Pilmagnetic switch – the role of a load switch

Create Date: 2024-8-30 12:03:23|Source: PILZ/PILZ

1. Breaking and closing. Because it has a certain arc extinguishing ability, it can be used to break and close the load current and the overload current of a certain multiple (usually 3-4 times) of the small stem; It can also be used to open and close no-load transformers, longer no-load lines, and sometimes to open and close large capacitor banks with larger capacitance than disconnectors allow.

2. Substitution. The combination of load switch and current limiting fuse in series can be used instead of circuit breaker. That is, the load switch bears the overload current of breaking and closing less than a certain multiple, and the current-limiting fuse bears the breaking of larger overload current and short-circuit current.

3. The load switch and the current limiting fuse are combined in series to form an integrated load switch, which is called "load switch-fuse combination appliance" in the national standard. The fuse can be installed on the power side of the load switch or on the power receiving side of the load switch. When it is not necessary to change the fuse frequently, it is advisable to adopt the former arrangement, so that the load switch doubles as an isolation switch, and it is used to isolate the voltage applied to the current-limiting fuse.
Pilmagnetic switch – the role of a load switch

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