Fusebox F3 Series 21 Way Consumer Unit 100A, with SPD - F3021MZ

The FuseBox F3021MZ is a 21-way RCBO consumer unit from the F3 Series, designed to deliver reliable and modern electrical protection for residential and light commercial installations. It features a 100A main switch isolator and a factory-fitted Type 2 surge protection device (SPD), offering enhanced safety against voltage spikes and electrical surges. With its sleek, curved design and powder-coated metal enclosure, it blends seamlessly into any setting while meeting the latest 18th Edition wiring regulations.

This unit is engineered for ease of installation, with a removable and raised DIN rail, top-mounted earth and neutral bars, and round knockouts on all sides. Two large rectangular knockouts at the rear provide additional flexibility for cable entry. The SPD connects directly to the busbar, eliminating the need for a separate MCB and freeing up an extra usable way. Captive front cover screws and an upgraded reinforced grommet strip are also included for added convenience and safety.

Ideal for full RCBO configurations, the F3021MZ supports both reduced and standard height RCBOs, making it a versatile choice for electricians. Whether you're upgrading an existing system or installing a new one, this consumer unit offers a dependable and future-ready solution for safeguarding your electrical circuits.