WCED WRB120C-030 Bi-Directional RCBO
The WCED WRB120C-030 Bi-Directional RCBO is a 20A C Curve protective device from the Whitecliffe Electrical WRB1 range. Designed to combine overload, short-circuit and Type A residual current protection in a single module, it offers 30mA residual operating sensitivity and a 6kA breaking capacity for suitably designed domestic and commercial electrical circuits.
With high-immunity residual current protection and bi-directional capability, this WCED RCBO provides a compact circuit protection option for modern distribution boards, including suitable solar PV and electric vehicle charging applications.
Key Features – WCED WRB120C-030 Bi-Directional RCBO
- 20A rated current with C Curve tripping characteristic
- Type A high-immunity residual current protection
- 30mA residual operating sensitivity
- 6kA rated breaking capacity
- Bi-directional design for suitable PV and EV systems
- 1P+N arrangement with switched live and neutral
- Compact single-module housing, approximately 18mm wide
- Electronic residual current detection with thermal-magnetic overcurrent protection
- Bi-connect terminal arrangement for compatible cable and busbar connections
- 35mm DIN rail mounting
- IEC 61009-1 and EN 61009-1 standards
20A C Curve Circuit Protection
The WRB120C-030 provides 20A overcurrent protection with a C Curve characteristic. C Curve devices are commonly considered for circuits with moderate inrush currents, provided the installation meets the applicable fault protection and disconnection requirements.
By combining miniature circuit breaker and residual current protection functions, the RCBO allows an individual circuit to be protected independently, helping maintain service to unaffected circuits when a fault occurs.
Bi-Directional Operation for PV and EV Applications
The WCED WRB120C-030 Bi-Directional RCBO belongs to the manufacturer’s WRB1 range, designed for bi-directional use in photovoltaic and electric vehicle systems.
This capability allows the device to be considered where circuit power flow may change direction. Correct device selection is essential, particularly where the installation includes inverter equipment, EV charging controls or additional DC residual current protection requirements.
The manufacturer’s specified connection arrangement and terminal markings must be followed. The WRB1 technical datasheet specifies bottom connection.
Type A High-Immunity Residual Current Detection
Unlike a conventional Type AC device, this Type A RCBO responds to both sinusoidal AC and pulsating DC residual fault currents. It is therefore suitable for consideration in a wider range of electrical installations containing modern electronic equipment.
The 30mA residual current sensitivity provides additional protection against electric shock when correctly installed. The high-immunity specification is part of the manufacturer’s WRB1 range design.
Switched Live and Neutral
The WRB120C-030 features a 1P+N configuration with switched live and neutral. This means both conductors are disconnected when the device operates, supporting circuit isolation and inspection procedures.
This arrangement can also make certain insulation resistance testing tasks more convenient, depending on the selected test method and the equipment connected to the circuit.
Compact Single-Module Construction
The single-module housing occupies approximately 18mm of DIN rail space, making the WRB120C-030 suitable for compatible compact consumer units and distribution equipment.
Bi-connect terminals accommodate the manufacturer’s specified cable and busbar arrangements, including compatible pin-type and fork/U-type connections. The specified terminal tightening torque is 2.5Nm.
Technical Specifications – WCED WRB120C-030 Bi-Directional RCBO
- Brand: WCED Whitecliffe Electrical
- Manufacturer Part Number: WRB120C-030
- Product Range: WRB1
- Product Type: Electronic Bi-Directional RCBO
- Rated Current: 20A
- Tripping Characteristic: C Curve
- Residual Current Classification: Type A High Immunity
- Rated Residual Operating Current: 30mA
- Rated Breaking Capacity: 6kA
- Number of Poles: 1P+N (Switched Live and Neutral)
- Rated 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
- Degree of Protection: IP20
- Ambient Operating Temperature: -5°C to +40°C
- Storage Temperature: -25°C to +70°C
- Reference Temperature: 30°C
- Top Cable Terminal Capacity: 10mm²
- Bottom Cable Terminal Capacity: 16mm²
- Busbar Terminal Capacity: 10mm²
- Terminal Tightening Torque: 2.5Nm
- Mounting: DIN Rail EN 60715 (35mm)
- Manufacturer-Specified Connection: From Bottom
- Applicable Standards: IEC 61009-1 / EN 61009-1
WCED Whitecliffe Consumer Units and Circuit Protection
The WCED WRB120C-030 Bi-Directional RCBO forms part of the Whitecliffe Electrical circuit protection range. Explore our WCED Consumer Units or browse the complete WCED Whitecliffe range at Electrical4Less.
Before installation, verify that the RCBO is compatible with the selected consumer unit, circuit design and connected equipment. Solar PV and EV charging applications may require additional protective measures depending on the system specification.
