The utility model relates to a maloperation interlocking device is prevented to loop -network switch cabinet cable chamber door has and arranges at the indoor spring bolt dog of serving the end of loop -network switch cabinet cable chamber door door lock handle, is equipped with the electromagnetic lock mounting panel in the loop -network switch cabinet cable chamber, installs the electromagnetic lock on the electromagnetic lock mounting panel, and electromagnetic lock spring bolt stretching position is just to the top of spring bolt dog, the utility model discloses simple structure, convenient operation, the cable chamber door that can ensure loop -network switch cabinet realize reliably preventing the requirement of maloperation, low cost, economy is suitable for.