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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.
The WCED WKC4100C is a 4 Pole 100A MCB with a C curve tripping characteristic and a 10kA breaking capacity. Designed for high-demand installations,...
The WCED WARB5100C is a 5 Pole 100A Auto Resetting MCB designed for advanced three-phase systems where neutral and earth monitoring is required. It...
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...
The WMC116C is a 16 A single-pole 6 kA Miniature Circuit Breaker (MCB) engineered for radial and socket circuits subject to higher inrush currents...
The WMC116B is a 16 A single-pole 6 kA Miniature Circuit Breaker (MCB) designed for socket and small-power radial circuits. It combines dependable overcurrent...
The WKC216B is a 16A 2 Pole 10kA Miniature Circuit Breaker (MCB) designed for dependable short-circuit and overload protection in small power and lighting...
Pre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping. The WME12/HP40C 12 Way Heat Pump Consumer...
The WCED WARB3100C is a 3 Pole 100A Auto Resetting MCB designed for advanced circuit protection where uptime is critical. Unlike a standard MCB,...
The WMC120C is a 20 A single-pole 6 kA Miniature Circuit Breaker (MCB) designed for radial and equipment circuits subject to moderate inrush currents...
The WKC320C 3 Pole 10kA MCB is a 20A C Curve breaker built to safeguard three-phase circuits against overload and short-circuit faults. With a...
The WKC406B is a 6A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral circuits. With a B Curve trip characteristic,...
The WKC280B is an 80A 2 Pole 10kA Miniature Circuit Breaker (MCB) designed to provide dependable overload and short-circuit protection for high-load single-phase circuits,...
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.
