201-SP-DPDT Series – Single-Phase Voltage/Phase Monitor Series - Littelfuse 201-SP-DPDT Voltage Monitoring Relays Provide Superior Protection

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The 201-SP-DPDT series is an 8-pin octal base, plug-in voltage monitor designed to protect single-phase motors regardless of their size. The 201-100-SP-DPDT is used on 95–120 V ac, 50/60 Hz motors to prevent damage caused by low voltage. The 201-200-SP-DPDT is used on 190–240 V ac, 50/60 Hz motors. These monitors feature two isolated sets of contacts that are ideal for use with two control circuits with different voltages. The unique microcontroller-based voltage and voltage-sensing circuit constantly monitors the voltage to detect harmful power line conditions. When a harmful condition is detected, the MotorSaver’s output relays are deactivated after a specified trip delay. The output relays reactivate after power line conditions return to an acceptable level and a specified amount of time has elapsed (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.

Notes:

  • Must use Model OT08PC socket for UL Rating
  • Manufacturer’s recommended screw terminal torque for the RB series and OT series octal sockets is 12 in.-lbs.

Features

  • Proprietary microcontroller-based circuitry
  • Fixed trip delay 4 seconds
  • Advanced LED diagnostics
  • Compact design for 8-pin; DIN-rail or surface mount

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Output
Form
Termination TypeMounting MethodDimensionsWeight (lbs/g)HumidityInput AC Line Frequency (Hz)Maximum Input PowerOutput Load Rating (VA)Restart Delay RangeStorage Temperature (F/C)Trip Delay RangeTrip Point Accuracy (%)Undervoltage Reset Voltage (%)StockSamplesCompare
201-100-SP-DPDT95 - 120 VacDPDTTorque: 12 in-lbs.; 12 - 22 AWG solid or strandedDIN rail or surface mount (plug into OT08-PC socket)1.75 H x 2.38 W x 4.13 D in. (44.5 x 60.3 x 104.8 mm)0 Kg10 - 95% non-condensing per IEC 68-2-350 / 60 (50 will increase all delay timers by 20%)5Pilot Duty: 480 VA @ 240 Vac; General Purpose: 10 A @ 240 VacAfter a Fault or Complete Power Loss: 2 s-40° to 80°C (-40° to 176°F)Low Voltage: 4 s±1%93%CheckOrder
201-200-SP-DPDT190 - 240 VacDPDTTorque: 12 in-lbs.; 12 - 22 AWG solid or strandedDIN rail or surface mount (plug into OT08-PC socket)1.75 H x 2.38 W x 4.13 D in. (44.5 x 60.3 x 104.8 mm)0 Kg10 - 95% non-condensing per IEC 68-2-350 / 60 (50 will increase all delay timers by 20%)5Pilot Duty: 480 VA @ 240 Vac; General Purpose: 10 A @ 240 VacAfter a Fault or Complete Power Loss: 2 s-40° to 80°C (-40° to 176°F)Low Voltage: 4 s±1%93%CheckOrder
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