ABB OVRT22N40440PTSU Overcurrent Protection Relay

ABB OVRT22N40440PTSU is a Type 2 surge protective device (SPD) built for 3‑pole protection in 440 V systems, part of ABB’s System pro M compact OVRT family. It provides protection for L–L, L–N, N–G, and L–G configurations with a 200 kAIC short‑circuit rating and a 40 kA peak surge current rating, delivering ultra‑fast transient suppression with a response time under 25 nanoseconds. The cartridge‑based unit uses plug‑in terminals and mounts on a DIN rail for straightforward integration in distribution panels, industrial controls, and machinery enclosures. Encased in a gray IP20/NEMA 1 housing, it measures 98.5 mm high, 35.6 mm wide, and 64.8 mm deep and weighs about 360 g. It operates from −40 °C to 80 °C, making it suitable for harsh industrial environments, and includes a local status indicator (with remote indicator option) to monitor cartridge health. Designed to protect sensitive electronics such as PLCs, drives, and sensors from surge events, the OVRT22N40440PTSU employs replaceable cartridges to minimize downtime after a surge while maintaining reliable, continuous protection for power distribution networks.