Precautions For Installation And Maintenance Of Low Voltage Circuit Breakers
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Since Lv Pole Mounted Circuit Breakers DC current does not have the characteristic of zero crossing like AC current, it is difficult to interrupt the DC short-circuit current (even the fault current with a small multiple) and extinguish the arc. Therefore, the wiring should adopt the method of two-pole or three-pole series connection to increase the break points so that each break points bear part of the arc energy.
