The fundamental difference between isolation switch and load switch

2023-04-17 17:48:48

Let's talk about High-voltage isolation switches first! The structure of high-voltage isolation switch is simplified, and it can be used to isolate high-voltage power supply to ensure the safety inspection of other equipment. But it does not have a unique arc extinguishing configuration, so it is not allowed to operate with load. Now let's talk about the high-voltage Load switch! High voltage load switch is equipped with an arc-extinguishing device, so it can cut off both a specific load current and an overload current. But it must be used together with high-voltage Fuses to eliminate short-circuit faults with the power of the fuses.

High voltage isolation switch is mainly used to cut off circuits without load current and isolate power supply. In the case of disconnection, there are obvious cut-off points for safety monitoring of other electrical facilities. Under closed conditions, normal load current and short-circuit fault current can be reliably used. Because there is no specialized arc extinguishing configuration, it cannot be started, so it can be only operated when the circuit has been cut off by the circuit breaker. Remember not to work with a load to avoid personal danger. And load switch is a type of switch electrical device that isolates and break the circuit , with a simple arc extinguishing configuration, which can disconnect a certain load current and current, but it cannot disconnect the short-circuit current.

The fundamental difference between them is whether each household device can automatically trip the load through a thermal-release device when under load.