Fanox electronic motor protection relays

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The Fanox electronic motor protection relays provide both basic and advanced protection of three-phase motors.

The relays provide distinct technical advantages including: continuous thermal image memory of heating and cooling cycles of the motors’ starting, running, overload and stop times; rapid detection of phase loss even at low loads with fast relay tripping; fast identification of trip cause and rectification of faults.

Models range from the basic C series providing overload and phase loss/imbalance through to the advanced PBM motor management system that includes thermistor input, earth leakage and jam detection with built-in RS485 Modbus RTU communication.

Motor current from 3 to 200 A at voltages up to 1000 V can be measured with the built-in CTs. Protection of motors up to 2000 A is possible with the use of external CTs. Optional front-panel-mounted indicator units display the trip cause and allow resetting of the relay without opening the MCC.