Abstract: A switching operation mechanism to a molded case circuit breaker, including at least one operating handle, which is movable in a rotatable trajectory, said switching operation mechanism including at least one external rotary handle, at least one operation member and at least one movement transmission means, the said operation member being capable of moving in rotating trajectory in equivalent direction to the movement in rotating trajectory of the handle for operating the circuit breaker in molded case, arranged inside a housing including a laterally bipartite body, reaching an efficient movement transfer, requiring less mechanical effort of proportional operation of the user on the external rotary handle, wherein it is possible to maintain an external rotary handle, of great dimensions proportional to the assembled assembly, “within” the general perimeter of the molded case circuit breaker.

Abstract: An electromagnetic switching device, with several distinct regions (10, 20, 30, 40), where each region separates and places the terminals and the connection means in an improved form which make easy the identification of the terminals for the user when the contactor is fixed inside the panel; where the first region (10), have function of fixing the contactor on the panel and also houses the electromagnet; a second region (20) comprising the power terminals (21); a third region (30) that houses the auxiliary terminals (31, 32) and the command terminals (33); a fourth region (40)>> that is used for the connection of accessories; the third region presents a clear distinction between auxiliary terminals (31, 32) and command terminals (33), given by the asymmetry created viewed from the top; combined with a proposed uneven disposition X1 and X2 of the command terminals (31, 32) and auxiliary terminals (33) viewed from the front in the same third region.