Power circuit shut off device

A power circuit shut off device comprising:

• a housing;
• a switch portion that is provided in the housing;
• and
• an operating member configured to turn on or turns off the switch portion,
• wherein the switch portion comprising:
• a pair of terminals arranged along a bottom face of the housing;
• an electric conductive member having contact point portions and that is elastically urged toward the pair of terminals, wherein the pair of terminals are brought into electric conductive to each other when the pair of terminals contact the contact point portions respectively;
• and
• an insulating movable member configured to move along a direction in which the pair of terminals are arranged, and that is made of insulating material;
• wherein the insulating movable member is moved between a shut-off position and a conductive position by an operation on the operating member, the insulating movable member in the shut-off position being put between the contact point portions of the electric conductive member and the terminals so as to turn off the switch portion, and the insulating movable member in the conductive position being released from between the contact point portions of the electric conductive member and the terminals so as to turn on the switch portion.