifically
49. put alarm option is also available All options are model number dependent and factory configurable This power controller includes 200KA short circuit current rating SCCR tested up to 480VAC to minimize damage in the event of a short circuit when used with required fusing WATLOW Features and Benefits 200KA SCCR with proper fusing e Minimizes damage in the event of a short circuit DIN rail and panel mounting e Provides versatility and quick low cost installation Compact size e Reduces panel space and cost Touch safe terminals e Increases safety for installer and user Single and three phase power e Permits use in a variety of applications Mercury free e Assures environmental safety Faster switching with solid state e Saves energy and extends heater life UL 508 listed C UL and CE with filter e Meets applications requiring agency approval Back to back SCR design e Ensures a rugged design Shorted output alarm optional e Simplifies troubleshooting and reduces downtime Power Switching Devices DIN A MITE B Specifications Operator Interface e Control input and indication light e Alarm output and indication light Amperage Rating See the output rating curve Max surge current for 16 6ms 380A peak Max t for fusing is 4 000A2s Latching current 200mA min Holding current 100mA min Off state leakage 1mA at 77 F 25 C max Power dissipation 1 2 watts per ampere per leg switched e 200KA SCC
50. r Display MA iied acl F20 1254 F20 120A F20 90A For controller configuration setup and monitoring features is BR ias Fan F25 200A F25 160A F25 140A eliminate separate power Mons iae Cooled F30 250A F30 185A F30 155A Aisa wench N A N A F35 250A F35 225A Used to torque terminal Note For current ratings at other temperatures see the rating curves in e one to six and ground lug l J he POWER SERIES User s Manual available at www watlow com Replacement Fuses for Power Series Watlow Part Number Description Bussmann Part Number 0808 0102 0100 100 amp 600VAC 170M1317 0808 0102 0125 125 amp 600VAC 170M1318 0808 0102 0160 160 amp 600VAC 170M1319 0808 0102 0200 200 amp 600VAC 170M1320 0808 0102 0250 250 amp 600VAC 170M1321 0808 0102 0315 315 amp 600VAC 170M1322 WATLOW wuu X 327 Power Switching Devices QPAC The QPAC SERIES from Watlow is a modular Silicon Controlled Rectifier SCR power controller with plug in features for flexibility Bases are rated from 150 to 1000 amperes in one phase three phase two leg and three phase three leg A variety of transformers from 120 to 575VAC along with 50 60Hz operation enable the QPAC to operate in applications anywhere Plug in control cards set the QPAC s SCR firing modes solid state contactor burst firing zer
51. rms must turn on at 90VAC must turn off at 10VAC e Input current 15mA typical 120VAC Output Voltage e 24V 24VAC min to 280VAC max e 480V 48VAC min to 580VAC max e 600V 48VAC min to 660VAC max e Off state leakage 1mA at 77 F 25 C max for GOOVAC models 10mA at 77 F 25 C max for 24 through 480VAC models e Holding current 250mA max Output Amperage e See output rating curve Ratings are into a resistive heater load Output Amperage Rating Max Surge Current 16 6 625 250 625 1000 mSec 1620 260 1620 4150 Agency Approvals e Class II construction e UL 508 recognition File 4E73741 and CSA File LR 700195 e 2006 95 EC Low Voltage Directive WATLOW Output Terminals e Compression type e For 18A models Max wire size 3 0 mm 10 AWG torque to 0 6Nm 5 3 in Ibs e For 24 to 42A models Max wire size 16 0 mm 6 AWG stranded torque to 1 5 1 7Nm 13 15 in Ibs Operating Environment e Up to 176 F 80 C See output rating curves for applications O to 90 RH relative humidity non condensing Insulation tested to 3 000 meters Units are suitable for pollution degree 2 Cycle time should be less than 3 seconds Mounting Options include DIN rail or standard back panel mounting e The DIN rail specification DIN EN 50022 1 38 in x 0 30 in 35 mm x 7 5 mm Min clipping distance 1 37 in 34 8 mm Max clipping distance 1 39 in 35 3
52. rols temperature much more accurately and allows the use of higher watt density heating elements Fast Cycle Card In order to obtain the very rapid cycling time required for longer heater life accurate temperature control and higher watt densities Watlow has developed a loop powered firing card for SSRs This card operates from a standard instrumentation signal of 4 to 20mA and controls solid state relays with a time proportional cycle rate of less than one second 4VAC cycles on and 4VAC cycles off at 50 percent power Thermal Transfer A thermal foil is provided with each solid state relay for mounting on the base of the relay to improve heat transfer In addition two belville washers are supplied to provide the proper pressure for this transfer of heat Use two 8 32 screws 0 625 in 16 mm long to secure the relay to the heat sink Replacing Contactors or Mercury Displacement Relays MDRs Improvements in heater life and control accuracy can be achieved with SSRs operated with rapid cycle times as compared to slower operating electromechanical relays or even MDRs When replacing these types of relays with the SSR it is important to consider two aspects 1 Heat Solid state devices require a small voltage to turn on which is consumed as heat approx 1 5 volts x amps watts This heat must be removed from the device and is usually accomplished by mounting the relay on a heat sink 2 Failure Mode Solid state devices
53. sted C UL and CE with filter Meets applications requiring agency approval System solution component e Provides single source thermal loop Back to back SCR design e Ensures a rugged design 314 mu WATLOW Power Switching Devices DIN A MITE C Specifications Operator Interface e Control input and indication light e Alarm output and indication light e Current limit indication LED Amperage Rating See output rating curves on the next page Max surge current for 16 6ms 1 350A peak Max l t for fusing is 9100A s Latching current 200mA min Holding current 100mA min Fan current 0 14A for 24VDC 0 12A for 120VAC 0 06A for 240VAC Off state leakage 1mA at 77 F 25 C max e Power dissipation 1 watt per ampere per leg switched e 200KA SCCR Type 1 and 2 approved with the recommended fusing see user manual Line Voltage e 24 to 48VAC units 20 4VAC min to 53VAC max e 100 to 240VAC units 48VAC min to 265VAC max e 277 to 600VAC units 85VAC min to G60VAC max e 100 to 120VAC 200 to 208VAC 230 to 240VAC 277VAC 400VAC 480VAC 600VAC 10 15 50 to 60Hz independent 5 control options L P and S Alarms Zero cross models only Shorted SCR Alarm Option Alarm state when the input command signal is off and a 10A or more load current is detected by the current transformer two turns required for 5A and three turns for 2 54 Ope
54. t T Natural convection through wall or cabinet heat sink NEMA 4X 8 0 to 5VDO input 4 1 to 5VDC input 5 0 to 10VDC input Not CE Approved for conducted or radiated emissions Line and Load Voltage 02 24 to 48VAC control options C F K 12 2 100 to 120VAC control options L P S 20 200 to 208VAC control options L P S 24 100 to 240VAC control options C F K 230 to 240VAC control options L P S 27 277VAC control options L P S 40 400VAC control options L P S 48 480VAC control options L P S O Alarm O No alarm Shorted SCR alarm not available with control options L or P H Open heater and shorted SCR alarm control option S only KD User Manual 60 277 to 600VAC control options C F K 600VAC control BN Enalish options L P S nglis 12 German 2 2 Spanish 3 French ONO Custom Options 00 Standard part 1X 1 second soft start control options P L XX Any letter or number custom options labeling etc DIN A MITE C Current Rating Table Current at 122 F 50 C 1 0 1 T 1 1 2 8 2 8 0 40A 2 8 T 46A 2 8 1 2 9 65A 3 9 0 30A 3 9 T 35A 3 9 1 2 3 WATLOW m 319 Power Switching Devices DIN A MITE D The DIN A MITE D silicon controlled rectifier SCR power co
55. th over current trip runs until programmed bakeout time expires then goes burst or phase angle firing Factory default of 24 hours e Adjustable O 9999 minutes with over current trip e Internal current transformer included Command Signal Input Analog e nput signal field selectable and scalable O to 20mA or O to 10VDC Default input signal 4 to 20mA Manual control input via digital programmer display Voltage input impedance 11kO nominal Current input impedance 1000 nominal Digital e On board digital programmer display and optional serial communications Retransmit e Field selectable and scalable O to 20mA with 8000 max load or O to10VDC with 1KQ min load e Default 4 to 20mA e Resolution mA ranges 5pA VDC ranges 2 5mV nominal e Calibration accuracy mA ranges x20pA VDC ranges 10mV nominal e Temperature stability 100ppm C Digital Programmer Display and Communications Capabilities Programming functions e Adjust input and output control type alarms and Soft start heater bakeout and current limit prompts Monitoring functions e Display input and output values along with actual output current e Data retention of digital programmer display upon power failure via nonvolatile memory Serial Communications e RS 232 for single drop control e EIA 485 for single or multidrop control e 32 units maximum can be connected With additional 485 repeater hardware up to 247 units may be connected e Isolate
56. the guesswork associated with selecting a proper heat sink and precise terminations for the application This controller holds many agency certifications and is ideal for applications that require UL8 CSA and CE approvals The SERIES CZR is available in VAC VDC input contactor versions and all configurations are model number dependent and factory selectable The SERIES CZR is protected by a two year warranty Features and Benefits DIN rail or standard panel mount e Versatile quick and low cost installation Compact size e Reduces panel space and cost Touch safe terminals e Increases installer and operator safety Mercury free e Environmentally safe Faster switching with solid state e Saves energy and extends heater life UL 508 recognized CSA LR700195 certified and CE 60950 e Applications requiring agency approval Back to back SCR design e Offers rugged design for different application environments soup STATE RE CR42A48VAC1 3m M Cc 48 530 Vac 42A 330 m X WATLOW Power Switching Devices SERIES CZR Specifications Control Mode e Zero cross fired contactor output Operator Interface e Command signal input e Input signal indication LED Input Command Signal e Input Type DC1 e Turn on voltage 4VDC max turn off voltage 1VDC min e Input current dc typically 10mA 4VDC 13mA 32VDC e Input Type AC1 e 90 to 140V
57. trol 4 SCRs zero cross only B 200 to 480V 3 3 phase 3 leg control 6 SCRs C 200 to 600V 4 3 phase 4 wire wye connected load CORRUHICSHOnE 8 2 single phase zones 9 3 single phas ne EE None Sua sicci 1 EIA TIA 232 485 communications opto isolated Heater Diagnostics field selectable 0 None KD Feedback Retransmit 1 Heater diagnostics required for any heater current 0 None monitoring or current limiting 1 Load current feedback 0 10V or 0 20mA scalable OKOK Output Amperage Rating retransmit output Must have heater diagnostics selected See amperage chart below 00 None AA No Watlow logo with agency approval marks XX Custom contact your Watlow representative for options POWER SERIES Features Amperage Chart 122 F 50 C Removable Mounting Plate Power Series snaps on a pre mounted removable subplate 3 Phase 3 Leg Ground Lug 3 Phase 2 Leg 3 Single Phase Built in designed for easy and 2 Single Zones and i E Single Phase Phase Zones 4 Wire Model Terminal Cover wo package Lem ee eae N20 100A N20 80 N20 65A Fuse Cover output communications Non Slides up and down for fuse and alame Fan N25 140A N25 105A N25 85A maintenance and covers the Cooled high voltage components N30 165A N30 120A N30 105A Digital Programme
58. ular power controller phase burst or solid state contactor fuse s and holder s included Part Number ORG OFORO KDE KD Operating Cooling Output Input Open Heater amp Output Fan Control Control f Shorted SCR Voltage Voltage Amps Card Detector Q s OTIO TS 9 4 Input Control Card 012 1 phase CD Solid state dc input 08 5286 contactor 32 2 3 phase 2 leg Optional 3rd leg fuse kit extra BF Burst fired fixed time base 08 5289 4 20mA dc 83 3 phase 3 leg BV Burst fired variable time base 08 5342 4 20mA dc AF Phase angle fired not available on Q32 08 5288 4 20mA dc AL Phase angle fired w current limit 08 541 1 4 20mA not 5 Operating and Output Voltage 12 120VAC available on Q32 AL option includes one current 20 208VAC transformer Add second CT for 3 phase 3 leg EE uc Open Heater Shorted SCR Detector 2 Open Heater Shorted SCR Detector 27 277VAC k i A E one 38 380VAC 412 A15VAC l 1 phase operation 48 480VAC DE 3 phase operation Notes 57 575VAC e The open heater shorted SCR detector is for burst fire operation Cooling Fan Voltage only Includes one current transformer for 1 phase and two current 1 120VAC required on all 3 phase models fone ee UIN P 2 240VAC required on all 3 phase models Notes Customer to supply wiring and hook up All cooling
59. with current limit e Process input factory set 9 4 20mA DC e Input impedance 2500 clip resistor for 5kO impedance voltage input or manual control input e Soft start approximately 10 seconds upon power up 1 to 2 seconds upon set point change e Current transformer included Open Heater Shorted SCR Detector e Zero cross burst fire models only e Triac output e 24 to 240VAC 300mA Q 77 F 25 C 125mA 176 F 80 C e Energizes on alarm e Holding current 200pA min e Latching current 5mA typical Outputs e 120 through 575VAC 1 2 or 3 pole 150 to 1000A per pole SCCR 200KA with original equipment specified semiconductor fusing Line Voltage Power e 50 60Hz ac line frequency Q32 and Q33 models are 50 60Hz calibration dependent e Voltage 21096 120 208 240 277 380 415 480 575VAC Line Voltage Compensation e 10 A in line 2 A in load in the 30 to 70 power region AF AL and BV Power Dissipation Watts e 1 5 W A per controlled leg Isolation e Command signal to load 1250VAC min Linearity e 2 30 to 7096 power region All units except CD Off State Leakage Current e 20mA Q 480VAC SCR Protection e Semiconductor fuses provided dv dt 200V usec min e MOV and RC snubber network standard e Q32 3rd leg fuse kit may be used but not required with 3 phase 2 leg models Mounting e Heat sink fins must be mounted in vertical orientation MOV comes only on Q33 3 phase 3 leg Power
60. wn that a zero cross SSH in combination with the fast cycle card promotes better temperature control and longer heater life than slow cycle relays Through a time proportional cycle rate of one tenth of a second heater life will be extended Both low and high voltage models are available from 24 up to 530VAC All ac output models include back to back Silicon Controlled Rectifiers SCRs for a more rugged design than the traditional triac based SSR The internal design allows it to handle high currents and the harsh electrical environments of heavy industry Watlow also offers a switched VDC model for dc heating applications Watlow can provide all the components necessary for trouble free operation This includes two standard convenience items a thermal foil to ensure proper thermal transfer from the relay to the heat sink and belville washers that ensure the relay is mounted with Sufficient pressure for good heat transfer Matched semiconductor fuses and heat sinks are available to complete the power switching package WATLOW Features and Benefits Fast cycle card e Increases heater life e Optimizes temperature control e Allows for higher watt density heaters Zero cross firing e Results in minimal electrical noise Back to back SCR design e Withstands harsh or hostile industrial environments UL recognized File 4E151484 and 4E73741 CSA certified up to 600VAC File 2LR700195 VDE 60950 License 40021401 File 1995500 up to 4

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