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Pole-mounted circuit breaker
Primary and Secondary Integrated Pole-Mounted Circuit Breaker (Pole-Type)
A pole-mounted circuit breaker refers to a design in which each pole of the circuit breaker is mounted on an independent support structure. This design results in a relatively simple circuit breaker structure, allowing each breaker unit on its respective pole to operate independently. The advantages of pole-mounted circuit breakers include flexible installation—allowing the number of breaker units to be increased or decreased as needed. Additionally, maintenance of pole-mounted circuit breakers is relatively straightforward, since each unit is independent and can be inspected and repaired individually.
Primary and Secondary Integrated Pole-Mounted Circuit Breaker (Enclosed Type)
A common-cabinet circuit breaker typically refers to a design in which multiple circuit-breaker units are integrated into a single shared cabinet. This design saves space and simplifies installation and maintenance. The structure of a common-cabinet circuit breaker is relatively complex, as it must accommodate several circuit-breaker units within the same cabinet while ensuring electrical isolation and thermal management between these units. Common-cabinet circuit breakers are often used in applications that require multiple circuit-breaker units to work together, such as substations or large-scale industrial facilities².