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B Curve RCBOs are designed for standard domestic and light commercial circuits where inrush currents are low and predictable. They provide combined overcurrent and earth leakage protection in a single device, making them the preferred choice for modern boards where every circuit requires its own dedicated protection.
These RCBOs trip within the B-curve range, meaning they respond quickly to fault currents that reach three to five times the rated current. This makes them ideal for lighting circuits, ring finals, small power circuits and general domestic loads. Most models include a switched neutral and are suitable for both new installs and retrofit upgrades.
Installers choose B curve RCBOs for clean circuit separation, reduced nuisance tripping and simpler periodic inspection. All product dimensions and ratings are provided within the individual listings.
The WFD140B-030 is a 40A, B Curve Arc Fault Detection (AFDD) RCBO, designed to deliver maximum protection against arc faults, earth leakage, overload, and...
The WFD132B-030 is a 32A, B Curve Arc Fault Detection (AFDD) RCBO, combining arc fault detection, 30mA Type A residual current protection, short-circuit, and...
The WFD120B-030 is a 20A, B Curve Arc Fault Detection (AFDD) RCBO, combining arc fault detection, 30mA Type A residual current protection, short-circuit, and...
The WFD116B-030 is a 16A, B Curve Arc Fault Detection (AFDD) RCBO, providing arc fault detection, residual current protection (30mA), short-circuit, and overload protection...
The WFD110B-030 is a 10A, B Curve Arc Fault Detection (AFDD) RCBO, combining arc fault detection, residual current protection (30mA), short-circuit, and overload protection...
The WFD106B-030 is a 6A, B Curve Arc Fault Detection (AFDD) RCBO, combining arc fault detection, residual current protection (30mA), short-circuit, and overload protection...
The WRT150B-030 is a 50A B Curve Type A RCBO designed for high load domestic and commercial circuits. It combines overcurrent and 30mA residual...
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 WRB110B-030 High Immunity Type A Mini RCBO is a compact 10A B Curve protective device designed for domestic and commercial boards where space...
A B curve RCBO combines residual-current protection with an overcurrent characteristic normally suited to relatively low-inrush loads. The correct device still depends on the circuit rating, conductor capacity, fault-loop conditions, RCD type and connected equipment.
Available across common final-circuit ratings for suitable modern domestic and light-commercial loads.
Single-module options can preserve board space, but their terminals and busbar arrangement must suit the consumer unit.
Designed for suitable circuits affected by transient noise or accumulated leakage. Genuine faults should be investigated before changing device type.
C Curve RCBOsType A RCBOsMini Type A RCBOs10kA RCBOsRCBOs
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.
