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

The 102A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-600VAC, 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 102A includes advanced single LED diagnostics. Five different light patterns distinguish between faults and normal conditions.

Monitor Relay, 190-480V 3-Ph,

Industrial Relays 230VAC 50/60Hz 5W 1SP PUMP SAVER

Voltage Asymmetry, Voltage Sensing AC 190 ~ 480VAC