Basic load switches consist of four pins: input voltage, output voltage, enable and ground. When the device is enabled via the ON pin, the pass FET turns on, thereby allowing current to flow from the input pin to the output pin, and power is passed to the downstream circuitry. A distribution box is a low-voltage electrical enclosure that receives incoming power and distributes it safely to multiple outgoing circuits through protective and switching devices such as MCBs, RCDs, RCBOs, fuses, isolators, busbars, neutral bars, earth bars, and surge protective devices. They are ideally suited for applications in building-site power distributions, grid and grid back-up feed s telecommunications, hospitals, airports, railroad systems and transport service ith dual switch. This guide covers split load vs dual RCD vs RCBO board configurations, circuit arrangement and allocation, BS 7671 labelling requirements, type testing under BS EN 61439, SPD installation, wiring best practice, and the common mistakes found during EICR inspections. Written and reviewed by Andrew. Solve your design challenges with our broad portfolio of load switches which includes extensive current, package and timing options. Unlike circuit breakers, LBS units cannot interrupt fault currents on their own. They typically work in conjunction with high-voltage fuses.
