One Of The Core Functions Of Low-voltage Pole-mounted Circuit Breakers Is: Segmentation, Segment Selection, And Isolation Of Fault Areas.

When a short circuit or line fault occurs in a section, the Lv Pole Mounted Circuit Breakers can quickly disconnect the faulty line. System control or local operation signals trigger its tripping mechanism, causing the arc to be quickly extinguished by the arc-extinguishing device and the circuit to open. The internal metal contacts of the low-voltage pole-mounted circuit breaker separate, preventing the fault current from continuing to flow.

This action isolates the faulty area from the rest of the power supply network. The result is an instantaneous interruption of the abnormal current's impact on other areas, preventing the fault from spreading. The low-voltage pole-mounted circuit breaker is positioned between overhead lines, enabling targeted disconnection of the faulty section, thereby limiting the impact area to a minimum.