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Littelfuse Inc.
111P and 233P Series
Littelfuse Inc.
201-xxx-SP-DPDT Series
 
Littelfuse Inc.
201A Series
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201-xxx-SP-DPDT Series

Single-Phase Voltage/Phase Monitor

Littelfuse Inc.

The 201-xxx-SP-DPDT is an 8-pin octal-base, plug-in voltage monitor designed to protect single-phase motors regardless of size. The 201-100-SP-DPDT is used on 95-120VAC, 50/60Hz motors to prevent damage caused by low voltage. The 201-200-SP-DPDT is used on 190-240VAC, 50/60Hz motors. The units 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 relay’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.

Specifications
  • Circuit:DPDT (2 Form C)
  • Contact Rating @ Voltage:10A @ 240VAC
  • Delay Time:Fixed, 4 Sec
  • Mounting Type:Socketable
  • Operating Temperature:-20°C ~ 70°C
  • Output Type:Relay
  • Trip Range:190 ~ 240V AC
  • Trip Status:Energized Low
  • Type:Voltage Sensing AC
  • Voltage - Supply:190 ~ 240VAC
Parts
Associated Product
Littelfuse Inc. NDS-8
Category: Electromechanical-Relays-Relay Sockets