2CTB803972R1100

The ABB OVR T2 1N 40-275 P QS (2CTB803972R1100) is a Type 2 surge protective device designed to protect low-voltage electrical installations and connected equipment against transient overvoltage's caused by indirect lightning strikes and switching operations. It is suitable for 230/400 V AC electrical distribution systems with TT and TN-S earthing arrangements.

The device features a 1P+N configuration, a maximum continuous operating voltage of 275 V AC, a nominal discharge current of 20 kA, and a maximum discharge current of 40 kA (8/20 μs waveform). Its plug-in cartridge design allows convenient replacement, while its QuickSafe (QS) technology provides an end-of-life status indication. Designed for 35 mm DIN-rail mounting, it is compatible with ABB System pro M compact equipment and is suitable for use in residential, commercial and industrial distribution boards.