Miniature circuit breaker with small size and metering function

Abstract

The utility model discloses a miniature circuit breaker with a small size and a metering function, which belongs to the technical field of circuit breakers, the current of a shell frame of the miniature circuit breaker is 125A, the miniature circuit breaker comprises a control unit and a plurality of monopoles, the width of each monopole is 18mm, each monopole is internally provided with a clapper-type electromagnetic system, a double-contact structure, a copper bar, a contact and a tunnel reluctance mutual inductor, one end of the copper bar is connected with the wiring terminal, the other end of the copper bar is connected with the clapper-type electromagnetic system, the tunnel magnetic resistance mutual inductor is arranged on the lower portion of the side, close to the wiring terminal, of the copper bar, the contact is arranged on one side of the clapper-type electromagnetic system, and the double-contact structure is connected with the switch knob in a transmission mode. According to the utility model, the monopole width size is reduced, and the installation space is saved; and the tunnel reluctance mutual inductor is integrally added, so that the product metering precision is improved, and the product function and the use experience are optimized.

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