... monitor control and protect of the circuit. It complies with the standard of IEC60298, GB3906, and DL404 and ... process. The cubicles are isolated by metal clapboard with unique pressure channel. Technical parametersItemUnitValueRated voltageKV40.5Rated insulation ... withstand current (4S)KA20, 25, 31.5Specified short circuit drop-out currentKA20, 25, 31.5Rated withstand current (peak)KA50, 63 ...