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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?

Air circuit breaker is a more complex switch, this switch function is particularly many, and manual, electric or automatic is relative to the function, that is to say, some functions are electric, some functions are manual, to Delixi Electric CDW3-1600 for example (Delixi Electric model circuit breaker using Schneider platform, From the design, process, parts quality and other links are introduced Schneider technology), the product has the following electric (automatic) functions:

Can the Moulded case replace the frame when the rated current, breaking capacity and protection are satisfied? For example, can the T7 molded case circuit breaker of ABB1600 be used in the main inlet line? If so, why is it common practice to use frames instead of Moulded cases, which are much cheaper?