Lewden HPPI-R04W-1 PRO 4 Way Heat Pump Consumer Unit with 100A Type B RCD, B6 & B20 RCBOs and SPD

Compact Pre-Configured Consumer Unit for Air Source Heat Pump Installations

The Lewden HPPI-R04W-1 is a compact PRO Series 4 way consumer unit specifically configured for air source heat pump (ASHP) installations requiring Type B residual current protection. Supplied pre-fitted with a 100A Type B RCD, 6A and 20A B Curve Type A RCBOs and Type 2 surge protection, it provides a convenient distribution and protection solution for modern heat pump installations.

Its compact PRO enclosure is particularly useful where installation space is limited, while spare capacity allows additional heat pump-related circuits to be incorporated where required. The enclosure also features round knockouts to simplify cable, conduit, gland and SWA entry.

Key Features

• Lewden PRO Series heat pump consumer unit
• Product code HPPI-R04W-1
• Specifically configured for air source heat pump installations
• 4 usable ways
• 9-module enclosure
• Pre-fitted 100A Type B RCD
• Pre-fitted 6A B Curve Type A RCBO
• Pre-fitted 20A B Curve Type A RCBO
• Integrated Type 2 Surge Protection Device
• 100A main switch
• Dual screw terminals for secure incoming-tail termination
• Dedicated protection for ASHP control and immersion heater final circuits
• Spare ways for additional heat pump circuits
• Compact PRO Series enclosure
• Round knockouts for convenient cable entry
• Suitable for cable glands, conduit and cable grommets
• Suitable for SWA cable termination
• 230V rated
• Top-hinged door
• Designed for professional heat pump installations

Pre-Configured for Heat Pump Installations

Rather than assembling a suitable distribution arrangement from individual components, the HPPI-R04W-1 comes configured specifically with heat pump installations in mind.

Lewden's arrangement combines a 100A Type B RCD with individual Type A RCBOs for associated final circuits. The included B6 RCBO is intended for ASHP controls, while the B20 RCBO provides protection for an immersion heater final circuit.

This pre-configured approach can help simplify product selection while providing a neat, dedicated distribution point for the heat pump installation.

100A Type B RCD Protection

At the heart of the HPPI-R04W-1 is a 100A Type B RCD.

Type B residual current protection is particularly relevant to electrical equipment incorporating power electronics and inverter technology, where residual currents can include components beyond those addressed by more basic RCD types.

The HPPI-R04W-1 is specifically marketed for ASHP installations requiring Type B RCD protection. The exact RCD requirements should always be checked against the heat pump manufacturer's installation instructions and the electrical design.

B6 & B20 Type A RCBOs Included

The consumer unit is supplied with two individual B Curve Type A RCBOs:

• 6A B Curve Type A RCBO – intended for the ASHP control circuit
• 20A B Curve Type A RCBO – intended for an immersion heater final circuit

Using RCBOs provides individual circuits with combined residual-current and overcurrent protection, helping minimise the impact of a fault on other protected circuits.

Integrated Type 2 Surge Protection

The HPPI-R04W-1 is supplied with a Type 2 Surge Protection Device (SPD) to help protect connected equipment against transient overvoltages.

This is particularly valuable with modern heat pump systems containing sensitive electronic controls, inverter technology and associated electronic components.

The integrated SPD means surge protection is already incorporated into the pre-configured consumer unit rather than requiring a separate external enclosure.

100A Main Switch

A 100A main switch is included as part of the consumer unit configuration, providing a convenient means of isolation.

Lewden's design incorporates dual screw terminals for secure termination of the incoming tails.

Compact PRO Series Enclosure

The HPPI-R04W-1 uses Lewden's compact PRO Series enclosure, offering a practical option for installations where available wall space is limited.

Despite its compact dimensions, the enclosure provides 4 usable ways and 9 modules, allowing the supplied protective devices to be housed neatly while retaining useful capacity for the intended installation.

Spare Capacity for Additional Heat Pump Circuits

The consumer unit provides spare ways that can accommodate additional heat pump-related circuits where required by the system design.

Lewden specifically identifies potential use for additional integral heater circuits, providing useful flexibility for more involved heat pump installations.

Any additional protective devices must, of course, be correctly selected for the connected equipment and overall electrical design.

Installer-Friendly Cable Entry

Round knockouts are incorporated into the consumer unit enclosure, providing practical cable-entry options for professional installation.

They are designed to accommodate:

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

This helps make the HPPI-R04W-1 suitable for a variety of heat pump wiring arrangements and installation environments.

• Brand: Lewden
• Range: PRO Series
• Product Code: HPPI-R04W-1
• Product Type: Heat Pump Consumer Unit
• Primary Application: Air Source Heat Pump Installations
• Number of Usable Ways: 4
• Number of Modules: 9
• Incoming Device: 100A Main Switch / Isolator
• RCD: 100A Type B RCD
• RCBO 1: 6A B Curve Type A RCBO
• RCBO 2: 20A B Curve Type A RCBO
• Surge Protection: Yes
• SPD Type: Type 2
• Voltage Rating: 230V
• Door Type: Top Hinged
• Dimensions: 268mm (H) x 208mm (W) x 109mm (D)
• Cable Entry: Round Knockouts
• Guarantee: 1 Year

Suitable Applications

• Air Source Heat Pump Installations
• ASHP Electrical Supplies
• Domestic Heat Pump Installations
• Heat Pump Control Circuits
• Immersion Heater Circuits
• Low-Carbon Heating Installations
• Renewable Heating Systems
• Residential Electrical Installations
• Dedicated Heat Pump Distribution
• Installations Requiring Type B RCD Protection
• Heat Pump Installations Requiring Type 2 SPD Protection

Why Choose the Lewden HPPI-R04W-1?

The Lewden HPPI-R04W-1 brings several of the key protective components required for an appropriate heat pump installation together in one compact, purpose-configured enclosure.

With its 100A Type B RCD, B6 and B20 Type A RCBOs, 100A main switch and integrated Type 2 SPD, installers receive a ready-configured distribution solution rather than having to select and assemble the principal components individually.

Its compact 4 way PRO Series enclosure, spare circuit capacity and practical round cable-entry knockouts further enhance installation flexibility. For ASHP systems specifically requiring this combination of Type B RCD and individual circuit protection, the HPPI-R04W-1 provides a neat and professional solution.