OVR T1 3N 25-255
OVR Type 1 surge protective devices TNS - TT - 230 V - 3Ph+N networks
Standard IEC 61643-1 / EN 61643-11
Type / test class T1 / I
Nominal voltage Un 230 / 400 V
Maximum continuous operating voltage Uc 255 V
Maximum impulse current Iimp (10/350) 25 kA
Nominal discharge current In (8/20) 25 kA
