Phase Controlling Relays with LED Status Indication operates on multiple voltage supply of 3 X 208 to 3 X 480 V AC. Phase Controlling Relays performs with True RMS measurement and control its own supply voltage. These Phase Controlling Relays are equipped with LED status indication that facilitates ease of installation. Phase Controlling Relays with LED Status Indication can effectively control 3-phase networks: phase sequence, total phase failure.