High Immunity Type A Mini RCBO – 25A C Curve (WRB125C-030)
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WRB125C-030 High Immunity Type A Mini RCBO is a 25A C Curve protective device designed for circuits with motors, pumps, and appliances that generate higher inrush currents. Its compact 18mm design combines overload, short-circuit, and residual current protection in a single unit. With 30mA Type A sensitivity and high...
The WRB125C-030 High Immunity Type A Mini RCBO is a 25A C Curve protective device designed for circuits with motors, pumps, and appliances that generate higher inrush currents. Its compact 18mm design combines overload, short-circuit, and residual current protection in a single unit. With 30mA Type A sensitivity and high immunity against nuisance tripping, it ensures stable fault protection for EV chargers, renewable installs, and commercial equipment.
Installer Tip: Choose the 25A C Curve when protecting motor-driven or inrush-heavy circuits. For standard socket or small appliance loads, the 25A B Curve variant may be more suitable.
Key Features
- 25A rated current – protects medium-load circuits
- C Curve tripping – handles higher inrush currents
- Type A sensitivity – detects AC + pulsating DC leakage
- High immunity design – reduces false tripping from harmonics
- Compact 18mm width – saves valuable board space
- Switched live & neutral – provides complete circuit isolation
- Bi-directional – suitable for PV and EV installs
Compare Mini RCBO Variants
| Model | Rated Current | Curve | Type | Width |
|---|---|---|---|---|
| WRB125B-030 | 25A | B Curve | Type A, High Immunity | 18mm |
| WRB125C-030 (This Product) | 25A | C Curve | Type A, High Immunity | 18mm |
What circuits is the 25A C Curve best for?
It’s suited to motor-driven circuits, pumps, EV chargers, and appliances with higher inrush current at start-up.
Why would I use the B Curve instead?
The 25A B Curve is best for general socket and appliance loads without heavy inrush demand.
Does the WRB125C-030 meet 18th Edition compliance?
Yes – with 30mA Type A protection and high immunity design, it complies fully with UK wiring regulations.
Does it switch both conductors?
Yes – both live and neutral are switched, providing full isolation when tripped.
- Product Code: WRB125C-030
- Rated Current: 25A
- Curve: C Curve
- Breaking Capacity: 6kA
- Poles: 1P + switched neutral
- Trip Sensitivity: 30mA
- Earth Leakage Detection: Type A (AC + pulsating DC)
- Module Width: 18mm
- Dimensions: 18 × 90 × 77 mm
- Standards: BS EN 61009-1
The WRB125C-030 is suitable for DIN rail consumer units and compact distribution boards. Installation must be completed by a qualified electrician.
- Best for motors, pumps, EV chargers, and circuits with high inrush loads
- C Curve tripping – delays tripping to handle start-up surges
- Compact 18mm width – saves ways in the board
- Switched neutral simplifies insulation resistance testing
- Complies with 18th Edition requirements for Type A protection
