Test button loop device and circuit breaker

A test button loop device, comprising an elastic button and a conductive member which form a test loop, wherein the elastic button comprises a contact portion matched with the conductive member, and a button member pressing the contact portion;

• the conductive member is in linkage with a handle mechanism or an operating mechanism or a moving contact of a circuit breaker;
• the handle mechanism or the operating mechanism or the moving contact of the circuit breaker drives the conductive member to approach the contact portion when the circuit breaker is closed, and the button member at this time is pressed to drive the contact portion to move and can contact the conductive member;
• and the handle mechanism or the operating mechanism or the moving contact of the circuit breaker drives the conductive member to move away from the contact portion when the circuit breaker is opened, and the button member at this time is pressed to drive the contact portion to move will not be able to contact the conductive member, wherein the conductive member is rotatably assembled in a shell of the circuit breaker, and a first end of the conductive member is in linkage with the handle mechanism or the operating mechanism or the moving contact of the circuit breaker, such that a second end of the conductive member moves close to the contact portion in a closed state, and moves away from the contact portion in an opened state, and wherein a limiting groove is formed in the shell, and the second end of the conductive member swings within the limiting groove.