Moving contact carrier arrangement for a circuit breaker mechanism

摘要

A circuit breaker mechanism comprises a line terminal (10), a load terminal (12) and a set of contacts between the terminals. A fixed contact (12) is connected to the line terminal, and a moving contact (18) is connected to the load terminal via a conductive frame (26) and a load sensing element. The moving contact is fixed to a contact carrier (16) which is supported pivotably on conductive pins (40, 42) which are electrically connected to the frame. A spring (58) urges the contact carrier into snug engagement with the conductive pins. The arrangement obviates the need for a flexible conductive pig-tail between the contact carrier and the frame, simplifying the construction and improving the performance of the circuit breaker.