32A RCBOs for EV, Heat Pump & High-Load Circuits
32A RCBOs are designed for higher-load circuits that require combined overcurrent and earth leakage protection in a single device. They are widely used for EV charger feeds, heat pumps, showers, cooking appliances and small commercial equipment where dependable fault protection and accurate disconnection times are essential.
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These RCBOs provide full Type A sensitivity, detecting both AC and pulsed DC leakage — a requirement for modern inverter-driven loads. They are available in both B-curve and C-curve options, allowing installers to match the protective device to the inrush characteristics of the connected equipment.
- 32A rating for higher-load domestic and light commercial circuits
- Type A protection for AC + pulsed DC fault detection
- B & C curve variants for standard or high-inrush applications
- Single-module designs for tidy consumer unit layouts
- Switched neutral options for improved testing and isolation
Whether used in new installations or retrofit upgrades, 32A RCBOs provide stable, compliant protection for circuits that routinely carry higher continuous loads or experience occasional surge currents.
Arc Fault Detection A-Type RCBO – WFD132B-030 (32A, B Curve, 30mA)
£103.40
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 overload protection in one compact unit. Fully compliant with BS 7671:2018 (18th Edition), it offers a reliable fire-safe solution for demanding...
What Are 32A RCBOs Used For?
A 32A RCBO is the standard choice for dedicated high-load circuits. It delivers both overload and earth leakage protection while supporting equipment that draws more current than typical domestic outlets or lighting circuits.
Common Applications
- EV charger feeds requiring a stable 32A supply
- Heat pumps and other inverter-driven heating systems
- Electric showers and high-power bathroom equipment
- Cookers, induction hobs and heavy kitchen appliances
- Workshop tools with constant or surge-prone loads
B Curve vs C Curve 32A RCBOs
B Curve: Suitable for standard domestic circuits and predictable load behaviour.
C Curve: Better for circuits with motors, compressors or tools that cause high inrush currents on startup.
Selecting the correct curve prevents nuisance tripping and ensures the RCBO operates in line with its designed characteristics.
Compliance & Standards
All 32A RCBOs in this category meet BS 7671 (18th Edition) requirements and comply with IEC/EN 61009. Type A detection ensures proper protection for modern appliances, heat pumps, EV chargers and other equipment that may introduce pulsed DC into the circuit.
Why Installers Choose 32A RCBOs
They offer clean separation of circuits, easier fault diagnosis and full compliance with modern consumer unit layouts. Compact module sizes, switched neutrals and stable disconnection performance make them the preferred choice for any higher-load dedicated circuit.