A circuit breaker or disconnector
By setting a return channel on the side wall of the arc extinguishing chamber, the problem of slow pressure replenishment in the space behind the arc is solved, thus improving the high-efficiency arc extinguishing performance of the circuit breaker or disconnector.
CN224318448UActive Publication Date: 2026-06-02SHANGHAI SIEYUAN LOW VOLTAGE SWITCH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SIEYUAN LOW VOLTAGE SWITCH CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-06-02
Smart Images
Figure CN224318448U_ABST
Abstract
The application belongs to the technical field of switches, and particularly relates to a circuit breaker or disconnector, which increases a backflow channel structure on the side wall of an arc extinguishing chamber, after the circuit breaker or disconnector arcs, the arc moves upwards, the pressure above the arc extinguishing chamber increases, the pressure in the middle region of the moving and static contacts below the arc decreases, the backflow channel is used to supplement the gas in the space behind the arc with the cold gas above, the arc is inhibited from falling back, and the arc extinguishing performance of the product is improved.
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