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MCBs (miniature circuit breakers) protect electrical circuits against overload and short circuit faults. They are used in consumer units, distribution boards, and three-phase installations to disconnect power automatically when current rises beyond a safe level.
This collection includes Type B MCBs for standard circuits, Type C MCBs for circuits with higher inrush current, and selected specialist options for more demanding applications. Whether you’re replacing a single breaker or specifying a full board, this is the main hub for our MCB range.
Quick answer: An MCB is a resettable circuit breaker that protects wiring and connected equipment from overload and short circuit faults. The right MCB depends on the circuit rating, fault level, and whether you need a B curve, C curve, or more specialist trip characteristic.
MCBs are one of the most common circuit protection devices used in UK electrical installations. They are fitted across consumer units, three-phase boards, and enclosure-based builds to provide fast disconnection under fault conditions while remaining easy to reset once the issue is resolved.
Need earth leakage protection as well? Browse our RCBO range. For delivery and returns, see our delivery information and returns policy.
Pre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping. The WMCUSP440C is a complete 3 phase...
The WMC106B is a 6A single-pole 6kA Miniature Circuit Breaker (MCB) designed to provide reliable overcurrent and short-circuit protection on domestic and light-commercial lighting...
The WCED WKC Series 10kA Miniature Circuit Breakers (MCBs) are high-performance devices designed for precise overcurrent detection and short-circuit protection. Built to handle demanding...
Pre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping. The WME08/HP40C 8 Way Heat Pump Consumer...
The WMC120B is a robust 20 A single-pole 6 kA Miniature Circuit Breaker (MCB) providing accurate overcurrent and short-circuit protection for socket and radial...
The WKT280B is an 80A B Curve 2 Pole twin screw terminal MCB designed specifically for use with meter isolation and enclosure setups, particularly...
The WMC132C is a 32 A single-pole 6 kA Miniature Circuit Breaker (MCB) built for high-load circuits with moderate to high inrush current -...
The WMC132B is a 32 A single-pole 6 kA Miniature Circuit Breaker (MCB) engineered for high-load domestic and light-commercial circuits such as cookers, immersion...
Pre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping. The WMCUSP463C is a ready-to-fit 3-Phase Surge...
The WMC125C is a 25A single-pole 6kA miniature circuit breaker with a C Curve tripping characteristic. It provides overload and short-circuit protection for circuits...
The WCED WKC Series 10kA Miniature Circuit Breakers (MCBs) are high-performance devices designed for precise overcurrent detection and short-circuit protection. Built to handle demanding...
Pre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping. The WME10/HP40R25 10 Way Heat Pump Consumer...
Select an MCB from the circuit design—not by amp rating alone. The device must coordinate with the conductor, connected load, prospective fault current and upstream protection. Confirm the required trip curve, pole format and breaking capacity before ordering.
Commonly used where normal inrush current is relatively low, including many lighting, socket and general-purpose circuits. Suitability still depends on the design calculations.
Allow a higher instantaneous trip threshold than B curve devices and are often considered for loads with greater starting current, subject to the required disconnection times.
Choose single-, two-, three- or four-pole formats for the supply and isolation requirement, then verify whether a 6kA, 10kA or other rated breaking capacity is needed.
Circuit Protection6kA MCBs10kA MCBsRCBOsThree Phase
Trade support: UK-stocked products, manufacturer-backed specifications and fast dispatch. Check each product page for ratings, standards, stock status and delivery details before ordering.
$132.00 ex VAT
VAT: Product prices exclude VAT. VAT is added at checkout.
