CIRCUIT BREAKER Russian patent published in 2004 - IPC

FIELD: electrical engineering, in particular, circuit breakers that can be used for protection of electric circuits against short-circuit currents and overloads. SUBSTANCE: the circuit breaker has a magnetic core, contact system directed by an armature, ferromagnetic piston in a non-magnetic cylinder filled with liquid, and a shunt containing a ferromagnetic plate, the main and additional windings of the electromagnet. The shunt ferromagnetic plate is installed without any clearance relative to the non-magnetic cylinder, and a non-magnetic clearance is formed between the shunt plate and the magnetic core. EFFECT: reduced overall dimensions of the circuit breaker. 1 dwg