Abstract: The present invention relates to a connector which is a component of a high-voltage power supply connecting device, and which is capable of being prevented from being easily separated inadvertently or by an inexpert operator to prevent the occurrence of an electric shock accident, is capable of preventing the occurrence of an electric arc or the like during separation of the connector to improve safety, is capable of being easily and stably fixed and mounted on a desired location in an installation path inside an electric equipment chamber of an electric car, has a simple structure, and is capable of improving workability of an operator; and the high-voltage power supply connecting device including the same.

Abstract: The inventive concept relates to a service plug unit capable of stably maintaining shielding performance even during vibration of a vehicle, safely cutting off high voltage/current power, and preventing an unintended power cut-off caused by an external force such as vibration, a device unit, and a power cutting-off system for use in an electric car and including the same.

Abstract: The present invention relates to a connector which is a component of a high-voltage power supply connecting device, and which is capable of being prevented from being easily separated inadvertently or by an inexpert operator to prevent the occurrence of an electric shock accident, is capable of preventing the occurrence of an electric arc or the like during separation of the connector to improve safety, is capable of being easily and stably fixed and mounted on a desired location in an installation path inside an electric equipment chamber of an electric car, has a simple structure, and is capable of improving workability of an operator; and the high-voltage power supply connecting device including the same.