Hager CDB563HP Type B HP RCCB – 63A 30mA for Heat Pumps
The Hager CDB563HP Type B HP RCCB is a specialist residual current circuit breaker designed for heat pump installations, particularly those incorporating inverter-driven compressors. Rated at 63A with 30mA sensitivity, this 1P+N device detects AC, pulsating DC and smooth DC residual fault currents.
Modern heat pumps can generate high-frequency leakage currents that require careful consideration when selecting an RCD. Hager’s Type B HP technology is designed to address these challenges, providing specialist residual-current protection while helping reduce unwanted tripping associated with inverter-driven equipment.
Key Features
- 63A rated current with 30mA residual operating sensitivity.
- Type B HP residual-current protection developed specifically for heat pump applications.
- Detects sinusoidal AC, pulsating DC and smooth DC residual fault currents.
- Suitable for appropriately designed single-phase 230V heat pump circuits.
- Specialist operating characteristics for high-frequency leakage currents.
- Hager B-HP technology designed for frequencies above 20kHz.
- Minimum tripping threshold of 150mA above 1kHz, according to Hager’s B-HP technical information.
- Helps reduce nuisance tripping associated with inverter-driven heat pumps.
- 1P+N configuration with two poles.
- 10kA rated conditional short-circuit current when used with suitable associated protection.
- Four-module DIN rail mounting.
- IP20 device protection rating.
- Operating temperature range of -25°C to +70°C, subject to applicable current derating.
Why Heat Pumps May Require Type B HP RCD Protection
Many modern air source heat pumps use electronic inverter technology to control compressor speed and improve operating efficiency. These electronic systems can generate residual currents containing DC components and high-frequency leakage currents.
Standard Type A RCCBs are not designed to detect smooth DC residual currents, while conventional Type B RCCBs may have different high-frequency operating characteristics.
The Hager CDB563HP Type B HP RCCB belongs to a specialist range designed to provide appropriate residual-current detection for heat pump applications while reducing the risk of unwanted operation caused by certain high-frequency leakage currents.
The correct protective device must always be selected according to the heat pump manufacturer’s requirements, the installation design and applicable electrical regulations.
Hager Type B HP Protection and Vaillant Heat Pumps
Hager and Vaillant UK have collaborated on specialist consumer units for air source heat pump installations, incorporating Hager’s Type B HP RCCB technology.
Hager has confirmed that the consumer units developed through this collaboration were tested and validated for use with Vaillant air source heat pumps. The project was intended to support installers with suitable circuit protection arrangements for modern inverter-driven heating systems.
The Hager CDB563HP Type B HP RCCB provides a 63A, 30mA protection option for suitable single-phase heat pump circuits, including installations where specialist protection for inverter-driven equipment is required.
Although Hager’s collaboration with Vaillant supports the application of B-HP technology in heat pump installations, compatibility must be confirmed against the specific Vaillant heat pump model, its installation instructions and the proposed consumer unit arrangement. The individual RCCB should not be assumed to have universal Vaillant approval.
High-Frequency Residual-Current Protection
Inverter-driven heat pumps can produce leakage currents at frequencies above the standard mains frequency of 50Hz. Selecting an RCCB with suitable high-frequency characteristics can help prevent unnecessary interruptions while maintaining the required residual-current protection.
Hager states that its Type B HP range is designed to function at frequencies greater than 20kHz, with a minimum tripping threshold of 150mA for frequencies above 1kHz.
These characteristics help differentiate the B-HP range from conventional Type B RCCBs and make it particularly relevant to heat pump applications.
However, excessive leakage currents, genuine electrical faults and unsuitable installation conditions can still cause tripping. The device is not immune to nuisance tripping.
63A RCCB for Single-Phase Heat Pump Circuits
The Hager CDB563HP Type B HP RCCB has a rated current of 63A and a residual operating sensitivity of 30mA. Its 1P+N configuration is intended for suitable single-phase 230V AC installations.
The 63A rating refers to the current the device can carry under specified operating conditions. It does not provide 63A overload protection.
As an RCCB, the CDB563HP does not incorporate overload or short-circuit protection. An appropriately selected MCB, fuse or other suitable overcurrent protective device must be provided separately as part of the circuit design.
The RCCB occupies four DIN rail modules, so installers should confirm available enclosure space and compatibility before installation.
Technical Specifications
| Manufacturer | Hager |
| Product Code | CDB563HP |
| Product Type | Residual Current Circuit Breaker (RCCB) |
| Range | Type B HP – Heat Pump |
| Residual Current Type | Type B HP |
| Rated Current | 63A |
| Rated Residual Operating Current | 30mA |
| Poles | 1P+N (2 Pole) |
| Rated Operational Voltage | 230V AC |
| Supply Frequency | 50Hz |
| High-Frequency Performance | Greater than 20kHz (B-HP range) |
| High-Frequency Tripping Characteristic | Minimum 150mA above 1kHz (B-HP range) |
| Rated Conditional Short-Circuit Current | 10kA (EN 61008-1) |
| Rated Breaking and Opening Capacity | 0.8kA |
| Rated Insulation Voltage | 400V |
| Rated Impulse Withstand Voltage | 4kV |
| IP Rating | IP20 |
| Mounting | DIN Rail |
| Number of Modules | 4 |
| Height | 85mm |
| Width | 72mm |
| Depth | 70mm |
| Terminal Tightening Torque | 3.6Nm |
| Solid Conductor Capacity | 1–25mm² |
| Flexible Conductor Capacity | 1–16mm² |
| Operating Temperature | -25°C to +70°C |
| Electrical Endurance | 10,000 Cycles |
| Mechanical Endurance | 20,000 Operations |
| Overcurrent Protection | Separate Protective Device Required |
Heat Pump Consumer Units and RCD Protection
When planning a heat pump installation, the complete circuit protection arrangement should be considered, including the consumer unit or enclosure, residual-current protection, overcurrent protection and any additional devices specified by the system manufacturer.
Explore our Heat Pump Consumer Units for suitable distribution and enclosure options.
You can also browse our RCDs for Heat Pumps range to compare specialist protective devices for different heat pump installation requirements.
Hager B-HP Heat Pump Protection Guide
For more information about specialist Type B HP protection, residual-current characteristics and heat pump applications, read our Hager B-HP RCD Protection for Heat Pumps Guide.
Installation and Safety Considerations
The Hager CDB563HP Type B HP RCCB must be installed by a competent electrician in accordance with the manufacturer’s instructions and applicable electrical installation requirements.
The installation designer should verify the correct RCD type, rated current, upstream overcurrent protective device, prospective fault current, enclosure compatibility and the requirements of the connected heat pump.
Hager’s installation instructions must also be followed during inspection and testing. Particular care is required when carrying out insulation resistance testing because of the RCCB’s internal electronic components.
BS 7671 compliance depends on the design, installation, inspection and testing of the complete electrical installation. The use of a Type B HP RCCB alone does not establish compliance.
Frequently Asked Questions
What is the Hager CDB563HP used for?
The Hager CDB563HP Type B HP RCCB is a 63A, 30mA device designed for residual-current protection in suitable single-phase heat pump installations, particularly those with inverter-driven compressors.
Is the Hager CDB563HP suitable for Vaillant heat pumps?
Hager’s Type B HP technology has been incorporated into consumer units developed in collaboration with Vaillant UK. Hager confirms that these consumer units were tested and validated for Vaillant air source heat pump applications. However, suitability of the individual CDB563HP must be confirmed for the specific Vaillant model and installation arrangement.
What is the difference between Type B and Type B HP?
Both provide protection against AC, pulsating DC and smooth DC residual currents. Hager’s Type B HP range also features specialist high-frequency operating characteristics developed for heat pump applications.
Does the CDB563HP prevent nuisance tripping?
The specialist B-HP design helps reduce unwanted tripping associated with certain high-frequency leakage currents. However, genuine faults, excessive leakage and installation conditions can still cause the RCCB to operate.
Does the 63A RCCB provide overload protection?
No. An RCCB provides residual-current protection only. Suitable overload and short-circuit protection must be provided separately.
Is this RCCB suitable for every heat pump?
No. The appropriate RCCB must be selected according to the heat pump manufacturer’s instructions, circuit characteristics and installation requirements.
How many modules does the CDB563HP occupy?
The CDB563HP occupies four DIN rail modules and measures 85mm high, 72mm wide and 70mm deep.
Can the CDB563HP be used for three-phase heat pumps?
The CDB563HP is a 1P+N device intended for single-phase AC circuits. Three-phase circuits require an appropriately specified protective device.
Buy Hager Heat Pump Protection from Electrical4Less
Electrical4Less supplies Hager circuit protection products to electricians, heat pump installers and electrical contractors throughout the UK.
Whether you require a specialist Type B HP RCCB, heat pump consumer unit or other circuit protection equipment, explore our Hager Shop for the wider product range.
For assistance selecting suitable equipment, contact the Electrical4Less team in Fulham with details of the heat pump model and installation requirements.
