202 Series – Three-Phase Voltage Monitor Relay Series - Littelfuse 202 Voltage Relays/Monitors Provide Superior Protection

Series: 202 Series – Three-Phase Voltage Monitor Relay
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The 202 series is a three-phase, auto-ranging, dual-range voltage monitor that protects 190–480 V ac, 50*/60 Hz motors regardless of size. The 202-RP (and the 202-575-RP for 475–600 V ac) monitors the phase rotation of the three-phase systems and trips on reverse-phase only. Critical applications include fan motors, scroll compressors, grinders, conveyor systems, elevators, and escalators. Both products provide a user-selectable, nominal voltage setpoint and automatically select between the 200 V and 400 V range.

This unique microcontroller-based voltage and phase-sensing device constantly monitors the three-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the MotorSaver’s output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels for a specified amount of restart delay time (or a manual reset). The 202 series includes advanced single LED diagnostics. Five different light patterns distinguish between faults and normal conditions. The status light turns green and the relay is activated when rotation is correct.

*Note: 50 Hz will increase all delay timers by 20 %. CE Pending

Features

  • Proprietary microcontroller-based circuitry
  • Compact, quick mounting design
  • Advanced LED diagnostics
  • Small footprint
  • Auto-sensing wide voltage range (202 & 202-RP)
  • Adjustable trip delay (202)

Product Literature

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)		Output
Form		Termination TypeMounting MethodDimensionsWeight (lbs/g)Dielectric BreakdownHumidityInput AC Line Frequency (Hz)Input Phase SequenceInput Tolerance (%)Maximum Input PowerOutput Load Rating (VA)Overvoltage Reset Voltage (%)Overvoltage Trip Voltage (%)StockSamplesCompare
202190 - 480 VacSPDT0.25 in male quick connect1/4 in socket head cap screw (customer supplied)2.5 H x 2.5 W x 1.4 D in. (63.5 x 63.5 x 35.6 mm)0 Lb≥196095% non-condensing50 / 60 (50 will increase all delay timers by 20%)A; B; C±10%5Pilot Duty: 480 VA @ 240 Vac; General Purpose: 10 A @ 240 Vac107%110%CheckOrder
202-575-RP475 - 600 VacSPDT0.25 in male quick connect1/4 in socket head cap screw (customer supplied)2.5 H x 2.5 W x 1.4 D in. (63.5 x 63.5 x 35.6 mm)0 Kg≥196095% non-condensing50 / 60 (50 will increase all delay timers by 20%)A; B; C±10%5Pilot Duty: 480 VA @ 240 Vac; General Purpose: 10 A @ 240 Vac107%110%CheckOrder
202-RP190 - 480 VacSPDT0.25 in male quick connect1/4 in socket head cap screw (customer supplied)2.5 H x 2.5 W x 1.4 D in. (63.5 x 63.5 x 35.6 mm)0 Kg≥196095% non-condensing50 / 60 (50 will increase all delay timers by 20%)A; B; C±10%5Pilot Duty: 480 VA @ 240 Vac; General Purpose: 10 A @ 240 Vac107%110%CheckOrder
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