A complete range of modular circuit protection devices for residential, commercial and industrial distribution systems.
Compare model purpose, core specifications and application fit, then continue to the detailed purchasing information.
Entry breaking capacity for domestic and light-commercial final circuits, where the prospective fault current at the board stays low. Same modular format and same B/C/D curve choice as the 6kA and 10kA ranges.
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The 6kA range covers most residential and light-commercial work, and it carries the widest certificate coverage of the four MCB series — CB, SEMKO, CE and UKCA are all held against it.
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Where fault levels run higher — commercial boards, supplies close to the transformer — this is the 10kA version of the same modular format, with a 20,000-operation mechanical life.
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Higher-current MCBs for incomer and sub-main duty at 80A and 100A. Rated 240/415V rather than the 230/400V used across the 6–63A ranges, and available on B, C and D characteristics.
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Where the other MCB series stop at 100A, this one starts at 80A and runs to 125A on a 10kA breaking capacity — the range used on incomers and sub-main circuits rather than final circuits.
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Type A residual-current protection covering 25A to 100A. It responds to pulsating DC components as well as sinusoidal AC, which is why the catalogue positions it for individual EV charge points where the vehicle being charged is unknown.
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Type B protection detects smooth DC residual current, which ordinary AC and Type A devices cannot. That matters wherever an installation contains PV inverters, frequency converters or DC-side EV charging — the fault current there is not necessarily alternating.
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Time-delayed Type A device for the upstream position. Delaying the trip lets a downstream RCD clear its own fault first, so one earth fault does not take out the whole installation.
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Residual-current protection without overcurrent protection, covering 16A to 63A in 1P+N and 3P+N, with 30, 100 and 300mA sensitivities and both Type A and Type AC detection.
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Overload, short-circuit and earth-fault protection for one final circuit in a single module. The handle takes a padlock, so a circuit can be locked off for work without pulling the device.
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An electromagnetic tripping system rather than an electronic one, so operation does not depend on the supply voltage being present. Available on C and D characteristics at 10kA.
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MCB-sized RCBO with switched neutral as standard. Isolating the neutral with the line means only the faulty circuit is taken out of service, which shortens installation and periodic testing.
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Arc fault detection on top of a full RCBO: overload, short circuit and residual current in the usual single module, plus the series arcing that none of those three responds to — the fault behind a damaged cable or a loose terminal.
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Type B residual-current detection and overcurrent protection in one single-module body, for circuits where smooth DC residual current can occur — EV charge points and PV-connected installations — and board width is still limited.
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The three-phase member of the RCBO range: 3P+N, up to 63A and 10kA, with an electromagnetic residual-current mechanism that does not depend on the supply voltage to trip.
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A 1P+N electromagnetic RCBO up to 40A on a 6kA capacity — the same voltage-independent tripping as the WRCM, in the smaller frame and lower breaking capacity that residential boards normally call for.
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Two switches on one double-module body, so the residual-current and overcurrent halves can be operated separately — useful when a fault has to be isolated without dropping the whole circuit.
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Incomer isolation at 100A or 125A in one to four poles. CB, SEMKO, CE and UKCA certificates are held against this range.
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Same 100A/125A duty as the WSM-125, but with a double wiring terminal — useful where an outgoing tail has to be taken off the incomer without a separate connector block.
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A 100A-only isolator range in one to four poles, for boards where the incomer is fixed at 100A and the wider 125A selection is not needed.
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Three-pole 250A isolation for the top end of the range — commercial boards and sub-mains where a modular 125A incomer is no longer enough.
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The same 6kA rating and 6–63A range as the DIN-rail series, in a plug-in body that mounts onto a fixed base rather than clipping to a rail.
View specifications →Circuit Breakers (MCB) — CB · SEMKO · CE · UKCA. View the issued documents and request the certificate number and covered-model schedule.
