Patent ID: 6921287

Claim:
An exchangeable module for an electric system, comprising: a case; an exchangeable module mounted on the case; an AC main coupled electric device having multiple null terminals and circuit terminals and mounted in the case, wherein the null terminals are connected to the exchangeable module by a connector and alternatively formed on the AC main coupled electric device; a conductive device mounted on the exchangeable module and corresponding to the null terminals and the circuit terminals on the AC main coupled electric device, the conductive device being separately connected to the null and circuit terminals on the AC main coupled electric device; whereby the conductive device is used to make or break electric connection between the exchangeable module and the AC main coupled electric device, the conductive device comprising: an insulating body formed to be L-shaped having a long side and a short side where the multiple conductive switch plates are mounted; and multiple conductive switch elates respectively mounted on the insulating body, wherein each conductive switch plate corresponds to a pair of adjacent null and circuit terminals separated by a distance, has a width and electrically connects the pair of adjacent null and the circuit terminals.