2CTB803983R1100

The ABB OVR T2 3N 40-350 P QS (2CTB803983R1100) is a four-pole 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 three-phase 230/400 V AC electrical distribution systems and compatible with TT and TN-S earthing arrangements.

The device provides protection for three phases and neutral, with a maximum continuous operating voltage of 350 V AC, a nominal discharge current of 20 kA and a maximum discharge current of 40 kA per pole (8/20 μs waveform). It incorporates Quick Safe thermal monitoring and a replaceable plug-in protection module, with a mechanical status indicator for visual inspection. The device is designed for 35 mm DIN-rail mounting in distribution boards and complies with IEC 61643-11 and EN 61643-11 standards.