63A 4 Pole 10kA MCB D Curve – WKC463D
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC463D is the 63A 4 pole 10kA Miniature Circuit Breaker (MCB) in the WKC range, designed for three-phase + neutral protection. With a D Curve trip characteristic, it is built for very high inrush circuits such as welders, transformers, compressors, large motors, and heavy industrial machinery. It is widely...
The WKC463D is the 63A 4 pole 10kA Miniature Circuit Breaker (MCB) in the WKC range, designed for three-phase + neutral protection. With a D Curve trip characteristic, it is built for very high inrush circuits such as welders, transformers, compressors, large motors, and heavy industrial machinery. It is widely specified for industrial distribution boards, EV charging infrastructure, and solar PV systems.
Rated at 10kA breaking capacity, the WKC463D ensures reliable overload and short-circuit protection while providing full isolation of all three phases and neutral. It is DIN-rail mountable, bi-directional, and manufactured to BS 7671 (18th Edition) standards.
Installer Tip: The 63A D Curve is the largest in this series — ideal for heavy-duty industrial loads with extreme inrush, such as welding shops, compressor systems, or motor-driven equipment. Confirm that fault current ≤10kA before installation.
Key Features
- 63A 4 Pole MCB – D Curve trip profile
- 10kA breaking capacity – for industrial fault levels
- Four-pole protection: L1, L2, L3 + Neutral
- Bi-directional feed: top or bottom install
- DIN-rail mounting: 18mm per pole
- Complies with BS 7671 (18th Edition)
Compare WKC 4 Pole 10kA MCBs (D Curve)
| Model | Rating | Curve | Breaking Capacity |
|---|---|---|---|
| WKC450D | 50A | D Curve | 10kA |
| WKC463D (This Product) | 63A | D Curve | 10kA |
What is the WKC463D used for?
It’s designed for heavy industrial loads with extreme inrush currents, such as welders, compressors, transformers, and large motors.
Why use a D Curve breaker over C Curve?
D Curve breakers tolerate very high inrush currents, avoiding nuisance tripping in demanding industrial applications.
Is the WKC463D suitable for EV or PV systems?
Yes — it is suitable for EV infrastructure and solar PV setups where heavy inrush loads are present, as long as system 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: WKC463D
- Type: Miniature Circuit Breaker (MCB)
- Current Rating: 63A
- Curve: D Curve
- Poles: 4P (L1, L2, L3 + Neutral)
- Breaking Capacity: 10kA
- Mounting: 35mm DIN rail, 18mm per pole
- Dimensions: Approx. 72mm (W) x 90mm (H) x 77mm (D)
- Compliance: BS 7671 (18th Edition), IEC/EN 60898-1
- Brand: WCED
The WKC463D must be installed by a qualified electrician under BS 7671 wiring standards.
- DIN rail mount (18mm per pole)
- Confirm system fault current ≤10kA
- Use for very high inrush load circuits (D Curve)
- Tighten terminals to correct torque
- Ensure panel space for 4P breakers
