3-Pole Type A RCBO – 32A B Curve 30mA 10kA (WRT332B-030)
18th Ed. Compliant
2-Year Warranty
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The WRT332B-030 is a 3-pole Type A RCBO providing combined residual current and overcurrent protection for three-phase circuits. Rated at 32A with a B curve and 30mA sensitivity, it protects against overload, short-circuit, and earth leakage faults in a compact 3-module DIN rail format. Type A residual current protection allows...
The WRT332B-030 is a 3-pole Type A RCBO providing combined residual current and overcurrent protection for three-phase circuits. Rated at 32A with a B curve and 30mA sensitivity, it protects against overload, short-circuit, and earth leakage faults in a compact 3-module DIN rail format.
Type A residual current protection allows the device to detect AC residual currents and pulsating DC components, making it suitable for modern electrical installations with electronic loads. The B curve tripping characteristic is ideal for circuits with lower inrush currents, such as lighting circuits, control systems, and general-purpose three-phase loads.
Installer note: The switched neutral design disconnects L1, L2, L3, and N simultaneously, improving isolation safety and simplifying insulation resistance testing.
- 3-pole Type A RCBO with integrated overcurrent protection
- 32A rated current with B curve characteristic
- 30mA residual current sensitivity
- 10kA short-circuit breaking capacity
- Switched neutral for full disconnection of live conductors
- Compact 3-module DIN rail design
- Clear IN / OUT / LOAD terminal markings
| Part Code | Rating | Curve | Residual Current |
|---|---|---|---|
| WRT332B-030 | 32A | B Curve | 30mA |
| WRT320C-030 | 20A | C Curve | 30mA |
| WRT332C-030 | 32A | C Curve | 30mA |
| WRT340B-030 | 40A | B Curve | 30mA |
| WRT340C-030 | 40A | C Curve | 30mA |
| WRT350C-030 | 50A | C Curve | 30mA |
The WRT332B-030 is a strong choice for three-phase circuits where Type A protection and a B curve response are required to protect sensitive or low inrush loads.
What is a B curve RCBO used for?
B curve RCBOs trip more quickly under fault conditions and are suited to circuits with low inrush currents, such as lighting and control circuits.
Does this RCBO switch the neutral?
Yes. The neutral is switched, ensuring full disconnection of all live conductors.
Is this suitable for electronic or inverter-based loads?
Type A protection allows detection of pulsating DC components commonly produced by modern electronic equipment.
What is the breaking capacity of this device?
The WRT332B-030 has a rated breaking capacity of 10kA.
Is this supplied pre-wired?
No. This RCBO is supplied as a DIN-rail-mounted device and must be wired during board assembly.
- Device Type: 3-Pole RCBO
- Residual Current Type: Type A
- Rated Current: 32A
- Tripping Curve: B Curve
- Residual Current Sensitivity: 30mA
- Breaking Capacity: 10kA
- Number of Modules: 3
- Neutral: Switched
- Mounting: DIN rail (EN 60715)
- Rated Voltage: 230V AC
- Frequency: 50/60Hz
- Compliance: IEC / EN 61009-1
This RCBO must be installed by a qualified electrician as part of a three-phase distribution system. Ensure correct orientation of supply and load connections.
- Mount on a standard 35mm DIN rail
- Follow IN / OUT / LOAD markings precisely
- Do not connect incoming supply to load terminals
- Switched neutral supports full circuit isolation during testing
- Confirm B curve suitability for connected equipment
