3-Pole Type A RCBO – 20A C Curve 30mA 10kA (WRT320C-030)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WRT320C-030 is a 3-pole Type A RCBO combining residual current protection and overcurrent protection in a compact 3-module device. Rated at 20A with a C curve and 30mA sensitivity, it provides reliable protection against overload, short-circuit, and earth leakage faults across all three phases. This RCBO is designed for...
The WRT320C-030 is a 3-pole Type A RCBO combining residual current protection and overcurrent protection in a compact 3-module device. Rated at 20A with a C curve and 30mA sensitivity, it provides reliable protection against overload, short-circuit, and earth leakage faults across all three phases.
This RCBO is designed for three-phase commercial, industrial, and advanced residential installations where modern electronic loads are present. Type A protection allows it to safely detect AC residual currents and pulsating DC components, making it suitable for equipment such as HVAC systems, control gear, inverter-driven loads, and commercial distribution boards.
Installer note: The switched neutral design disconnects L1, L2, L3, and N together, improving isolation safety and simplifying insulation resistance testing during commissioning.
- 3-pole Type A RCBO with integrated overcurrent protection
- 20A rated current with C curve characteristic
- 30mA residual current sensitivity for additional protection
- 10kA short-circuit breaking capacity
- Switched neutral for full disconnection of live conductors
- Compact 3-module DIN rail format
- Clear IN / OUT / LOAD terminal markings
| Part Code | Rating | Curve | Residual Current |
|---|---|---|---|
| WRT320C-030 | 20A | C Curve | 30mA |
| WRT332B-030 | 32A | B 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 WRT320C-030 is well suited to three-phase circuits where Type A residual current protection and reliable disconnection are required in a single compact device.
What does Type A protection mean?
Type A RCBOs detect AC residual currents and pulsating DC components, making them suitable for modern electronic and inverter-based loads.
Is the neutral switched on this RCBO?
Yes. The neutral is switched, providing full disconnection of L1, L2, L3, and N.
Can this be used on three-phase EV or PV systems?
It is designed for three-phase circuits with modern electronic loads. Always confirm suitability with the equipment manufacturer and installation requirements.
What is the breaking capacity?
The WRT320C-030 has a rated short-circuit breaking capacity of 10kA.
Is this supplied pre-wired?
No. This is a DIN-rail-mounted RCBO and must be wired as part of the distribution board installation.
- Device Type: 3-Pole RCBO
- Residual Current Type: Type A
- Rated Current: 20A
- Tripping Curve: C 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. Correct orientation of supply and load terminals is essential.
- Install on a standard 35mm DIN rail
- Observe IN / OUT / LOAD markings carefully
- Do not connect supply conductors to load terminals
- Switched neutral allows full isolation during testing
- Verify curve selection matches connected load characteristics
