Littelfuse, Inc. Littelfuse 102A Voltage Monitoring Relays Provide Superior Protection 102600

The 102A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-400VAC, 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. A unique microcontroller-based voltage and phase-sensing circuit constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels. The Model 102 includes advanced single LED diagnostics. Five different light patterns distinguish between faults and normal conditions.

Voltage Asymmetry, Voltage Sensing AC 475 ~ 600VAC

Industrial Relays 95-120VAC 50/60Hz 3PH 11P VM 60mSTRIP