An electromagnetic operating device comprising: - a fixed core ; - a movable core movably configured with respect to the fixed core ; - an electromagnetic coil which moves the movable core by excitation to open or close a switch device coupled to the movable core ; and - a driving power supply that supplies electric power to the electromagnetic coil , wherein the driving power supply is composed of: - a capacitor power supply which performs opening/closing operation of the switch device in a normal time, and has a capacitor that stores electric power to be supplied to the electromagnetic coil and a control board that controls a current to be supplied from the capacitor to the electromagnetic coil in response to an open-contact or close-contact command to the switch device ; and - a DC power supply which performs opening/closing operation of the switch device in an emergency at which the capacitor power supply does not operate and directly supplies DC electric power to the electromagnetic coil , characterised in that the electromagnetic operating device includes switching means which switches between a circuit to be connected from the capacitor power supply to the electromagnetic coil and a circuit to be connected from the DC power supply to the electromagnetic coil , and wherein the switching means is attachably and detachably connected by connecting means inserted in the middle of the circuit to be connected from the capacitor power supply to the electromagnetic coil , and switches from the circuit on the capacitor power supply side to the circuit on the DC power supply side in the emergency at which the capacitor power supply does not operate. - a fixed core ; - a movable core movably configured with respect to the fixed core ; - an electromagnetic coil which moves the movable core by excitation to open or close a switch device coupled to the movable core ; and - a driving power supply that supplies electric power to the electromagnetic coil , - a capacitor power supply which performs opening/closing operation of the switch device in a normal time, and has a capacitor that stores electric power to be supplied to the electromagnetic coil and a control board that controls a current to be supplied from the capacitor to the electromagnetic coil in response to an open-contact or close-contact command to the switch device ; and - a DC power supply which performs opening/closing operation of the switch device in an emergency at which the capacitor power supply does not operate and directly supplies DC electric power to the electromagnetic coil , the electromagnetic operating device includes switching means which switches between a circuit to be connected from the capacitor power supply to the electromagnetic coil and a circuit to be connected from the DC power supply to the electromagnetic coil , and wherein the switching means is attachably and detachably connected by connecting means inserted in the middle of the circuit to be connected from the capacitor power supply to the electromagnetic coil , and switches from the circuit on the capacitor power supply side to the circuit on the DC power supply side in the emergency at which the capacitor power supply does not operate. <EOS>