ABB OVRT23N15320PU Overvoltage Protection Relay

ABB OVRT23N15320PU is a DIN-rail mounted surge protective device (SPD) from ABB’s OVR line, designed for 320 V AC three‑phase systems with a neutral conductor. This Type 2 SPD supports 3P+N configurations with four conductors and protects against transients across L–G, L–L, L–N, and N–G paths, delivering fast response times to clamp surges on industrial power rails. It carries a 200 kAIC short‑circuit rating, a 15 kA peak surge current rating, and a nominal discharge current of 5 kA, with a maximum operating voltage of 320 VAC. The enclosure measures 90.5 mm high by 71.2 mm wide by 64.8 mm deep, is gray, and is designed for DIN rail mounting with plug‑in terminals for straightforward installation. A state indicator monitors protection status, and the unit is rated IP20/NEMA 1 for indoor use. Suitable for protecting motors, drives, PLCs, and other sensitive equipment in industrial control panels and electrical switchgear, the OVRT23N15320PU provides reliable transient suppression in space‑constrained ABB System pro M compact environments.