High Immunity RCBO – 20A B Curve, Type A, 30mA
£23.50 ex. VAT
£28.20 inc. VAT
Single Module 2 Pole RCBO 16A B Curve WRN16B-030
£18.65
ex VAT
£22.38 inc VAT
SKU: WRN16B-030
The WRN16B-030 is a compact 16A Type A RCBO in a single-module, 2-pole format - combining residual current (RCD) and overcurrent (MCB) protection in one device. Designed to detect both AC and pulsating DC leakage, it ensures compliance with 18th Edition BS 7671 wiring regulations across domestic and commercial installs....
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Description
The WRN16B-030 is a compact 16A Type A RCBO in a single-module, 2-pole format - combining residual current (RCD) and overcurrent (MCB) protection in one device. Designed to detect both AC and pulsating DC leakage, it ensures compliance with 18th Edition BS 7671 wiring regulations across domestic and commercial installs. With a switched live and neutral, the WRN range guarantees full disconnection during a fault, isolating only the affected circuit and keeping healthy circuits in service.
Installer Tip: The WRN range comes with a switched neutral as standard - essential for full circuit isolation and safer maintenance.
- 16A B-Curve RCBO: Handles standard domestic and light commercial loads
- Type A protection: Trips on AC and pulsating DC residual currents
- Space-saving design: Single 18mm module width
- 2-pole with switched neutral: Disconnects both conductors on fault
- Minimises disruption: Isolates only the faulty circuit
- BS 7671 compliant: Suitable for Amendment 2 installs
Technical specs
| SKU | WRN16B-030 |
| Device Type | Type A RCBO |
| Current Rating | 16A |
| Curve | B 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
Fit this RCBO into any standard DIN rail distribution board. Ensure correct torque on terminals and confirm residual tripping with an RCBO tester. Final installation must be carried out by a qualified electrician.
- Mounts on a single 18mm DIN rail slot
- Connect to standard busbar layouts
- Switched neutral provides safer isolation during testing
- Test button provided for routine inspection
FAQs
What makes this different from a Type AC RCBO?
A Type A RCBO protects against both AC and pulsating DC residual currents, while Type AC only covers standard AC. Type A is required for most modern domestic circuits with electronics, EV chargers, and inverter-driven equipment.
Can I use this in a standard consumer unit?
Yes. Its single-module 18mm width makes it compatible with standard DIN rail consumer units. Check available space and ensure load rating matches your circuit design.
Does the WRN16B-030 isolate both live and neutral?
Yes — the built-in switched neutral ensures both conductors are disconnected during a fault, providing safer isolation and meeting the latest UK wiring standards.
When should I choose a C-curve instead of this B-curve?
Choose the WRN16C-030 C Curve RCBO if the circuit has higher inrush loads such as pumps or motors, where a B-curve may nuisance trip.
