ABB OVRT23L40550PTSU Overvoltage Relay

ABB OVRT23L40550PTSU is a 3‑pole Type 2 surge protective device (SPD) designed for 3‑phase systems in industrial control panels, DIN rail mounted for quick integration. It protects downstream equipment from transient overvoltages on 480 V AC line‑to‑line networks (MCOV 550 V AC) and operates at 50/60 Hz, with a short‑circuit current rating up to 200 kA. The device provides a nominal discharge current of 10 kA and a maximum surge current of 40 kA, with a voltage protection level (VPR) of up to 1.7 kV (L‑G) to minimize voltage rise during transients. Its plug‑in terminals and compact gray enclosure measure roughly 53.4 mm wide by 64.8 mm deep by 98.5 mm high, suitable for NEMA 1 environments in panel installations. A state/remote indicator facilitates monitoring of protection status, and the unit is part of ABB’s System pro M Compact surge protection family, aligned with UL 3rd Edition requirements for Type 2 SPD devices. This model, OVRT23L40550PTSU, is intended to safeguard motors, drives, sensors, and other 3‑phase downstream equipment from power‑line surges in commercial and industrial applications.