4.9 Based on 1181 reviews 
Description
⚡ RCBO 40A Type A for FuseBox – B-Curve, 30mA
FuseBox RTA064030B – High-performance protection for cookers, showers, and fixed appliances
The RCBO 40A Type A for FuseBox delivers reliable, fast, and regulation-compliant protection for demanding domestic circuits. It combines both overcurrent and residual current protection in one single module, ideal for modern FuseBox consumer units. Use it for electric showers, high-power ovens, or any fixed appliance where a 40A circuit is required.
Thanks to its Type A sensitivity, it detects both AC and pulsating DC faults, offering better safety across a range of installations. If you’re upgrading from outdated fuseboards or replacing separate RCD and MCB components, this RCBO provides a modern all-in-one solution.
🔧 When to Use the RCBO 40A Type A for FuseBox
This model is ideal for:
- 9.5kW electric showers
- Standalone induction hobs or ovens
- Boiler and heating spurs (if sized correctly)
- Circuits where a 40A breaker is needed to match load and cabling
- Upgrades after EICR adjustments where safety margins are critical
👉 Which RCBO Size Should You Choose? – Get clarity with our fast, practical guide
🔑 Key Features – FuseBox RCBO
- 40A current rating – protects high-power domestic loads
- Type A fault sensitivity – detects AC and pulsed DC leakage
- B-curve trip profile – ideal for standard household loads
- 30mA RCD protection – meets modern safety standards
- 6kA breaking capacity – suitable for UK domestic installations
- Fits all FuseBox consumer units – standard size module
- 18th Edition compliant – BS EN 61009-1 approved
- Tough PA6 casing – heat-resistant and built to last
- Clear labelling and solid terminals – designed for fast installation
🧭 Explore More Safety Options for Earth Leakage and Overload Protection
Looking at other current ratings or building a board from scratch?
👉 Browse all residual current devices with overcurrent protection — from lighting to fixed high-load appliances
👉 View the complete FuseBox product range — breakers, accessories, and more
👉 Shop FuseBox consumer units — ideal match for this RCBO’s specs
👉 Not quite this size? Try the 32A RCBO FuseBox for ring mains
👉 Need more capacity? Explore the 45A RCBO model for larger appliances
