2CTB815710R1900

The ABB OVR T1-T2 3N 12.5-275s P QS is a four-pole, pluggable surge protection device designed to protect low-voltage electrical installations against lightning currents and transient overvoltages. It combines Type 1 and Type 2 protection and is suitable for compatible 230/400 V AC distribution systems using TT and TN-S earthing arrangements.

The device uses spark-gap and varistor technology, with a reserve-varistor feature intended to maintain basic protection at the end of the main varistor's service life until replacement. It is designed for DIN-rail installation in commercial and industrial electrical distribution panels.