To provide a contact part of a switch preventing melting caused by non-contact of a movable contact with finger contacts even when short-time current is carried.

A hole 2a into which the tip of a movable contact 5 can be inserted is formed in the bottom surface of a contact support 2, and an insulating material 17 is attached on the inner periphery of the hole 2a. Under the closed condition that the tip of the movable contact 5 is inserted into the hole 2a of the contact support 2 and it is gripped by finger contacts 11, when short- time current is carried, the tip of the movable contact 5 is contacted with the insulating material 17, which regulates the motion of the movable contact 5 in the direction orthogonal to the axis of the contact 5.