1. 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.
2. The difference between the load switch and the isolation switch The second difference is that the current cut by the two is not the same. Because the isolation switch has no arc extinguishing device, it is only suitable for cutting off the current without load, unable to cut off the load current, short circuit current, so the isolation switch can only operate safely when the circuit is safely disconnected, and it is strict with the load operation, so as not to cause safety accidents. Load switch because of the arc extinguishing device, so can overload current and rated load current, but also can not cut off the short circuit current.
3. Load switch and isolation switch have different functions. Because there is no arc extinguishing device, the isolation switch can only be applied to the high-voltage circuit device in the need of live part and the need to outage part of an isolation role, in order to ensure the maintenance and inspection of high-voltage circuit personnel, to ensure the safety of personnel. The load switch is applied to fixed high voltage equipment, which can cut off the fault current and rated current in high voltage equipment, so the roles of the two are different, but both are applied to high voltage equipment.
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