Heat Pump SPD Consumer Unit – Live Electrical LHP840MSF
8 Module Metal Heat Pump Consumer Unit with Type F RCD, C40 DP MCB and Surge Protection
The Live Electrical LHP840MSF Heat Pump SPD Consumer Unit provides dedicated electrical protection for air source and ground source heat pump installations. This pre-wired 8-module metal consumer unit combines a 40A Type F RCD, C40 double pole MCB and Type 2 surge protection device in one practical enclosure.
Designed for professional electricians, the LHP840MSF simplifies the installation of dedicated heat pump circuits while providing essential residual current, overcurrent and surge protection. Its Type F RCD is particularly suitable for compatible inverter-driven equipment, offering protection against AC, pulsating DC and certain mixed-frequency residual currents.
The integrated Type 2 SPD helps protect sensitive heat pump electronics against transient overvoltages, while the pre-wired assembly reduces installation time and simplifies on-site wiring.
Key Features of the LHP840MSF Heat Pump Consumer Unit
- 8-module metal enclosure designed for dedicated heat pump circuits
- 40A Type F RCD suitable for compatible inverter-driven heat pumps
- C40 double pole MCB providing overload and short-circuit protection
- Type 2 surge protection device for transient overvoltage protection
- Pre-wired assembly to reduce installation time
- White powder-coated metal enclosure
- Suitable for air source and ground source heat pump installations, subject to manufacturer requirements
- Compact arrangement combining multiple protective devices in one enclosure
Type F RCD Protection for Inverter-Driven Heat Pumps
The Type F RCD included in the Live Electrical LHP840MSF is designed for equipment incorporating single-phase frequency converters and inverter technology.
Modern heat pumps frequently use variable-speed compressors and electronic control systems, which can generate residual currents with different frequency characteristics compared with conventional electrical equipment.
Unlike a standard Type A RCD, a Type F device can detect certain mixed-frequency residual currents associated with compatible inverter-driven equipment. This makes it a suitable option where the heat pump manufacturer specifies Type F residual current protection.
Type F RCDs are covered by BS EN 62423 and are not substitutes for Type B RCDs where protection against smooth DC residual currents is required.
Integrated Type 2 Surge Protection
The LHP840MSF Heat Pump SPD Consumer Unit incorporates a Type 2 surge protection device to help safeguard connected heating equipment against transient overvoltages.
Heat pump control boards, sensors and inverter components can be sensitive to electrical disturbances caused by switching events and indirect lightning effects.
The integrated SPD provides an additional layer of protection for these electronic components, helping reduce the risk of damage and costly equipment downtime.
C40 Double Pole MCB for Dedicated Heat Pump Circuits
The included C40 double pole miniature circuit breaker provides overload and short-circuit protection for the dedicated heat pump supply.
Its Type C tripping characteristic is designed to accommodate moderate starting currents, making it suitable for compatible electrical equipment with higher inrush current requirements.
The 40A rating must be checked against the heat pump manufacturer’s installation instructions, cable sizing, circuit design and relevant protective device requirements.
Technical Specifications – Heat Pump SPD Consumer Unit
- Manufacturer: Live Electrical
- Product code: LHP840MSF
- Product type: Heat Pump SPD Consumer Unit
- Enclosure capacity: 8 modules
- Enclosure material: Metal
- Enclosure finish: White powder-coated
- RCD type: Type F
- RCD current rating: 40A
- MCB rating: 40A
- MCB characteristic: Type C
- MCB poles: Double pole
- Surge protection: Type 2 SPD
- SPD indication: Status window
- Installation configuration: Pre-wired
- Application: Dedicated heat pump electrical supplies
- RCD standard: BS EN 62423
What’s Included with the Live Electrical LHP840MSF?
- 1 x 8-module metal consumer unit enclosure
- 1 x 40A Type F RCD
- 1 x C40 double pole MCB
- 1 x Type 2 surge protection device
- Pre-installed internal wiring, busbar and terminals
- Identification labels and installation instructions
Suitable Applications
The Live Electrical LHP840MSF is intended for dedicated electrical circuits supplying compatible heat pump installations, including:
- Domestic air source heat pump systems
- Ground source heat pump installations
- Residential heating system upgrades
- Low-carbon heating projects
- Compatible inverter-driven heat pump equipment
- Dedicated heat pump electrical distribution circuits
Before installation, electricians should confirm the required protective device characteristics with the heat pump manufacturer and ensure the completed installation complies with BS 7671.
Why Choose the Live Electrical Heat Pump SPD Consumer Unit?
The Heat Pump SPD Consumer Unit LHP840MSF offers a convenient solution for installers seeking a dedicated protection assembly for modern heat pump systems.
By combining a Type F RCD, C40 double pole MCB and Type 2 SPD in a pre-wired metal enclosure, the unit reduces the need to assemble separate protective devices on site.
Its integrated protection arrangement makes the LHP840MSF particularly useful for new heat pump installations and electrical upgrades where the specified protective devices are compatible with the connected equipment.
About Live Electrical
Live Electrical supplies circuit protection products for residential and commercial electrical installations. Its range includes consumer units, MCBs, RCBOs, RCDs, surge protection devices and specialist distribution boards designed with professional installers in mind.
Why Buy from Electrical4Less?
Electrical4Less is an independent electrical wholesaler based in Fulham, London, supplying professional electricians, contractors and installers throughout the UK.
We offer competitive trade pricing, UK-wide delivery options and knowledgeable customer service. As members of the Independent Buying Association (IBA) and Electrical Distributors’ Association (EDA), we work with established electrical manufacturers to provide dependable products for domestic and commercial installations.
Explore More Heat Pump Electrical Protection
Looking for additional protective devices or alternative heat pump distribution boards? Explore our dedicated product ranges:
- Heat Pump Circuit Protection – Browse RCDs, MCBs and surge protection components for heat pump installations.
- Heat Pump Consumer Units – Explore dedicated consumer units and pre-wired protection assemblies for low-carbon heating systems.
Order the Live Electrical LHP840MSF Heat Pump SPD Consumer Unit from Electrical4Less for competitive trade pricing and UK-wide delivery.
