Main Breaker: This is the switch that controls the flow of electricity from the main panel to the sub panel. These smaller breaker panels, also known as sub-distribution boards, are commonly used to provide power to secondary circuits within a building. From there, it is routed to individual building distribution boxes (secondary distribution boxes), which subsequently supply power to unit-level distribution boxes. Class I distribution box: the construction power distribution cabinet is used for construction power on the construction site. It is specially designed for the special situation of the project construction site and meets the relevant construction power specifications and standards of the. A distribution board (also known as panelboard, circuit breaker panel, breaker panel, circuit breaker, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit.
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