20A 2 Pole 10kA MCB – D Curve (WKC220D)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC220D is a 20 A 2 Pole 10 kA Miniature Circuit Breaker (MCB) designed for high-inrush circuits such as compressors, fan motors, and transformer-fed control panels. The D-curve tripping profile tolerates up to 20× rated current at start-up, preventing nuisance tripping on inductive or motor-driven loads. Dual-pole operation ensures...
The WKC220D is a 20 A 2 Pole 10 kA Miniature Circuit Breaker (MCB) designed for high-inrush circuits such as compressors, fan motors, and transformer-fed control panels. The D-curve tripping profile tolerates up to 20× rated current at start-up, preventing nuisance tripping on inductive or motor-driven loads.
Dual-pole operation ensures both live conductors are disconnected simultaneously, meeting BS EN 60898-1 standards and 18th Edition Wiring Regulations. Its 36 mm compact housing mounts easily on any 35 mm DIN rail across industrial enclosures, consumer units, or commercial boards.
Installer Tip: The 20 A D-curve breaker is ideal for compressor circuits and high-inrush loads. For lighting or resistive circuits, the C-curve model is usually sufficient.
Key Features
- 20 A rated – ideal for compressors, fans, and industrial control systems
- 10 kA breaking capacity – safe for commercial fault levels
- 2-pole isolation – disconnects both live conductors simultaneously
- D-curve tripping – tolerates 10–20× rated current at startup
- Bi-directional terminals – top or bottom feed connection
- 36 mm (2-module) DIN-rail mount
- Certified to IEC/EN 60898-1 for 18th Edition compliance
Compare 2 Pole 10 kA MCB Variants
| Model | Rating | Curve |
|---|---|---|
| WKC220B | 20 A | B Curve |
| WKC220C | 20 A | C Curve |
| WKC220D (This Product) | 20 A | D Curve |
What is a D-curve MCB used for?
D-curve breakers are used where startup current exceeds normal limits – such as with compressors, transformers, or heavy inductive loads.
Does this MCB isolate both conductors?
Yes – dual-pole design disconnects both live lines simultaneously for full safety.
Can it be used for fan or pump circuits?
Yes – it’s ideal for fan motors, pumps, and automation systems with high inrush current.
Is this compliant with BS EN 60898-1?
Yes – fully tested to BS EN 60898-1 and compliant with the 18th Edition Wiring Regulations.
- Model: WKC220D
- Poles: 2
- Rated Current: 20 A
- Curve Type: D
- Breaking Capacity: 10 kA
- Operating Voltage: 230/400 V AC
- Mounting: 35 mm DIN rail (EN 60715)
- Width: 36 mm (2 modules)
- Standard: IEC/EN 60898-1
- Applications: Compressors, motors, fans, transformer circuits
To be installed by a qualified electrician in accordance with BS 7671. Verify circuit design and inrush characteristics before selecting a D-curve device.
- Mount securely on 35 mm DIN rail (EN 60715)
- Torque terminal screws to 2.0–2.5 Nm
- Check insulation resistance and polarity prior to energising
- Label protected circuits on the distribution schedule
