An Improved Circuit Breaker

A circuit breaker and circuit protection technology, which is applied to circuit breaker components, circuit breaker contacts, protection switch operation/release mechanisms, etc., can solve the problems of inapplicability, poor versatility, and increased disconnection force, and achieve simple structure , easy installation and wide versatility
CN101677049BActive Publication Date: 2011-12-28KEDU ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
KEDU ELECTRIC CO LTD
Publication Date
2011-12-28

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Abstract

The invention relates to an improved circuit breaker, which includes a housing, a circuit protection action mechanism located in the housing, matching moving contacts and static contacts, and an arc extinguishing device, and also includes a tripping mechanism. The tripping mechanism includes a tripping mechanism. The buckle rotor, the driving part that drives the trip rotor to rotate, the movable contact is set on the trip rotor; the trip rotor is provided with a buckle mechanism, and the driving part cooperates with the buckle mechanism to control the snap-in or disengagement of the buckle mechanism , The circuit protection action mechanism cooperates with the buckle mechanism to drive the buckle mechanism to disengage. The design of the buckle structure of the present invention separates the disengagement force from the contact pressure. No matter how much the contact pressure is, the disengagement force will never become larger, so that the pressure between the contacts can meet the needs of the circuit breaker in circuits with different currents. The requirements of the environment, the release force of the tripping mechanism will not change, the sensitivity of the circuit breaker will not be affected, the versatility of the circuit breaker is wider, and the entire circuit breaker is easy to install and simple in structure.
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Description

technical field

[0001] The invention relates to a circuit breaker which provides overload and short-circuit protection for electrical circuits and electrical equipment, in particular to an improved circuit breaker. Background technique

[0002] At present, there are various types of circuit breakers with different working principles. One type of circuit breaker uses circuit protection mechanisms such as short-circuit current relays and bimetallic strips and a tripping mechanism that cooperates with these protection mechanisms, and sets the movable contact on the tripping mechanism to monitor the circuit through the circuit protection mechanism. In case of overload, short circuit, etc., the corresponding action is used to drive the tripping mechanism to separate the moving contact from the static contact to realize the disconnection protection of the circuit.

[0003] In this type of circuit breaker, the key points of the scheme mainly focus on the linkage and cooperation re...

Claims

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