Live Electrical LHP840MSB Heat Pump SPD Consumer Unit
8 Module Heat Pump Consumer Unit with Type B RCD, C40 DP MCB and Type 2 SPD
The Live Electrical LHP840MSB Heat Pump SPD Consumer Unit provides dedicated electrical protection for air source and ground source heat pump installations. This pre-wired metal assembly combines a 40A 30mA Type B RCCB, C40 double pole MCB, 100A main switch and Type 2 surge protection device in one practical enclosure.
Designed for professional electricians, the LHP840MSB offers residual current protection, overcurrent protection and surge protection for compatible inverter-driven heat pump systems. Its Type B RCCB detects AC, pulsating DC and smooth DC residual currents, making it particularly suitable where the heat pump manufacturer specifies Type B protection.
The robust IP40 steel enclosure features a drop-down metal lid, raised DIN rail and multiple cable entry knockouts. Its pre-wired configuration helps reduce on-site assembly work and provides a convenient solution for dedicated heat pump electrical circuits.
Key Features – Live Electrical LHP840MSB Heat Pump SPD Consumer Unit
- 8-module steel enclosure for dedicated heat pump installations
- 40A 30mA Type B RCCB for AC, pulsating DC and smooth DC residual current detection
- C40 double pole MCB with 10kA breaking capacity
- 100A main switch for incoming supply isolation
- Type 2 SPD with 40kA maximum discharge current
- Pre-wired assembly for straightforward installation
- IP40 steel enclosure with drop-down metal lid
- White polyester powder-coated finish, RAL9010
- Raised DIN rail for improved cable routing
- 25mm and 32mm cable entry knockouts
- Suitable for compatible air source and ground source heat pump systems
40A 30mA Type B RCD Protection for Heat Pumps
The Live Electrical LHP840MSB Heat Pump SPD Consumer Unit incorporates a CEV240B-030 Type B RCCB, rated at 40A with 30mA residual current sensitivity.
Type B residual current devices are designed to detect AC, pulsating DC and smooth DC residual currents. This makes them particularly relevant for compatible inverter-driven heat pumps, where electronic frequency converters may produce residual currents that conventional Type A devices cannot detect.
The supplied Type B RCCB complies with BS EN 61008 and BS EN 62423, providing a suitable protection option where specified by the heat pump manufacturer.
With its integrated Type B protection, the LHP840MSB offers an installer-ready arrangement for modern low-carbon heating systems requiring dedicated residual current protection.
Integrated Type 2 Surge Protection for Heat Pump Electronics
The Live Electrical LHP840MSB Heat Pump SPD Consumer Unit includes an SP140 1P+N Type 2 surge protection device, designed to help safeguard sensitive electronic components against transient overvoltages.
Modern heat pumps incorporate control boards, inverter drives, sensors and electronic components that may be vulnerable to voltage surges associated with switching operations and indirect lightning effects.
The integrated SPD features a 20kA nominal discharge current and 40kA maximum discharge current, providing additional protection for appropriately designed heat pump electrical installations.
Type 2 SPD Technical Specifications
- SPD model: SP140 1P+N
- Surge protection classification: Type 2
- Nominal discharge current (In): 20kA
- Maximum discharge current (Imax): 40kA
- Maximum continuous operating voltage (Uc): 275V AC
- Voltage protection level (Up): 1.5kV
- Short-circuit current rating (Isccr): 25kA
- Earthing system compatibility: TT and TN
- Standard: IEC/EN 61643-11
C40 Double Pole MCB with 10kA Breaking Capacity
The Live Electrical LHP840MSB Heat Pump SPD Consumer Unit features a CB240C 40A double pole miniature circuit breaker with a Type C tripping characteristic and 10kA breaking capacity.
The MCB provides overload and short-circuit protection for appropriately designed dedicated heat pump circuits. Its Type C characteristic is suitable for compatible equipment with moderate starting currents, subject to circuit design and manufacturer requirements.
The double pole configuration allows both line and neutral conductors to be switched, offering a practical protection arrangement for suitable single-phase heat pump installations.
MCB Technical Specifications
- MCB model: CB240C
- Rated current: 40A
- Number of poles: 2
- Tripping characteristic: Type C
- Rated breaking capacity: 10kA
- Rated voltage: 230/400V AC
- Rated frequency: 50/60Hz
- Maximum terminal capacity: 16mm²
- Standard: BS EN 60898
100A Main Switch for Incoming Supply Isolation
The LHP840MSB also incorporates a Live Electrical MS2100D 100A main switch, providing a means of switching the incoming electrical supply.
Rated at 230V with a maximum terminal capacity of 50mm², the main switch supports secure incoming supply connections when installed according to the manufacturer’s instructions.
Technical Specifications – Live Electrical LHP840MSB Heat Pump SPD Consumer Unit
- Brand: Live Electrical
- Product code: LHP840MSB
- Product type: Heat Pump SPD Consumer Unit
- Enclosure: 8-module metal unit
- Operating voltage: 230V AC
- Enclosure protection rating: IP40
- Enclosure material: Steel
- Finish: White polyester powder coating, RAL9010
- Dimensions: 270mm (H) x 208mm (W) x 110mm (D)
- RCCB type: Type B
- RCCB rating: 40A
- RCCB sensitivity: 30mA
- RCCB model: CEV240B-030
- MCB: C40 double pole, 10kA
- MCB model: CB240C
- Main switch: 100A, MS2100D
- Surge protection: Type 2 SPD, SP140 1P+N
- Installation: Pre-wired assembly
- Application: Dedicated heat pump electrical circuits
What’s Included with the Live Electrical LHP840MSB Heat Pump SPD Consumer Unit
- 1 x 8-module metal heat pump consumer unit enclosure
- 1 x CEV240B-030 40A 30mA Type B RCCB
- 1 x CB240C C40 double pole MCB
- 1 x MS2100D 100A main switch
- 1 x SP140 1P+N Type 2 SPD
- Pre-installed internal wiring and terminals
- Manufacturer installation instructions
Installer-Friendly IP40 Steel Enclosure
The Live Electrical LHP840MSB Heat Pump SPD Consumer Unit is housed in a robust steel enclosure finished in white polyester powder coating to RAL9010.
The fully enclosed metal construction features a drop-down lid, raised DIN rail and accessible internal wiring space to support efficient installation and cable routing.
Multiple cable entry points provide flexibility during installation, including 25mm and 32mm knockouts on the top and bottom, 32mm knockouts on the sides and rear, plus larger rear cable slots.
Raised mounting keyholes allow the enclosure to be securely fixed using suitable wall fixings.
Suitable Applications – Live Electrical LHP840MSB Heat Pump SPD Consumer Unit
The LHP840MSB is intended for dedicated electrical circuits supplying compatible heat pump installations, including:
- Domestic air source heat pumps
- Ground source heat pump systems
- Inverter-driven heat pumps requiring Type B residual current protection
- Residential low-carbon heating upgrades
- Dedicated single-phase heat pump electrical circuits
- Installations requiring integrated Type 2 surge protection
Electricians should confirm the protective device ratings, circuit design and residual current protection requirements against the heat pump manufacturer’s instructions and the current edition of BS 7671.
Why Choose the Live Electrical LHP840MSB Heat Pump SPD Consumer Unit?
The Live Electrical LHP840MSB Heat Pump SPD Consumer Unit combines Type B residual current protection, double pole overcurrent protection, incoming supply isolation and Type 2 surge protection within a pre-wired metal enclosure.
Its 40A 30mA Type B RCCB provides detection of smooth DC residual currents, making this unit particularly relevant for compatible inverter-driven heat pump equipment.
The pre-wired configuration helps reduce assembly work on site, while the raised DIN rail, multiple cable entry knockouts and accessible enclosure design support efficient installation by qualified electricians.
About Live Electrical
Live Electrical supplies electrical distribution and circuit protection equipment for residential and commercial installations. Its product range includes consumer units, MCBs, RCCBs, RCBOs, surge protection devices and specialist assemblies designed for modern electrical applications.
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 manufacturers to provide reliable electrical installation products.
Explore More Heat Pump Electrical Protection
Looking for additional circuit protection components or alternative heat pump consumer units? Explore our dedicated product ranges:
- Heat Pump Circuit Protection – Browse RCDs, MCBs and surge protection devices for dedicated heat pump installations.
- Heat Pump Consumer Units – Discover pre-wired consumer units and protective assemblies for low-carbon heating systems.
Order the Live Electrical LHP840MSB Heat Pump SPD Consumer Unit from Electrical4Less for competitive trade pricing and UK-wide delivery options.
