Protection device against impulse overvoltages GSK123-230/25 3+1 (LT), cat.no.123 111.

Four-pole overvoltage arresters of test class I+II+III combined type for networks with earthing system type TN-S, TT. Uo = 230/380 V 50 Hz. Iimp(L/N) (10/350)= 25 kA, Iimp(N/PE)(10/350)= 100 kA. They are installed within 0A(V) - 1 lightning protection zones (in accordance with GOST R IEC 62305-1 and SO-153-34.21.122). They are intended for protection of equipment in low-voltage power distribution systems up to 1000 V at air or cable power input. They are made according to the scheme for protection against transverse overvoltages in the circuits "wire to wire".