Plug-in circuit breaker

Abstract

A circuit breaker comprises a housing, a button mechanism and an operating mechanism. The button mechanism drives the operating mechanism to execute closing / opening; the button mechanism is provided with a closing position and an opening position corresponding to the closing / opening state of the circuit breaker; and a limiting hole is formed in the housing. The circuit breaker further comprises alocking piece arranged in the housing. The locking piece is provided with a locking boss corresponding to the limiting hole. When the button mechanism is located at the closing position, the locking boss of the locking piece extends out of the housing and applies retraction pressure to the locking piece to enable the locking boss to retract back into the housing, and the locking piece drives the button mechanism to drive the operating mechanism to be opened; and when the closed circuit breaker is inserted into the cabinet body, the circuit breaker is forced to be opened automatically, so thathot-line work is avoided, and safety is improved.

Description

technical field [0001] The invention relates to the technical field of low-voltage terminal appliances, in particular to a plug-in circuit breaker. Background technique [0002] With the rapid development of network communication technology, especially the popularization of 5G network applications, the requirements for circuit breakers to effectively improve the safety of electrical equipment are getting higher and higher. The traditional power supply method of using a terminal circuit breaker to connect many sockets and plugboards , has been far from meeting the requirements of safe electricity use and equipment protection. For example, terminal circuit breakers for 5G communication equipment not only need to be upgraded in terms of miniaturization, intelligence, reliability, and stability, but also are still in use. Many new matching structures have been developed on the Internet, for example, it is required that the circuit breaker can be plugged in as easily as a plug an...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of network communication technology, especially the popularization of 5G network applications, the requirements for circuit breakers to effectively improve the safety of electrical equipment are getting higher and higher. The traditional power supply method of using a terminal circuit breaker to connect many sockets and plugboards , has been far from meeting the requirements of safe electricity use and equipment protection. For example, terminal circuit breakers for 5G communication equipment not only need to be upgraded in terms of miniaturization, intelligence, reliability, and stability, but also are still in use. Many new matching structures have been developed on the Internet, for example, it is required that the circuit breaker can be plugged in as easily as a plug and can be locked in the installation position. This type of new circuit breaker is called a plug-in circuit breaker. The new plug-in circuit breaker It can not only provide various safety protection performances of circuit breakers for power lines and electrical equipment, but also meet the needs of different electrical equipment for power quality, and enable the circuit breaker to be easily installed by plugging and unplugging. entry / exit circuit

[0003] The existing plug-in circuit breaker is usually provided with a locking device, and the locking protrusion of the locking device extends out of the circuit breaker housing when the circuit breaker is in the closed state, preventing the circuit breaker from being inserted or pulled out in the closed state. The sheet metal structure of the installation cabinet of the circuit breaker has a certain degree of elasticity. If the insertion or withdrawal force is large, it may still cause the circuit breaker to be inserted or pulled out of the installation cabinet in the closed state, and there is a risk of live operation.

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