Description：

Outdoor 126kV High-voltage AC  Dead tank SF6 circuit breaker is an outdoor - installed, three - pole, 50Hz AC high - voltage switching device that uses SF6 gas as the arc - extinguishing and insulating medium. It can be used to interrupt and close rated current and fault current, interrupt and close capacitor banks, transfer circuits, and also be used as a tie - circuit breaker to achieve the control and protection of power transmission and transformation lines and equipment. It is especially suitable for frequent operations. The circuit breaker is equipped with a spring operating mechanism.

Main Features：

The material of the contact end is copper - tungsten alloy, which has strong arc - resistance ability. Especially during the opening and closing process of the circuit breaker, an arc will be generated, and a large amount of energy acts on the arcing contacts. Therefore, the ablation - resistant material is an important guarantee for the electrical life. The large and small nozzles are made of polytetrafluoroethylene material with excellent high - temperature and arc - resistance properties and appropriate fillers.

Technical specifications：