Plug-in circuit breaker
Through the driving cooperation of the locking member and the button mechanism, the plug-in circuit breaker is automatically opened in the closed state, solving the risk of live operation and improving safety and reliability.
CN111489924BActive Publication Date: 2025-08-05ZHEJIANG CHINT ELECTRIC CO LTD
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Patent Information
- Application Number
- CN201911121700.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-11-15
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2039-11-15
AI Technical Summary
Technical Problem
The existing plug-in circuit breakers are prone to risk of live operation due to excessive insertion or pull-out force in the closed state, and the reliability of the locking device is insufficient.
Method used
The drive cooperation between the locking member and the button mechanism is adopted, and the locking boss of the locking member extends out or retracts back into the housing. The drive button mechanism automatically opens, avoids live operation, and automatically opens when inserted in the closed state.
Benefits of technology
Improves the safety and reliability of the plug-in circuit breaker, ensuring that the circuit breaker cannot be operated incorrectly in the closed state, and only allows closing action in the correct installation position.
✦ Generated by Eureka AI based on patent content.
Abstract
A circuit breaker includes a housing, a button mechanism, and an operating mechanism. The button mechanism drives the operating mechanism to perform closing / opening. The button mechanism has a closing position and an opening position corresponding to the closing / opening state of the circuit breaker. A limiting hole is provided on the housing. The circuit breaker further includes a locking member disposed inside the housing. The locking member is provided with a locking boss corresponding to the limiting hole. When the button mechanism is in the closing position, the locking boss of the locking member extends outside the housing. When a retracting pressure is applied to the locking member to retract the locking boss into the housing, the locking member drives the button mechanism to drive the operating mechanism to open. When the closed circuit breaker is inserted into the cabinet, the circuit breaker is forced to open automatically, avoiding live operation and improving safety.
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