High Immunity RCBO – 32A C Curve, Type A, 30mA
£23.50 ex. VAT
£28.20 inc. VAT
Single Module 2 Pole RCBO 20A C Curve WRN20C-030
£19.95
ex VAT
£23.94 inc VAT
SKU: WRN20C-030
The WRN20C-030 is a 20A Type A RCBO with a C-curve tripping characteristic, designed in a compact single-module, 2-pole format. It combines residual current (RCD) and overcurrent (MCB) protection in one device, detecting both AC and pulsating DC leakage currents. The switched neutral ensures complete disconnection of live and neutral...
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Description
The WRN20C-030 is a 20A Type A RCBO with a C-curve tripping characteristic, designed in a compact single-module, 2-pole format. It combines residual current (RCD) and overcurrent (MCB) protection in one device, detecting both AC and pulsating DC leakage currents. The switched neutral ensures complete disconnection of live and neutral conductors during faults, keeping installs compliant with BS 7671 (18th Edition).
Installer Tip: A 20A C-curve RCBO is often the right choice for appliance circuits or small equipment with higher inrush currents, such as pumps, HVAC, or refrigeration loads.
- 20A C-Curve RCBO: Handles higher inrush loads without nuisance tripping
- Type A protection: Detects AC and pulsating DC leakage currents
- Compact single-module width: Saves space in boards
- 2-pole with switched neutral: Disconnects live and neutral on fault
- Selective isolation: Only the faulty circuit disconnects
- 18th Edition compliant: Meets BS 7671 Amendment 2 regulations
Technical specs
| SKU | WRN20C-030 |
| Device Type | Type A RCBO |
| Current Rating | 20A |
| Curve | C Curve |
| Residual Current | 30mA |
| Poles | 2 Pole (Live + Neutral switched) |
| Module Width | 1 (18mm) |
| Dimensions | 18 × 82 × 77mm |
| Mounting | DIN rail |
| Standards | BS EN 61009-1, BS 7671 |
Installation notes
The WRN20C-030 fits any standard UK DIN rail consumer unit or distribution board. Installation must be carried out by a qualified electrician, with testing performed using an appropriate RCBO tester.
- Single 18mm DIN rail slot required
- Compatible with standard busbar layouts
- Switched neutral improves isolation and site safety
- Test button provided for routine checks
FAQs
When should I specify a 20A C-curve RCBO?
Use this model on circuits with higher inrush currents such as pumps, compressors, or HVAC equipment, where a B-curve device might nuisance trip.
Does this RCBO include switched neutral protection?
Yes. Both live and neutral conductors are disconnected on fault, ensuring safer maintenance and compliance with UK regulations.
Is this device suitable for consumer units?
Yes — the compact 18mm module width makes it compatible with most standard DIN rail consumer units.
Is it compliant with the 18th Edition?
Yes. The WRN20C-030 meets BS EN 61009-1 standards and is fully compliant with BS 7671 Amendment 2.
When should I choose a B-curve instead of this C-curve?
For socket or small appliance circuits with low inrush, the WRN20B-030 B Curve RCBO may be the more suitable option.
