8 Module Heat Pump Consumer Unit with Type B HP RCBOs + SPD (WME08/SP-SI)

Built to order – allow five working days after your order is received.

The WME08/SP-SI is a customer-specified 8-module heat pump consumer unit built around the WME08/SP metal enclosure. It combines a 100A main switch and Type 2 surge protection with two 20A B-curve Type B HP RCBOs, a 20A B-curve MCB, a 16A B-curve MCB and a 32A Type A mini RCBO.

The two WHR120B-030 heat pump RCBOs provide individual 30mA Type B HP residual-current and overcurrent protection for their respective circuits. The 20A and 16A MCBs provide overcurrent protection only; the 32A Type A RCBO provides its own 30mA residual-current and overcurrent protection. This mix gives the installer distinct protection options within one compact board, subject to the connected equipment and overall circuit design.

What's included in this build?

• Surge-protected enclosure: 1 × WME08/SP metal board with 100A main switch and 20/40kA SPD
• Type B HP RCBOs: 2 × WHR120B-030 – 20A B curve, 1P+N, 30mA, 10kA
• 20A MCB: 1 × WMC120B – single-pole B curve, 6kA
• 16A MCB: 1 × WMC116B – single-pole B curve, 6kA
• Type A RCBO: 1 × WRB132B-030 – 32A B curve, 30mA
• Busbar: 1 × BB7 7-pin 100A pin-type busbar

Protection layout and capacity

The WME08/SP enclosure has five usable outgoing ways. This build specifies five single-module outgoing devices, so there is no spare outgoing way in the quoted arrangement. The metal enclosure is IP40 rated for indoor installation and measures 232 × 240 × 112 mm.

The Type B HP designation refers to residual-current detection intended for heat pump applications where smooth DC and high-frequency leakage may be present. The B curve on the RCBOs and MCBs describes their separate overcurrent trip characteristic. Confirm the required ratings, RCD type and circuit coordination against the heat pump manufacturer’s instructions before ordering.

Compare related 8-module boards

Explore heat pump consumer units or 8-module consumer units for other configurations. This listing is for the exact component schedule above. For an alternative build, email sales@pandduk.com with the required circuit details before ordering.

The WME08/SP-SI is assembled to the stated five-device schedule. Final selection, installation and testing must be completed by a qualified electrician in accordance with the connected equipment manufacturer's instructions and the installation design.

• Confirm that each of the two 20A B-curve Type B HP RCBOs matches its intended heat pump or associated circuit.
• Check the protection arrangement for the 20A and 16A MCB circuits; these MCBs do not provide residual-current protection themselves.
• Confirm that the 32A B-curve Type A RCBO is suitable for its connected load.
• All five usable outgoing ways are occupied by the quoted devices. Check the full circuit schedule if future expansion is required.
• The WME08/SP enclosure is IP40 rated and intended for a suitable indoor location. Its dimensions are 232 × 240 × 112 mm.
• Follow the supplied manufacturer documentation for the enclosure, devices and SPD during final installation and commissioning.

What protection devices are included?

Two 20A B-curve 30mA Type B HP RCBOs (WHR120B-030), one 20A B-curve MCB (WMC120B), one 16A B-curve MCB (WMC116B), and one 32A B-curve 30mA Type A RCBO (WRB132B-030). The build also includes the WME08/SP main-switch and surge-protected enclosure and a BB7 busbar.

Does the board have a separate Type B heat pump RCD?

No. Its two 20A heat pump circuits each have a Type B HP RCBO. This is different from a board with one shared Type B HP RCD protecting multiple circuits.

Do the MCB circuits have residual-current protection?

The fitted 20A and 16A MCBs provide overcurrent protection, not residual-current protection. The electrician must confirm the complete protective arrangement for those circuits as part of the installation design.

Are there any spare outgoing ways?

No spare way is specified. The WME08/SP base board has five usable outgoing ways and this build includes five outgoing devices: two Type B HP RCBOs, two MCBs and one Type A RCBO.

What is the difference between Type B HP and B curve?

Type B HP describes the RCBO's residual-current detection characteristic for appropriate heat pump applications. B curve describes its overcurrent trip characteristic. They are separate device specifications.

Is surge protection included?

Yes. The WME08/SP enclosure includes a 100A main switch and SPD; the revised component quote describes the SPD as 20/40kA.

Can I use the board outdoors?

No. The WME08/SP metal enclosure is IP40 rated for indoor use. Choose a suitably rated enclosure if the installation location is exposed to weather.

Can I order a different circuit arrangement?

This listing is for the exact configuration shown. Email sales@pandduk.com with your circuit schedule if you require a different custom build.

How long does the build take?

Allow five working days after the order is received.