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Circuit Protection
MCBs, RCCBs, isolators, and changeover switches to protect your electrical circuits.
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Buying guides for this range
Selection guidance written against the products on this page. Installation and testing is work for a licensed electrician.
MCB vs MCCB: what is the difference, and which do you need?
The dividing line is not size. It is current rating, fault-breaking capacity and whether the trip settings can be adjusted.
How to choose an MCB for home circuits
Rating sits between the circuit’s design current and the cable’s capacity. Curve and poles follow from the load.
RCCB explained: what it does, how it works, and which rating to specify
The device that detects current leaking to earth and disconnects before it becomes a shock or a fire.