China L7-63 Triangle L7 Miniature Circuit Breaker Manufacturer, Supplier, Factory

I guess everyone has heard of air circuit breaker. So, why is the air circuit breaker called an air circuit breaker? What does it have to do with air? To understand this problem, you must first understand the classification of air circuit breakers and their working principles.

Plastic case circuit breaker (using plastic insulator as the shell of the device) is also called a plastic case circuit breaker. It is suitable for use as a protection switch for branch circuits and can automatically cut off the current after the current exceeds the trip setting.

A Reclosing circuit breaker(smart circuit breaker) is a type of automatic switching device used in power distribution systems to interrupt fault currents and restore power to unaffected portions of the network. However, an Electronic Circuit Breaker (ECB) is a more modern and sophisticated type of circuit breaker that uses electronic components for control and protection functions.

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.

There are actually three main tripping methods for air circuit breakers. The first is electromagnetic tripping. The second type is thermal trip. The third type is compound tripping.

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.