Lewden HPPO-07MG-AC25 PRO65 7 Way IP65 Heat Pump Consumer Unit with C25 Type B-HP RCBO, B6 & B20 RCBOs and SPD

IP65 Heat Pump Consumer Unit with Specialist 25A Type B-HP Protection

The Lewden HPPO-07MG-AC25 is a purpose-configured PRO65 7 way heat pump consumer unit designed for modern air source heat pump (ASHP) installations. It combines a specialist 25A C Curve Type B-HP Heat Pump RCBO, B6 and B20 Type A RCBOs, a 100A main switch and integrated Type 2 surge protection within a robust IP65 enclosure.

Designed for inverter-driven heat pumps where enhanced Type B residual-current protection is specified, the HPPO-07MG-AC25 offers 7 usable ways, providing useful spare capacity for additional heat pump circuits such as integral heaters. The exact model is rated at 230V, single phase and 100A.

Key Features

• Lewden PRO65 heat pump consumer unit
• Product code HPPO-07MG-AC25
• Designed for air source heat pump installations
• 7 usable ways
• 10-module enclosure
• IP65 ingress protection
• 230V single-phase operation
• 100A rated current
• 100A main switch / isolator
• 25A C Curve Type B-HP Heat Pump RCBO included
• 6A B Curve Type A RCBO included
• 20A B Curve Type A RCBO included
• Integrated Type 2 Surge Protection Device
• Designed for compatible inverter-driven heat pumps
• Enhanced high-frequency residual-current protection
• Suitable for applications operating at frequencies up to 20kHz and above
• Minimum trigger point of 150mA above 1kHz
• B6 RCBO intended for ASHP controls
• B20 RCBO intended for immersion heater final circuit
• Spare ways for additional heat pump circuits
• Round cable-entry knockouts
• Suitable for cable glands, conduit, grommets and SWA termination
• Compact 264 x 240 x 105mm enclosure
• Top-hinged door
• 1-year guarantee

25A C Curve Type B-HP Heat Pump RCBO

At the heart of the HPPO-07MG-AC25 is a specialist 25A Heat Pump RCBO. Current product information for this exact model specifies a C25 Heat Pump RCBO, alongside the two additional Type A RCBOs.

The Lewden B-HP device combines residual-current protection with overload and short-circuit protection, providing dedicated protection for the main heat pump circuit without requiring a separate Type B RCCB and MCB arrangement.

It is important to distinguish the two classifications: C Curve refers to the RCBO's overcurrent tripping characteristic, while Type B-HP describes its specialist residual-current protection characteristics.

Enhanced Protection for Inverter-Driven Heat Pumps

Modern air source heat pumps frequently incorporate inverter-driven compressors and power electronics that can create residual currents across a broader frequency range than conventional electrical equipment.

Lewden's HPPO-07MG-AC25 is designed for ASHP installations with inverter-driven compressors operating at frequencies up to 20kHz and above, with a minimum trigger point of 150mA above 1kHz.

This makes the unit particularly relevant where the heat pump manufacturer specifies enhanced Type B protection.

Not every heat pump requires Type B-HP protection. The required RCBO type, current rating and overcurrent curve should always be selected according to the heat pump manufacturer's instructions and the electrical system design.

B6 Type A RCBO for ASHP Controls

Alongside the C25 B-HP device, the HPPO-07MG-AC25 includes a 6A B Curve Type A RCBO, intended for the ASHP control circuit.

The RCBO provides individual residual-current, overload and short-circuit protection, helping create a clearly organised dedicated distribution arrangement for the heat pump installation.

B20 Type A RCBO for Immersion Heater

A 20A B Curve Type A RCBO is also pre-fitted for an associated immersion heater final circuit.

Together, the C25 Type B-HP RCBO, B6 Type A RCBO and B20 Type A RCBO provide a practical pre-configured arrangement for the main heat pump supply and two common associated circuits.

Integrated Type 2 Surge Protection

The Lewden HPPO-07MG-AC25 incorporates a Type 2 Surge Protection Device (SPD) to help safeguard connected equipment against transient voltage spikes.

This is particularly beneficial for modern heat pump installations containing sensitive inverter electronics, controllers and other electronic components.

Integrating surge protection within the dedicated consumer unit creates a neat, centralised installation without requiring a separate SPD enclosure.

100A Main Switch

A 100A main switch / isolator provides convenient isolation of the complete heat pump distribution unit.

The main switch incorporates dual screw terminals, designed to provide secure termination of incoming tails.

Seven Usable Ways for Greater Flexibility

The HPPO-07MG-AC25 provides 7 usable ways, offering useful flexibility for heat pump installations with several associated circuits.

In addition to the supplied C25, B6 and B20 protective devices, spare capacity can accommodate additional heat pump circuits where required. Current product information specifically identifies integral heater circuits as a potential use for the spare ways.

Any additional protective devices must be selected to suit the connected equipment, cable design and heat pump manufacturer's requirements.

IP65 Protection

A major benefit of the PRO65 configuration is its IP65 ingress protection.

This provides increased protection against dust and water ingress compared with a standard indoor consumer unit, making the HPPO-07MG-AC25 a practical choice for heat pump installations where the distribution equipment requires greater environmental protection.

Correct installation and appropriately rated glands and cable-entry accessories are essential to maintain the enclosure's IP65 rating.

Compact PRO65 Enclosure

Despite providing seven usable ways and accommodating several pre-fitted protective devices, the HPPO-07MG-AC25 measures approximately:

264mm high x 240mm wide x 105mm deep

The enclosure provides 10 modules and incorporates a top-hinged door, delivering a compact dedicated distribution solution for heat pump installations.

Installer-Friendly Cable Entry

The enclosure incorporates round knockouts designed to simplify professional cable entry and termination.

Suitable installation methods include:

• Cable glands
• Conduit
• Cable grommets
• SWA cable termination

This flexibility makes it easier to integrate the consumer unit into different heat pump wiring arrangements while using appropriately selected accessories to maintain the required environmental protection.

• Brand: Lewden
• Range: PRO65
• Product Code: HPPO-07MG-AC25
• Product Type: Heat Pump Consumer Unit
• Primary Application: Air Source Heat Pump Installations
• Rated Operating Voltage: 230V
• Phase: Single Phase
• Rated Current: 100A
• Usable Ways: 7
• Number of Modules: 10
• IP Rating: IP65
• Incoming Device: 100A Main Switch / Isolator
• Heat Pump RCBO Rating: 25A
• Heat Pump RCBO Curve: C Curve
• Heat Pump RCBO Type: Type B-HP / Enhanced Type B
• Additional RCBO 1: 6A B Curve Type A RCBO
• Additional RCBO 2: 20A B Curve Type A RCBO
• Surge Protection: Yes
• SPD Type: Type 2
• High-Frequency Application: Up to 20kHz and above
• Minimum Trigger Point Above 1kHz: 150mA
• Dimensions: 264mm (H) x 240mm (W) x 105mm (D)
• Door Type: Top Hinged
• Cable Entry: Round Knockouts
• Guarantee: 1 Year

Suitable Applications

• Air Source Heat Pump Installations
• ASHP Electrical Distribution
• Inverter-Driven Heat Pumps
• Heat Pumps Requiring Enhanced Type B Protection
• Heat Pumps Requiring a 25A B-HP RCBO
• Dedicated Heat Pump Supplies
• IP65 Heat Pump Installations
• Heat Pump Control Circuits
• Immersion Heater Circuits
• Integral Heater Circuits
• Domestic Heat Pump Installations
• Commercial Heat Pump Installations
• Renewable Heating Systems
• Low-Carbon Heating Installations
• Heat Pump Retrofit Projects
• New-Build Heat Pump Installations

Why Choose the Lewden HPPO-07MG-AC25?

The Lewden HPPO-07MG-AC25 combines specialist heat pump protection, generous circuit capacity and an IP65 PRO65 enclosure in one purpose-configured unit.

Its key feature is the included 25A C Curve Type B-HP Heat Pump RCBO, designed for compatible inverter-driven heat pumps requiring enhanced residual-current protection at higher frequencies. Dedicated B6 and B20 Type A RCBOs provide protection for the intended ASHP controls and immersion heater circuits.

A 100A main switch and Type 2 SPD complete the principal protection arrangement, while 7 usable ways leave capacity for additional heat pump-related circuits.

For installations where the heat pump manufacturer specifies a 25A enhanced Type B-HP protective device, the HPPO-07MG-AC25 provides a compact and professional way to combine the principal heat pump circuit protection, associated RCBOs, isolation and surge protection within one IP65 enclosure.