Lewden BRCBO-B40/30/1HP 40A B Curve 30mA Type B-HP Heat Pump RCBO 6kA

Enhanced Type B RCBO Protection Designed for Heat Pump Installations

The Lewden BRCBO-B40/30/1HP is a specialist 40A B Curve Type B-HP RCBO developed for heat pump installations requiring enhanced residual current protection. Combining 30mA RCD protection with overload and short-circuit protection in a single 18mm module, it provides a compact alternative to installations that require a separate Type B RCCB and MCB.

Lewden's B-HP technology is designed specifically for heat pump applications where manufacturers require Type F, Type B or an enhanced Type B protective device capable of responding to higher-frequency leakage currents. The B-HP RCBO is operational at frequencies of 20kHz and above, with the enhanced Type B characteristic designed to cater for frequencies up to 20kHz with a minimum trigger point of 150mA above 1kHz.

Key Features

• Lewden specialist heat pump RCBO
• Product code BRCBO-B40/30/1HP
• 40A rated current
• B Curve overcurrent characteristic
• Enhanced Type B-HP residual current protection
• 30mA rated residual current
• 6kA short-circuit breaking capacity
• Designed specifically for heat pump applications
• Operational at frequencies of 20kHz and above
• Enhanced high-frequency residual current response
• Minimum 150mA trigger point above 1kHz
• Combines RCD and overcurrent protection
• 1 pole + switched neutral
• Bi-directional operation
• Compact single-module design
• Only 18mm wide
• DIN rail mounting
• Fits standard Lewden RCBO consumer units
• Suitable for Lewden High Integrity circuits
• Certified to BS EN/IEC 61009-1
• Certified to BS EN/IEC 62423
• Operating temperature from -25°C to +40°C

Developed for Modern Heat Pump Technology

Heat pumps contain sophisticated electronic power-control equipment, including inverter technology, which can produce residual currents with characteristics different from those associated with traditional resistive electrical loads.

Many heat pump manufacturers therefore specify Type F or Type B residual current protection, while certain equipment requires an enhanced Type B device capable of responding appropriately to higher-frequency residual currents.

The Lewden B-HP range has been developed specifically to address these requirements, making the BRCBO-B40/30/1HP a purpose-designed protective device for compatible heat pump circuits.

Enhanced Type B-HP Protection

The key difference between the BRCBO-B40/30/1HP and a conventional Type B RCBO is its B-HP characteristic for heat pump applications.

According to the supplied Lewden technical information, some heat pump manufacturers require an enhanced Type B RCD capable of catering for frequencies up to 20kHz, with a minimum trigger point of 150mA above 1kHz.

The Lewden B-HP RCBO is designed to provide residual current protection while remaining operational at frequencies of 20kHz and above, making it suitable where this enhanced high-frequency characteristic is required by the heat pump manufacturer.

RCD & Overcurrent Protection in One Device

Unlike an RCCB, the BRCBO-B40/30/1HP is an RCBO, meaning it combines:

• Residual current protection
• Overload protection
• Short-circuit protection

This eliminates the need for the additional MCB that would normally be required when using a Type B RCCB alone.

For installers, this provides a neater and considerably more space-efficient method of protecting an appropriate heat pump circuit.

Compact 18mm Single-Module Width

A major installation benefit of the Lewden B-HP RCBO is its compact 1-module, 18mm width.

A Type B RCCB combined with its associated MCB can occupy around three modules within a consumer unit. By integrating both residual current and overcurrent protection into a single RCBO, the BRCBO-B40/30/1HP requires just one 18mm module.

This can be particularly valuable when upgrading existing installations where available consumer-unit capacity is limited.

40A B Curve Protection

This model has a 40A rated current with a B Curve tripping characteristic, making it suitable for compatible heat pump circuits where a 40A B Curve protective device has been specified following the appropriate electrical design calculations.

Lewden also offers the B-HP RCBO family in 16A, 20A, 25A, 32A and 40A ratings, with both B Curve and C Curve variants available.

30mA Residual Current Protection

The BRCBO-B40/30/1HP provides a 30mA rated residual operating current, combining the specialist Type B-HP residual current characteristic with the additional protection required by appropriately designed circuits.

The exact protective device must always be selected to match the heat pump manufacturer's instructions and the electrical installation design.

6kA Short-Circuit Breaking Capacity

The RCBO has a 6kA short-circuit breaking capacity, providing overcurrent protection alongside its residual current functionality.

This integrated design means the circuit does not require a separate MCB simply to provide the overcurrent protection that an RCCB itself lacks.

Bi-Directional Operation

The Lewden BRCBO-B40/30/1HP is bi-directional, providing greater flexibility within suitable electrical installations.

This characteristic can be particularly useful with modern electrical equipment and system arrangements where power-flow considerations differ from conventional single-direction final circuits.

1 Pole + Switched Neutral

The B-HP RCBO features a 1 pole plus switched neutral configuration, switching the neutral as part of the protective device arrangement while retaining its compact single-module format.

This allows the complete device to occupy only 18mm of DIN rail space.

Compatible with Lewden Consumer Units

Lewden B-HP RCBOs are designed for installation within a standard Lewden RCBO consumer unit.

They can also be installed as one of the High Integrity circuits within compatible Lewden:

• Dual RCCB consumer units
• Split Load consumer units
• Dual Tariff consumer units

This makes the B-HP range particularly useful when adding a heat pump circuit to an existing compatible Lewden distribution system.

Certified to Relevant RCBO & Type B Standards

The Lewden B-HP Heat Pump RCBO range is certified to:

BS EN/IEC 61009-1 – covering residual current operated circuit breakers with integral overcurrent protection for household and similar applications.

BS EN/IEC 62423 – covering Type F and Type B residual current operated circuit breakers.

The specified operating temperature range is -25°C to +40°C.

• Brand: Lewden
• Range: B-HP Heat Pump RCBO
• Product Code: BRCBO-B40/30/1HP
• Product Type: Heat Pump RCBO
• RCD Classification: Enhanced Type B / Type B-HP
• Rated Current: 40A
• Trip Curve: B Curve
• Rated Residual Current: 30mA
• Short-Circuit Breaking Capacity: 6kA
• Number of Poles: 1 Pole + Switched Neutral
• Bi-Directional: Yes
• Module Width: 1 Module
• Width: 18mm
• Residual Current Protection: Yes
• Overload Protection: Yes
• Short-Circuit Protection: Yes
• High-Frequency Operation: 20kHz and Above
• Enhanced Type B Frequency Capability: Up to 20kHz
• Minimum Trigger Point Above 1kHz: 150mA
• Mounting: DIN Rail
• Operating Temperature: -25°C to +40°C
• Standard: BS EN/IEC 61009-1
• Type B Standard: BS EN/IEC 62423
• Primary Application: Heat Pump Circuit Protection
• Consumer Unit Compatibility: Suitable Lewden RCBO Consumer Units & Compatible High Integrity Ways

The exact BRCBO-B40/30/1HP is not well indexed in current public web results, so the product-specific characteristics above have been restricted to the technical information supplied for the Lewden B-HP range rather than supplementing it with potentially mismatched Type B RCBO data.

Suitable Applications

• Air Source Heat Pumps
• Ground Source Heat Pumps
• Domestic Heat Pump Systems
• Commercial Heat Pump Systems
• Inverter-Driven Heat Pumps
• Heat Pump Dedicated Circuits
• Low-Carbon Heating Installations
• Residential Electrical Installations
• Commercial Electrical Installations
• Lewden Consumer Units
• High Integrity Consumer Unit Circuits
• Heat Pumps Requiring Enhanced Type B Protection

Why Choose the Lewden BRCBO-B40/30/1HP?

The Lewden BRCBO-B40/30/1HP is purpose-designed for modern heat pump installations where standard residual current protection may not meet the equipment manufacturer's requirements.

Its enhanced Type B-HP residual current characteristic is designed for the higher-frequency leakage conditions associated with certain heat pump systems, while the 40A B Curve overcurrent protection, 30mA residual current rating and 6kA breaking capacity combine circuit and residual-current protection in one device.

Perhaps most importantly for installers, this functionality is contained within a compact 18mm single-module RCBO. It therefore avoids the additional MCB and approximately three-module arrangement associated with using a Type B RCCB plus separate overcurrent protection.

With bi-directional operation, 1 pole plus switched neutral configuration and compatibility with suitable Lewden consumer units, the BRCBO-B40/30/1HP provides a compact specialist solution for heat pump circuits where its particular B-HP characteristics are specified.