Description
Reliable, Pre-Wired Protection for Modern Heat Pump Installations
RCD B Heat Pump Consumer Unit – 8 Module with SPD and Double Pole MCB
The RCD B Heat Pump Consumer Unit delivers efficient, compliant protection for air source and ground source heat pumps. It includes a 40A Type B RCD, a C40 double pole MCB (2-module), and a Type 2 SPD—all pre-wired for ease of installation. Type B RCDs are essential for detecting AC, pulsed DC, and smooth DC leakage currents, ensuring safety when used with inverter-based heat pump systems.
Compliant with BS EN 62423, this unit supports modern low-carbon installations while meeting all relevant 18th Edition wiring regulations.
⚙️ Key Features – RCD B Heat Pump Consumer Unit
- 8-module metal enclosure for dedicated heat pump circuits
- 40A Type B RCD – Detects AC, pulsed DC, and smooth DC residual currents
- C40 Double Pole MCB (2-module) – Provides full isolation and protects against overcurrent
- Type 2 SPD – Guards heat pump electronics from transient voltage surges
- Fully pre-wired – Simplifies setup and speeds up installations
- Complies with BS EN 62423, BS EN 61439-3, and 18th Edition standards
Technical Overview
- Enclosure size: 8 usable ways
- Incomer: 40A Type B RCD
- MCB: 40A Type C, double pole, 2-module
- SPD: Type 2 with visual status indicator
- Enclosure: Metal-clad, white finish
- Application: Heat pump circuit protection
- Standards: BS EN 62423, BS EN 61008, BS EN 60898, BS EN 61439-3, BS EN 61643-11
- Brand: Live Electrical
What’s Included
- 1x 8 Module Consumer Unit Enclosure
- 1x 40A Type B RCD
- 1x C40 Double Pole MCB (2-module)
- 1x Type 2 SPD with labelling
- Pre-installed internal wiring and terminals
- Installation instructions
✅ Why Choose This Product?
This consumer unit is engineered for safe and stable performance in heat pump installations. The Type B RCD delivers reliable protection against smooth DC leakage, commonly found in inverter-driven systems. The inclusion of a double pole MCB offers complete circuit isolation, ideal for heat pumps. Its pre-wired layout shortens setup time, ensuring compliance and efficiency for installers.
About Live Electrical
Live Electrical creates high-performance consumer units and protection devices for residential and renewable applications. Known for installer-friendly designs and strict compliance, they’re a trusted name in modern circuit protection.
Why Buy from Electrical4Less?
Electrical4Less specialises in compliant, trade-ready heat pump consumer units. We offer:
- Fast UK delivery
- Excellent trade pricing
- Expert customer service
- Reliable stock from top UK suppliers
- Member benefits through IBA and EDA
Explore More Heat Pump Electrical Protection
Looking for related products? Discover a wide range of compatible components and alternatives in our dedicated categories:
- Visit our Heat Pump Circuit Protection section for MCBs, RCDs, and surge protection devices tailored for low-carbon heating systems.
- Browse Heat Pump Consumer Units for fully pre-wired enclosures specifically designed for heat pump installations.
Whether you need modular components or complete boards, we’ve got you covered.

