10A 4 Pole 10kA MCB D Curve – WKC410D
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC410D is a 10A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral protection. With its D Curve trip profile, this breaker is built for heavy inrush load circuits such as transformers, welders, industrial motors, and machinery in commercial and industrial systems, solar PV setups, and...
The WKC410D is a 10A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral protection. With its D Curve trip profile, this breaker is built for heavy inrush load circuits such as transformers, welders, industrial motors, and machinery in commercial and industrial systems, solar PV setups, and EV charging infrastructure.
With a 10kA breaking capacity, the WKC410D ensures overload and short-circuit protection while disconnecting all three phases and neutral. It is DIN-rail mounted, bi-directional, and fully compliant with BS 7671 (18th Edition).
Installer Tip: The 10A D Curve breaker is typically specified for circuits with very high inrush, such as transformers and welders. Always confirm system fault current ≤10kA.
Key Features
- 10A 4 Pole MCB – D Curve characteristic
- 10kA breaking capacity – for heavy-duty circuits
- Neutral isolation: 4P disconnection (L1, L2, L3, N)
- Bi-directional feed: install top or bottom
- DIN-rail mounted: 18mm per pole
- Complies with BS 7671 (18th Edition)
Compare WKC 4 Pole 10kA MCBs (D Curve)
| Model | Rating | Curve | Breaking Capacity |
|---|---|---|---|
| WKC406D | 6A | D Curve | 10kA |
| WKC410D (This Product) | 10A | D Curve | 10kA |
| WKC416D | 16A | D Curve | 10kA |
| WKC420D | 20A | D Curve | 10kA |
When should I choose a D Curve breaker?
D Curve breakers are required for circuits with very high inrush currents such as welders, transformers, or heavy-duty motors.
What’s the difference between C Curve and D Curve?
C Curve handles moderate inrush (motors, pumps), while D Curve tolerates very high inrush, making it suitable for industrial-grade equipment.
Is the WKC410D suitable for EV charging setups?
Yes — particularly for industrial EV systems with heavy inrush demands, as long as fault levels ≤10kA.
Does it comply with UK standards?
Yes, it is fully compliant with BS 7671 (18th Edition) and IEC/EN 60898-1.
- Model: WKC410D
- Type: Miniature Circuit Breaker (MCB)
- Current Rating: 10A
- Curve: D Curve
- Poles: 4P (L1, L2, L3 + Neutral)
- Breaking Capacity: 10kA
- Mounting: 35mm DIN rail, 18mm width per pole
- Dimensions: Approx. 72mm (W) x 90mm (H) x 77mm (D)
- Compliance: BS 7671 (18th Edition), IEC/EN 60898-1
- Brand: WCED
The WKC410D must be installed by a qualified electrician under BS 7671 wiring regulations.
- Mount on 35mm DIN rail (18mm per pole)
- Ensure prospective fault current ≤10kA
- For heavy inrush load circuits (D Curve)
- Tighten terminals to correct torque
- Provide space for 4P switching in the enclosure
