PURPOSE: To detect the temperature of coils and the like by a common thermosensible member, and to operate two sets or more of opening/closing or opening mechanisms insulated electrically each other, simultaneously, by providing two sets or more of opening/closing or opening mechanisms insulated electrically each other, and operating these opening/closing or opening operations by a common thermosensible member.

CONSTITUTION: This thermosensible switch furnishes a bimetal 1 as a thermosensible member, and two sets of opening/closing mechanisms using contacts 2 as opening/closing mechanisms, while electrodes 3 and 4 are insulated electrically each other by an insulating plate 5, and the force from the bimetal 1 is to be delivered to two sets of electrodes 3 and 4 simultaneously. Furthermore, since they are surrounded by a case 6 which has an electric insulation property and a good heat conductability, the heat from the outside is easily transmitted to the bimetal 1, and the bimetal 1 can operate two sets of electrodes 3 and 4 simultaneously.