A leakage module of a circuit breaker and a circuit breaker

Abstract

The invention relates to the technical field of circuit breakers, in particular to a leakage module of a circuit breaker and a circuit breaker, including zero-sequence transformers, neutral terminal block, Firewire terminal block, The coil assembly comprises an iron core, a bobbin, a coil, a magnetic sheet and a static contact. One end of the firewire terminal board protrudes into the zero-sequence transformer, one end of the neutral wire terminal board passes through the zero-sequence transformer, one end of the coil protrudes into the zero-sequence transformer and is connected with the firewire terminal board, and the other end of the coil is connected with the magnetic sheet. The invention directly adopts a coil to pass through a zero-sequence transformer and is directly and fixedly connected with a fire wire terminal board, the neutral wire terminal board passes through the zero sequence transformer and is connected with a leakage trip assembly in the circuit breaker, The inventionsimplifies the process of piercing the zero-sequence transformer, removes the method of piercing the soft conductor, not only saves the resources and the cost, but also makes the structure of the leakage module compact and simple, and reduces the occupying space of the zero-sequence transformer, the circuit board and the coil assembly.

Description

Technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a leakage module and a circuit breaker of a circuit breaker. Background technique [0002] Circuit breaker refers to a switching device that can close, carry and break current under normal loop conditions, and can close, carry and break current under abnormal loop conditions within a specified time. For small circuit breakers, it is extremely difficult to add the leakage function, the main reason is limited by space, especially for small circuit breakers with a width of 18mm. At present, small circuit breakers with leakage function will occupy a large space for the placement of the zero-sequence transformer and the through-the-core conductors. Soft connecting wires are used to pass through the zero-sequence transformer. Because the soft connecting wires have a certain length, the soft The winding of the connecting wire takes up a lot of space of the circuit breaker. In addi...

AI Technical Summary

Problems solved by technology

For miniature circuit breakers, it is extremely difficult to add leakage function, the main reason is limited by space, especially for miniature circuit breakers with a modulus of 18mm wide

At present, the small circuit breaker with the leakage function will occupy a large space in the placement of the zero-sequence transformer and the lead-through wire, and all use flexible connecting wires to pass through the zero-sequence transformer. Since the flexible connecting wire has a certain length, the soft connecting wire has a certain length. The tangle of connecting wires takes up a lot of space in the circuit breaker

In addition, if the leakage line, zero-sequence transformer and lead-through wire occupy too much space, the space for the arc extinguishing system of the circuit breaker will be occupied, which will affect the performance of the circuit breaker, such as breaking capacity and temperature rise electromagnetic compatibility.

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