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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 WER20B-030 is a 20A B Curve High Immunity Type A RCBO designed for residential and light commercial circuits including solar PV, battery storage,...
The WER40B-030 is a 40A B Curve High Immunity Type A RCBO designed for heavier duty residential and commercial circuits, including solar PV, battery...
WRB120B-030 is a 20A B Curve high immunity Type A mini RCBO designed for general-purpose domestic and commercial circuits. It combines overload, short-circuit, and...
The WRB116B-030 High Immunity Type A Mini RCBO is a 16A B Curve device designed to protect small power and lighting circuits while saving...
The WRB106B-030 High Immunity Type A Mini RCBO is a compact 6A B Curve device that combines residual current and overcurrent protection in a...
The WER32B-030 is a 32A B Curve High Immunity Type A RCBO, engineered for solar PV, battery storage, and EV-ready consumer units. It provides...
The WRB132B-030 High Immunity Type A Mini RCBO is a 32A B Curve protective device designed for medium-load circuits in residential and light commercial...
The WRT116B-030 is a 16A B Curve Type A RCBO combining residual current and overcurrent protection in one compact device. It features switched live...
The WER16B-030 is a 16A B Curve High Immunity Type A RCBO designed for solar PV, battery storage, and EV charger circuits. It provides...
The WRT120B-030 is a 20A B Curve Type A RCBO that combines overcurrent and residual current protection in a single compact device. Featuring switched...
The WRB140B-030 High Immunity Type A Mini RCBO is a 40A B Curve protective device for residential and commercial circuits requiring higher current handling....
The WRT332B-030 is a 3-pole Type A RCBO providing combined residual current and overcurrent protection for three-phase circuits. Rated at 32A with a B...
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.
