High Immunity RCBO – 20A B Curve, Type A, 30mA
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£28.20 inc. VAT
40A B Curve Type B HP Heat Pump RCBO – Single Module (WHR140B-030)
£154.70
ex VAT
£185.64 inc VAT
SKU: WHR140B-030
Currently unavailable
The WHR140B-030 is a 40A B curve Type B HP heat pump RCBO combining overcurrent and residual-current protection in a single 18mm module. It is intended for inverter-driven heat pump circuits where the equipment manufacturer or circuit design calls for Type B residual-current protection. Its Type B HP characteristic is...
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Description
The WHR140B-030 is a 40A B curve Type B HP heat pump RCBO combining overcurrent and residual-current protection in a single 18mm module. It is intended for inverter-driven heat pump circuits where the equipment manufacturer or circuit design calls for Type B residual-current protection.
Its Type B HP characteristic is designed to detect smooth DC residual currents and operate in the high-frequency conditions associated with modern heat pump systems. The B overcurrent curve is the device's thermal-magnetic trip characteristic and is separate from its Type B residual-current classification. Confirm that both the 40A rating and B curve suit the connected equipment, cable and circuit design.
Installer note: “Type B HP” describes the residual-current detection characteristic; “B curve” describes the overcurrent trip characteristic. These are different specifications.
- 40A B curve RCBO for correctly specified heat pump circuits
- Type B HP residual-current protection for smooth DC and high-frequency residual currents
- 30mA sensitivity for additional protection
- 10kA breaking capacity
- 1P+N with switched live and neutral
- Single-module, 18mm format for DIN rail assemblies
- Bidirectional design
- Manufactured to IEC/BS EN 62423 and IEC/BS EN 61009-1
The WHR range is engineered for operation at frequencies above 20kHz, with the manufacturer stating a minimum tripping threshold of 150mA for frequencies above 1kHz. Selection must follow the heat pump manufacturer's instructions and the requirements of the installation design.
Compare WHR Heat Pump RCBOs
Use the table below to compare the listed WHR models by rated current and overcurrent curve. All models are Type B HP residual-current devices; the B or C curve shown here refers to the separate overcurrent characteristic.
| Product Code | Rated Current | Overcurrent Curve |
|---|---|---|
| WHR116B-030 | 16A | B curve |
| WHR116C-030 | 16A | C curve |
| WHR120B-030 | 20A | B curve |
| WHR120C-030 | 20A | C curve |
| WHR125B-030 | 25A | B curve |
| WHR125C-030 | 25A | C curve |
| WHR132B-030 | 32A | B curve |
| WHR132C-030 | 32A | C curve |
| WHR140B-030 (This Product) | 40A | B curve |
| WHR140C-030 | 40A | C curve |
Compare further Type B residual-current protection, browse the full RCBO range, or view complete heat pump consumer units.
Technical specs
| Product code | WHR140B-030 |
| Device type | Electronic Type B HP RCBO |
| Rated current | 40A |
| Overcurrent characteristic | B curve |
| Residual-current type | Type B HP |
| Poles | 1P+N, switched live and neutral |
| Module width | Single module, 18mm |
| Rated voltage | 230V |
| Rated frequency | 50/60Hz |
| Residual-current sensitivity | 30mA |
| Breaking capacity | 10kA |
| High-frequency performance | Manufacturer tested for operation above 20kHz |
| Threshold above 1kHz | 150mA minimum, as stated by the manufacturer |
| Break time at IΔn | ≤0.1 seconds |
| Rated residual making and breaking capacity | 3,000A |
| Rated impulse withstand voltage | 4kV |
| Insulation voltage | 500V |
| Bidirectional | Yes |
| Protection degree | IP20 |
| Mounting | 35mm DIN rail to EN 60715 |
| Connection | From bottom |
| Terminal capacity | Top cable: 10mm²; bottom cable: 16mm² |
| Tightening torque | 2.5Nm |
| Ambient temperature | -5°C to +40°C |
| Storage temperature | -25°C to +70°C |
| Electrical / mechanical life | 2,000 / 10,000 operations |
| Standards | IEC 62423 / BS EN 62423; IEC 61009-1 / BS EN 61009-1 |
Installation notes
The WHR140B-030 is a specialist 40A B curve Type B HP RCBO for heat pump circuits. Product selection and installation must be completed by a qualified electrician in line with the connected equipment manufacturer's instructions and the installation design.
- Confirm that the 40A rating, B curve and Type B HP residual-current characteristic are specified for the circuit.
- Mount on a 35mm DIN rail in a compatible assembly with a suitable busbar and terminal arrangement.
- The device is 1P+N with switched live and neutral and is connected from the bottom.
- Tighten terminals to the manufacturer's stated torque of 2.5Nm.
- Account for the manufacturer's temperature-derating data where the enclosure temperature differs from the 30°C reference temperature.
- Complete inspection and testing in accordance with the equipment instructions and applicable installation requirements.
FAQs
What does Type B HP mean on the WHR140B-030?
Type B HP describes the RCBO's residual-current detection characteristic. The manufacturer states that the WHR range detects smooth DC residual currents and is designed for the high-frequency conditions associated with inverter-driven heat pumps.
Is Type B HP the same as B curve?
No. Type B HP refers to residual-current behaviour. The B curve describes the overcurrent trip characteristic. Both must be selected to suit the equipment and circuit design.
Can the WHR140B-030 be used with any heat pump?
Not automatically. Check the heat pump manufacturer's protective-device requirements and the circuit design before selecting the RCBO. This product should only be used where its 40A rating, B curve, 30mA sensitivity and Type B HP characteristic are appropriate.
What residual currents is this RCBO designed to detect?
As a Type B HP device, it is designed to detect AC, pulsating DC and smooth DC residual currents. The WHR datasheet also states operation at frequencies above 20kHz for heat pump applications.
Will it fit a standard consumer unit?
The device uses a single-module 18mm format and mounts on a standard 35mm DIN rail. Confirm physical, busbar and assembly compatibility before installation.
Which standards are stated for the WHR range?
The manufacturer lists IEC 62423 / BS EN 62423 and IEC 61009-1 / BS EN 61009-1. Final installation must also follow the applicable requirements of BS 7671.
