Type A RCBO – 40A B Curve, 30mA
The WCED WRT140B-030 is a 40A B Curve Type A RCBO with 30mA residual current sensitivity and a 10kA breaking capacity. It combines overload,...
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Shop circuit protection devices for domestic, commercial and specialist installations, including MCBs, RCDs, RCBOs and surge protection. Use the filters to narrow the range by device type, rating and application.
Device selection depends on the circuit design, load characteristics, prospective fault current, required residual-current response and the equipment manufacturer’s instructions.
Quick guide: MCBs provide overcurrent protection; RCDs respond to residual current; RCBOs combine both functions for individual circuits. RCD type, trip curve, current rating and breaking capacity must be selected for the installation.
The WCED WRT140B-030 is a 40A B Curve Type A RCBO with 30mA residual current sensitivity and a 10kA breaking capacity. It combines overload,...
The WAR2100-030 is a 2 pole, 100A Type A RCD with high immunity, designed for heavy-duty single-phase applications where maximum current handling and nuisance-trip...
The WAR280-030 is a 2 pole, 80A Type A RCD with high immunity, providing robust residual current protection for single-phase circuits with higher load...
The WAR4100-030 is a 4 pole, 100A Type A RCD with high immunity, designed for heavy-duty three-phase applications where maximum load capacity and nuisance-trip...
The WAR480-030 is a 4 pole, 80A Type A RCD with high immunity, designed for demanding three-phase applications where nuisance tripping must be avoided....
The WMEPME10/SP is a metal PME fault detection consumer unit that WCED lists as a 40A C Curve model with a kWh meter. Energy...
The WMEPME06/C40 is the 40A C Curve RCBO version of the metal PME fault detection consumer unit. It provides a compact board option for...
The WARTD4100-100 A-Type 100mA Time Delay RCD is a 4 Pole S-Type device rated at 100A for large-scale three-phase boards. Designed for upstream use,...
The WARTD480-100 A-Type 100mA Time Delay RCD is a 4 Pole S-Type device rated at 80A, designed for selective upstream protection. Its built-in delay...
The WARTD280-100 A-Type 100mA Time Delay RCD is a 2 Pole S-Type device rated at 80A. Designed for upstream use in selective coordination systems,...
The WRB125B-030 High Immunity Type A Mini RCBO is a 25A B Curve protective device that combines overload, short-circuit, and residual current protection in...
The WRB140C-030 High Immunity Type A Mini RCBO is a 40A C Curve protective device designed for circuits with motors, pumps, and equipment that...
Start with the circuit design and connected equipment—not a device label in isolation. The protective device must suit the load, conductor capacity, earthing arrangement, prospective fault current and any residual-current characteristics identified by the equipment manufacturer. Installation and verification should be completed by a competent electrical professional to the applicable edition of BS 7671.
Miniature circuit breakers provide protection against overload and short-circuit current. Select the current rating, trip curve and breaking capacity from the installation design and load characteristics.
Residual current devices disconnect when the monitored current imbalance reaches their operating threshold. The correct type and sensitivity depend on the application and expected residual-current waveform.
RCBOs combine overcurrent and residual-current protection in one device. Per-circuit protection can improve fault discrimination and limit disruption elsewhere in the installation.
Surge ProtectionHigh Immunity RCBOsType B RCDsArc Fault DetectionElectrical Enclosures
Trade support: UK-stocked products, manufacturer-backed specifications and fast dispatch. Check each product page for standards, ratings, stock status and delivery details before ordering.