Entes FR-02 Phase Sequence Relay

The phase sequence relay is designed to check the sequence of the 3 phases supplying motors. If phases R, S and T are in the correct order, the light on the front panel is ON. If the phase sequence is wrong, the light goes OFF and the output relay releases (OFF). Phase sequence relays are used to protect 3-phase motors in systems such as air compressors and lifts. The FR-02 is recommended wherever reverse rotation of motors could harm people or damage systems.