Plug-in circuit breaker

Abstract

The invention discloses a plug-in circuit breaker, which comprises an outer shell (1), a wire incoming mechanism (2), a wire outgoing mechanism (3), an operating mechanism (4), an arc extinguishing mechanism (5), a short-circuit protection mechanism (6), and an overload protection mechanism (7), and is characterized in that: a button mechanism (8) is connected to the upper part of the operating mechanism (4), the button mechanism (8) is installed in an installation groove (101) at the top end of the outer shell (1), the wire outgoing mechanism (3) is installed in an wire outgoing mechanism installation groove (102) at the top end of the outer shell (1), the wire outgoing mechanism (3) is positioned on the left side of the button mechanism (8), the arc extinguishing mechanism (5) is positioned below the operating mechanism (4), the short-circuit protection mechanism (6) is installed below the wire outgoing mechanism (3) and positioned on the left side of the operating mechanism (4), and the overload protection mechanism (7) and the operating mechanism (4) are positioned on the right side of the arc extinguishing mechanism (5) for carrying out overload protection on the circuit breaker. The plug-in circuit breaker can satisfy the requirements that the space occupied by the circuit breaker in an AC circuit is narrow, especially the direction of force applied by a wiring operation end must be consistent with the wire incoming direction, shortens the size of the circuit breaker, and saves the installation cost of the circuit breaker.

Description

technical field [0001] The invention belongs to the field of low-voltage electrical appliances, and in particular relates to a plug-in circuit breaker for direct current circuits. Background technique [0002] Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. Low-voltage circuit breaker, also known as automatic switch, is an electrical appliance that not only has the function of manual switch, but also can automatically protect against voltage loss, undervoltage, overload, and short circuit. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, etc., and can automatically cut off the circuit when they have severe overload, short circuit and undervoltage faults. Its function is equivalent to a fuse switch and The combination of overheating and underheating relays, etc., and generally does not need to change parts after breaking the f...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical defects that the existing circuit breaker mentioned in the above background technology is installed in a specific narrow space and needs to re-layout the external connecting wires and copper bars, which takes up a lot of space and high switching costs.

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