Type 1 / Class B Three phase

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Type 1 / Class B Three phase
Type 1/Class B Protection: At Main Distribution Panels after Transformer & Generator

Lightning current surge arresters Type 1 & Class B according to EN 61643-11 & IEC 61643-1 for the lightning protection zone 0-2 for low voltage main panel consisting of 4 numbers of din mountable encapsulated multiple spark gap technology having function display and double input/output termination complying the below technical parameters:

a) Nominal voltage between L-N, Un = 230 volts
b) Maximum continuous operating voltage between L-N, Uc = 320 volts
c) Maximum continuous operating voltage between N-PE, Uc = 255 volts
d) Lightning Impulse Current (L-N), Iimp (10/350 micro sec) = 50 KA
e) Lightning Impulse Current (N-PE), Iimp (10/350 micro sec) = 125 KA
f) Nominal discharge surge current (8/20 micro sec) : 125 KA
g) Voltage Protection Level (L-N, N-PE), Up ≤ 1.3 KV
h) Follow current quenching capacity,Ipeak = 25 KA rms
i) Response time, tA = < 100 nano seconds
j) Working condition of the SPD - Visual indication = Green “OK” & Red “Failure”
k) Temp Range, -40° C to +85° C
l) Degree of Protection IP 20  

Model Number:MCD 50-B-OS 320 = 03 Nos+MCD 125-B NPE = 01 No