Lewden HPPO-07MG-AC16 PRO65 7 Way IP65 Heat Pump Consumer Unit with C16 Type B-HP RCBO, B6 & B20 RCBOs and SPD

IP65 Heat Pump Consumer Unit with 16A Type B-HP Protection

The Lewden HPPO-07MG-AC16 is a purpose-configured PRO65 7 way heat pump consumer unit designed for modern air source heat pump (ASHP) installations. Combining a specialist 16A C Curve Type B-HP Heat Pump RCBO, B6 and B20 Type A RCBOs, a 100A main switch and integrated Type 2 surge protection, it provides a comprehensive distribution and protection solution within a robust IP65 enclosure.

Designed for inverter-driven heat pump systems where enhanced Type B residual-current protection is specified, the HPPO-07MG-AC16 provides 7 usable ways, leaving useful capacity for additional associated circuits such as integral heaters.

Key Features

• Lewden PRO65 heat pump consumer unit
• Product code HPPO-07MG-AC16
• Designed for air source heat pump installations
• 7 usable ways
• 10-module enclosure
• IP65 ingress protection
• 100A rated current
• 230V single-phase operation
• 100A main switch / isolator
• C16 Type B-HP Heat Pump RCBO included
• B6 Type A RCBO included
• B20 Type A RCBO included
• Type 2 Surge Protection Device included
• Enhanced residual-current protection for compatible inverter-driven heat pumps
• High-frequency operation up to 20kHz and above
• Minimum tripping 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 glands, conduit, grommets and SWA termination
• Top-hinged door
• Compact 264 x 240 x 105mm enclosure
• 1-year guarantee

C16 Type B-HP Heat Pump RCBO

The key protective device within the HPPO-07MG-AC16 is the supplied 16A C Curve Heat Pump RCBO.

Lewden's specialist Type B-HP RCBO technology is designed for heat pump applications requiring enhanced residual-current protection at higher frequencies. The RCBO combines residual-current, overload and short-circuit protection within a single protective device.

Current product information for the exact HPPO-07MG-AC16 confirms a C16 Heat Pump RCBO, so the "C" designation should not be confused with its residual-current classification: C Curve refers to its overcurrent tripping characteristic, while Type B-HP describes its specialist residual-current behaviour.

Designed for Inverter-Driven Heat Pumps

Modern heat pumps frequently incorporate variable-speed inverter-driven compressors and sophisticated power electronics. These can produce residual-current characteristics across a wider frequency range than conventional electrical loads.

The HPPO-07MG-AC16 is specifically described for ASHP installations with inverter-driven compressors operating at frequencies up to 20kHz and above, with a minimum tripping point of 150mA above 1kHz.

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

Not every heat pump requires Type B-HP protection, so the required RCBO type and rating should always be selected in accordance with the heat pump manufacturer's instructions and the electrical system design.

B6 Type A RCBO for ASHP Controls

In addition to the specialist C16 heat pump RCBO, the consumer unit is supplied with a 6A B Curve Type A RCBO intended for the ASHP control circuit.

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

B20 Type A RCBO for Immersion Heater

A 20A B Curve Type A RCBO is also supplied and is intended for an associated immersion heater final circuit.

Together, the C16 B-HP RCBO, B6 Type A RCBO and B20 Type A RCBO provide dedicated protection for three key elements of a typical heat pump installation while leaving spare capacity for additional circuits.

Built-In Type 2 Surge Protection

The HPPO-07MG-AC16 incorporates a Type 2 Surge Protection Device (SPD) to help protect the installation and connected electronic equipment against transient overvoltages.

Heat pump systems can incorporate sensitive inverter electronics, controllers and other electronic components, making properly selected surge protection an important part of the overall electrical design.

With the SPD integrated into the consumer unit, the installation benefits from a neat centralised arrangement without requiring a separate surge-protection enclosure.

100A Main Switch

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

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

Seven Usable Ways for Greater Flexibility

The 7 usable ways make the HPPO-07MG-AC16 particularly flexible for heat pump installations requiring several associated electrical circuits.

With the principal heat pump, controls and immersion heater protective devices already supplied, the remaining capacity can accommodate additional heat pump-related circuits where required.

Lewden specifically identifies the spare ways as suitable for additional circuits such as integral heaters.

Any additional RCBOs or other protective devices should be selected according to the connected load, cable design and equipment manufacturer's requirements.

IP65 Protection

A major benefit of the PRO65 HPPO range is the IP65 enclosure, providing increased protection against dust and water ingress compared with standard indoor consumer units.

This makes the HPPO-07MG-AC16 particularly useful where the dedicated heat pump electrical distribution equipment needs to be installed in a more demanding location.

Correct installation, cable glands and entry accessories are essential to maintaining the enclosure's specified IP rating.

Compact 10-Module Enclosure

Despite providing 7 usable ways, the HPPO-07MG-AC16 uses a compact 10-module enclosure measuring approximately:

264mm high x 240mm wide x 105mm deep

The compact format helps reduce the wall space required for a dedicated heat pump distribution arrangement while retaining room for additional protective devices.

Installer-Friendly Cable Entry

The enclosure features round knockouts designed to accommodate common professional cable-entry methods, including:

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

This gives installers flexibility when positioning and wiring the consumer unit while allowing correctly selected glands and accessories to be used to maintain the required environmental protection.

• Brand: Lewden
• Range: PRO65
• Product Code: HPPO-07MG-AC16
• 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: 16A
• 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 Tripping Point Above 1kHz: 150mA
• Dimensions: 264mm (H) x 240mm (W) x 105mm (D)
• Door Type: Top Hinged
• Cable Entry: Round Knockouts
• Guarantee: 1 Year

The 100A main switch, C16 heat pump RCBO, B6 and B20 Type A RCBOs, Type 2 SPD, seven usable ways, 10-module enclosure and dimensions are confirmed by a current listing for the exact HPPO-07MG-AC16.

Suitable Applications

• Air Source Heat Pump Installations
• ASHP Electrical Distribution
• Inverter-Driven Heat Pumps
• Heat Pumps Requiring Type B-HP Protection
• 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-AC16?

The Lewden HPPO-07MG-AC16 combines specialist heat pump circuit protection with the increased environmental protection of the PRO65 IP65 enclosure.

Its principal heat pump circuit is protected by a 16A C Curve Type B-HP RCBO, providing the enhanced residual-current characteristics required by compatible inverter-driven heat pumps. Dedicated B6 and B20 Type A RCBOs are also supplied for the controls and immersion heater circuits.

A 100A main switch and Type 2 SPD complete the core configuration, while 7 usable ways provide valuable spare capacity for additional heat pump circuits.

For installers working with a heat pump manufacturer that specifies a 16A enhanced Type B-HP protective device, the HPPO-07MG-AC16 provides a compact, pre-configured and IP65-rated solution for bringing the principal protection and distribution equipment together in one enclosure.