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Littelfuse® Symcom 201A 3-Phase Phase Monitoring Relay, 190 to 480 VAC, SPDT Contact

Selected Littelfuse® Symcom 201A 3-Phase Phase Monitoring Relay, 190 to 480 VAC, SPDT Contact
Littelfuse® Symcom 201A 3-Phase Phase Monitoring Relay, 190 to 480 VAC, SPDT Contact

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Short Description

The 201A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200V and 400V range. The 201A includes advanced single LED diagnostics, where color and different light patterns distinguish between faults and normal conditions.This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the 201A's output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels.

Features

  • 12 to 22 AWG wire
  • Stranded/solid wire
  • -20 to 70 deg C operating temperature
  • 12 in lbs torque
  • Constant monitoring of single phase, low voltage, voltage unbalance, phase reversal, harmful power line conditions
  • Allows flexibility in panel installation
  • Automatically senses system voltage between 190 - 480VAC. saves setup time
  • Quick visual indicator for cause of trip and relay status
  • LED indications include normal operation, power-up restart delay, reverse-phase trip, unbalance single-phase trip, high/low voltage trip

Specification

Frequency Rating
50/60 Hz
Mounting Type
DIN Rail/Surface
Minimum Order Qty
1
Order Interval
1
Catalog ID
L-F201A
Contact Configuration
SPDT
Dimensions
2.38 in W x 4.13 in D x 1.75 in H
Series
201A
Voltage Rating
190 to 480 VAC
Standard & Approvals
UL508 Listed, CE Certified

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