Protection device, protects the devices against lighting discharges or surges in AC 230V power lines; Device type: Overvoltage limiter, Three-phase ; Rated voltage: 230 / 400 V AC ; Maximal voltage: 320 V AC ; Class: 1+2 type ; Protection level Up L/PE, N/PE: 1.2 kV @ 10/350 µs (T1) 1.7 kV @ 8/20 µs (T2) ; Nominal discharge current (L/PE, N/PE): 8 kA @ 10/350 µs (T1) 20 kA @ 8/20 µs (T2) ; Housing: DIN, TS-35 rail mounting ;