Manufacturing for CHC has been discontinued.  As an alternative, please refer to P153, P14N or 350.

The CHC relays are cup-type, high speed, sensitive, overcurrent fault detector relays. These relays may be set to pick up below full load current and operate continuously in the picked-up position. The cup unit circuits are designed to prevent contact welding.

Protection and Control 

  • 3 phase and ground instantaneous O/C

CHC Instantaneous Overcurrent - Legacy

Manufacturing for CHC has been discontinued.  As an alternative, please refer to P153, P14N or 350.

The CHC relays are cup-type, high speed, sensitive, overcurrent fault detector relays. These relays may be set to pick up below full load current and operate continuously in the picked-up position. The cup unit circuits are designed to prevent contact welding.

Protection and Control 

  • 3 phase and ground instantaneous O/C