Heat Pump Consumer Unit - WME**/HP40C
This Heat Pump Consumer Unit is a dedicated protection board designed specifically for inverter-driven heat pump circuits. Supplied pre-configured with a 40A Type B RCD, a 40A Type C MCB, and a 2-pole Type 2 SPD, it offers full compliance with BS7671 18th Edition Amendment 2 - including the latest...
This Heat Pump Consumer Unit is a dedicated protection board designed specifically for inverter-driven heat pump circuits. Supplied pre-configured with a 40A Type B RCD, a 40A Type C MCB, and a 2-pole Type 2 SPD, it offers full compliance with BS7671 18th Edition Amendment 2 - including the latest surge protection and RCD requirements for renewables.
Available in 8-way or 12-way variants, this board provides space for additional outgoing MCBs while maintaining a compact footprint. Built into a robust white powder-coated metal enclosure, it’s ready for install in domestic and light commercial applications.
- Application: Circuit protection for air source, ground source, and hybrid heat pump systems
- RCD: 40A Type B RCD for compatibility with inverter-based loads
- MCB: 40A C Curve MCB (10kA)
- SPD: Type 2 20kA/40kA surge protection (2 pole)
- Enclosure: IP-rated white steel enclosure with knockouts and DIN rail
- Spare ways: Additional module space for outgoing MCBs or RCBOs
- Lead Time: Built to order – 3 working days
8-Way Dimensions: 232mm (W) x 240mm (H) x 112mm (D)
12-Way Dimensions: 304mm (W) x 240mm (H) x 112mm (D)
Please note: 12-Way board is currently out of stock. More expected August 25 - contact us to reserve.
Q: Is this board compliant for heat pump installs under the 18th Edition?
A: Yes - it includes a Type B RCD and Type 2 SPD, both required for protecting inverter-driven loads such as heat pumps.
Q: What’s the difference between the 8-way and 12-way versions?
A: Both versions come with the same protection devices. The 12-way version offers additional space for future MCBs or circuit expansions.
Q: Can I add RCBOs to this board?
A: Yes - there are spare DIN ways for adding outgoing protection devices like RCBOs or MCBs.
Q: How quickly can this be delivered?
A: These are built to order. Please allow 3 working days. The 12-way variant is currently on backorder until August 25.
- Product Code: WME08/HP40C (8-Way), WME12/HP40C (12-Way)
- MCB: 40A, Type C, 10kA
- RCD: 40A, Type B, High Immunity
- SPD: Type 2, 2-Pole, 20kA/40kA
- Enclosure: White steel, IP-rated with DIN rail
- Mounting: Surface-mounted, knockouts included
- Standards: BS7671:2018+A2:2022, BS EN 61009, BS EN 61643-11
This board is supplied pre-wired and ready for install by a qualified electrician. Designed to simplify compliant protection for heat pump circuits requiring Type B RCD and SPD integration.
- Mount on a secure, dry internal surface using standard enclosure fixings
- Route incoming supply and outgoing circuits using rear/side knockouts
- Ensure correct earthing and SPD bonding as per BS7671
- Do not modify internal pre-wiring — contact us if custom build is needed
