Patent ID: 8664555

Claim:
A trip button mechanism of an externally operable handle, the trip button mechanism for operating a circuit breaker trip button of a circuit breaker and comprising: a button support located at an outer casing of the externally operable handle, the button support exposed through a penetration hole of the outer casing; an externally operable trip button comprising: the externally operable handle exposed through the penetration hole; a pusher formed in one piece with the handle, the pusher movable along the button support for selectively pushing the circuit breaker trip button; and a pair of extension parts spaced from each other; and an elastic member for applying an elastic force to the externally operable trip button in a direction opposite to a direction in which the pusher pushes the circuit breaker trip button, wherein the button support has a hollow polyhedron shape, wherein two opposite sides of the button support are opened for locating the externally operable trip button and the elastic member, wherein the two opposite sides of the button support are closed by the pair of extension parts, and wherein the elastic member is located between the pair of extension parts.