- Supports 240VAC
- Detects ground faults
- Two warning and one alarm level
- Operates on 1 or 3 phase underground systems up to 6 kV
- 4.45” height x .3.93” width x 2.95” depth
- 1 lb. in weight
The Littelfuse PGR-3200 operates on AC ungrounded systems. This insulation monitor detects ground faults by continuously monitoring the insulation integrity of ungrounded electrical systems. The relay monitors the insulation for damage. The Littelfuse PGR-3200 assists with predictive maintenance and troubleshooting of developing ground faults by providing two warning and an alarm level. The PGR-3200 operates on one- or three-phase ungrounded systems up to 6 kV.
The Littelfuse PGR-3200 can also be used on a grounded system to monitor the insulation for damage, while the power system is de-energized. The mode-of-operation terminals (27-28) are connected to the circuit breaker or contactor auxiliary contacts to toggle the relay off when the contactor or breaker is closed.