Industrial 45POVR-4W Three Phase Over Voltage Relay

The 45POVR-4W is a 3‑phase, 4‑wire over‑voltage monitoring relay from Broyce Control that protects electrical feeders by tripping two Form‑C outputs when the monitored voltage exceeds the set limit. Designed for phase‑to‑phase voltages of 220, 380, or 400 V AC in systems operating at 45–65 Hz, it offers an adjustable over‑voltage trip level with tunable hysteresis for precise protection. The unit provides two 8 A relay outputs (DPDT) for interlocking or shutdown of connected equipment and is specified for an input‑voltage variation of 0.75 to 1.25 × Un, with isolation described in terms of overvoltage category. By monitoring a three‑phase, four‑wire network, the 45POVR‑4W serves as a dedicated protection device for industrial power systems, helping prevent damage to motors, transformers, and other critical loads when voltages rise outside the safe operating window.