Miniaturized thermal contact breaker for printed circuit board.

摘要

The invention relates to a contact breaker of the type including a cover (14) receiving a casing (16) of complementary shape, inside of which is longitudinally slideably mounted a slider (22) which delimits an upper chamber (24) of the casing in which is mounted a sudden action bimetal strip (44) connected to one of the two terminals of a power circuit and bearing a moving contact (50) and a lower chamber in which is arranged a fixed contact (40) connected to the second terminal of the power circuit, the slider including a window through which extends the moving contact (50) in order to come into contact with the fixed contact (40) and axially immobilize the slider (22), in opposition to the force applied against it by a trip spring bearing inside the casing, when the contact breaker is in its tripped position, and a contact breaker tripping signalling electrical circuit (68-70-80) which is electrically isolated from the power circuit.