Overload protective circuit breaker

Details Overload protective circuit breaker Overload protective circuit breaker

H - Electricity

01

H

306/183

H01H 73/30 (2006.01) H01H 71/74 (2006.01)

Patent

CA 1257314

ABSTRACT OF THE DISCLOSURE A preferably push button-actuated overload protective circuit breaker with bimetal cut-out is devised for being plug- ged into a flat female plug socket. The circuit breaker com- prises a bimetal contact element and a fixed contact element besides each other and consisting each of an elongated punched-out part of substantially flat right parallelepiped shape. They have outer ends protruding out of a circuit breaker housing and lying with their flat longitudinal sections in the same plane, while their inner free ends inside the housing have their flat longitudinal sections lying in two different planes which are parallel with,but spaced from each other. A bimetal snap element is fastened at one end thereof, on the inner free end of the bimetal contact element and overlaps with its opposite slew- able end,which bears a bimetal contact post, the inner free end of the fixed contact element and a fixed contact post thereon. In a rest position adopted by the unheated bimetal contact element, the two contact posts are in direct contact and make circuit. In their middle regions, the bimetal and fixed contact elements are embedded positively in a form-stable base member made of injectable or castable synthetic electri- cally insulating material, which base member forms:a part of the walls of the housing. At the region where the bimetal con- tact element protrudes from the base element to extend into the interior of the housing, it bears a weakened zone, e.g. a punched-out hole,as a bending zone being adjustable to a desired bend.

514688

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