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When it comes to the intelligent circuit breaker in China, the development and current situation of the low-voltage circuit breaker in China have to be mentioned. Low-voltage circuit breaker is one of the most complex low-voltage electrical appliances, the highest technical content and economic value, and the most important products in low-voltage distribution system.

The first difference between the load break switch and the isolation switch is that the load switch has an arc extinguishing device, and the isolation switch does not have such a device, so what is the difference between having this arc extinguishing device? The so-called arc extinguishing device is to be able to better help to switch the electrical disconnect and closure, but also to effectively limit the arc, to help the arc out. There is such a kind of arc extinguishing device, the switch electrical is more safe. So most of the switchgear inside is by the arc extinguishing device. Especially for household switching appliances.

The arc extinguishing of AC contactor is easier than that of DC contactor because of the existence of zero crossing automatic arc extinguishing of AC current.

The main components of VS1 vacuum circuit breaker are: operating mechanism, vacuum arc extinguishing chamber, handcart type with a chassis car. And the operating mechanism is one of the main parts. So how should we maintain the VS1 vacuum circuit breaker operating mechanism in daily life?