WCED WRB140C-030 Bi-Directional RCBO
The WCED WRB140C-030 Bi-Directional RCBO is a 40A C Curve, Type A high-immunity protective device from the Whitecliffe Electrical WRB1 range. Combining residual current, overload and short-circuit protection in a compact single-module design, this RCBO offers 30mA residual current sensitivity and a 6kA breaking capacity for domestic and commercial electrical installations.
Designed for bi-directional operation, the WRB140C-030 Bi-Directional RCBO is also suitable for consideration in solar PV and electric vehicle charging installations where power may flow in either direction, subject to correct device selection and the manufacturer’s connection requirements.
Key Features – WCED WRB140C-030 Bi-Directional RCBO
- 40A rated current with C Curve tripping characteristic
- Type A high-immunity residual current protection
- 30mA residual operating sensitivity
- 6kA rated short-circuit breaking capacity
- Bi-directional design for suitable solar PV and EV circuits
- 1P+N configuration with switched live and neutral
- Compact single-module design, approximately 18mm wide
- Electronic RCBO with thermal-magnetic overcurrent protection
- Bi-connect terminals for compatible cable and busbar connections
- 35mm DIN rail mounting
- Manufactured to IEC 61009-1 and EN 61009-1 standards
Bi-Directional Protection for Solar PV and EV Applications
The WRB1 range has been developed for bi-directional applications, including appropriately designed photovoltaic systems and electric vehicle charging circuits.
The WRB140C-030 Bi-Directional RCBO combines protection against overcurrents and earth leakage in one device. Its C Curve characteristic makes it suitable for circuits with moderate inrush currents, provided the protective device is correctly coordinated with the installation.
Although designed for bi-directional operation, the manufacturer’s terminal markings and connection instructions must be followed. Bi-directional capability does not remove the need to verify suitability for the particular PV inverter or EV charging equipment.
Type A High-Immunity Residual Current Protection
The WCED WRB140C-030 uses Type A residual current detection, responding to sinusoidal AC and pulsating DC residual currents. This makes it suitable for a wider range of modern electrical equipment than traditional Type AC devices.
The high-immunity design is intended to improve operational reliability, while the 30mA residual current rating provides additional protection against electric shock when installed in accordance with applicable wiring regulations.
Switched Live and Neutral
Unlike RCBOs with an unswitched neutral, the WRB1 range incorporates switched live and neutral as standard. Operation of the device disconnects both conductors of the protected circuit, providing double-pole isolation functionality within a single-module 1P+N design.
This arrangement can simplify circuit isolation and certain insulation resistance testing procedures, helping electricians carry out inspection, testing and maintenance more efficiently.
Compact Design and Bi-Connect Terminals
The WRB140C-030 Bi-Directional RCBO occupies a single module on a standard 35mm DIN rail, helping maximise available space in compatible consumer units and distribution boards.
Its bi-connect terminal arrangement accommodates compatible cable, pin-type and fork/U-type busbar connections, offering installation flexibility. The manufacturer specifies bottom connection, with terminal capacities and tightening torque requirements detailed below.
Technical Specifications – WCED WRB140C-030 Bi-Directional RCBO
- Brand: WCED Whitecliffe Electrical
- Manufacturer Part Number: WRB140C-030
- Product Range: WRB1
- Product Type: High-Immunity Bi-Directional RCBO
- Rated Current: 40A
- Tripping Characteristic: C Curve
- Residual Current Classification: Type A
- Rated Residual Operating Current: 30mA
- Rated Breaking Capacity: 6kA
- Poles: 1P+N, Switched Live and Neutral
- Rated Operational Voltage: 230V AC
- Rated Frequency: 50/60Hz
- Rated Insulation Voltage: 500V
- Rated Residual Making and Breaking Capacity: 3000A
- Rated Impulse Withstand Voltage: 4kV
- Residual Current Break Time at IΔn: ≤0.1 seconds
- Dielectric Test Voltage: 2kV for 1 minute
- Electrical Endurance: 2,000 operations
- Mechanical Endurance: 10,000 operations
- Contact Position Indicator: Yes
- Protection Rating: IP20
- Operating Temperature: -5°C to +40°C
- Storage Temperature: -25°C to +70°C
- DIN Rail Mounting: EN 60715, 35mm
- Top Cable Terminal Capacity: 10mm²
- Bottom Cable Terminal Capacity: 16mm²
- Busbar Terminal Capacity: 10mm²
- Terminal Tightening Torque: 2.5Nm
- Manufacturer-Specified Connection: From Bottom
- Applicable Standards: IEC 61009-1 / EN 61009-1
WCED Whitecliffe Consumer Units and Circuit Protection
The WRB140C-030 Bi-Directional RCBO forms part of the WCED Whitecliffe range of circuit protection devices. Discover our WCED Consumer Units or browse the complete WCED Whitecliffe product range at Electrical4Less.
Always verify compatibility with the consumer unit, supply arrangement and connected equipment before installation. For EV charging applications, additional residual DC fault protection may be required depending on the charge point specification.
