FIELD: electricity.
SUBSTANCE: invention is referred to automatic circuit breaker for switching circuits of medium and high voltage. The circuit breaker comprises pole part (1) and magnet core (2). The pole part (1) comprises cup-shaped case (4) of insulating material with disconnecting insert (3) in it and the latter is actuated by up-and-down rod (12). The cup-shaped case (4) is divided into the upper part (5) with disconnecting insert (3) placed in it and the lower part (6) with magnet core (2) placed in it. Up-and-down rod (12) of disconnecting insert (3) is placed coaxially to the core (13) of magnet core (2) containing outer thread (17) that corresponds to inner thread at cup-shaped case (4) in the area (16) of opening.
EFFECT: development of a compact-size automatic circuit breaker placed in the common safe case.
10 cl, 1 dwg
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