2CTB803972R0500

The ABB OVR T2 1N 40-275 P TS QS (2CTB803972R0500) is a Type 2 surge protective device designed to protect low-voltage electrical installations and connected equipment against transient overvoltages caused by indirect lightning strikes and switching operations. It is suitable for 230/400 V AC distribution systems using TT and TN-S earthing arrangements.

The device provides 1P+N protection, with 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 facilitates replacement and maintenance. The integrated TS auxiliary signaling contact enables remote monitoring of the device's operating status. Designed for 35 mm DIN-rail mounting, it is suitable for residential, commercial and industrial electrical distribution boards.