63A 4 Pole 10kA MCB B Curve – WKC463B
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC463B is a 63A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral protection. With its B Curve trip characteristic, it is best suited to resistive load applications such as large socket outlet groups, small power distribution panels, and lighting circuits in commercial three-phase systems, EV...
The WKC463B is a 63A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral protection. With its B Curve trip characteristic, it is best suited to resistive load applications such as large socket outlet groups, small power distribution panels, and lighting circuits in commercial three-phase systems, EV distribution boards, and solar PV setups.
Offering a 10kA breaking capacity, the WKC463B provides dependable overload and short-circuit protection with full 4-pole disconnection. It is bi-directional, DIN-rail mounted, and built to BS 7671 (18th Edition) compliance.
Installer Tip: The 63A B Curve is the largest unit in this series. Ideal for high-load resistive circuits in commercial environments. Always confirm the installation fault current is within 10kA before use.
Key Features
- 63A 4 Pole MCB – B Curve trip profile
- 10kA breaking capacity – tested for commercial & industrial boards
- Neutral switching: full 4P protection (L1, L2, L3, N)
- Bi-directional feed: top or bottom entry
- DIN-rail mounting: 18mm width per pole
- Meets BS 7671 (18th Edition) compliance
Compare WKC 4 Pole 10kA MCBs (B Curve)
| Model | Rating | Curve | Breaking Capacity |
|---|---|---|---|
| WKC450B | 50A | B Curve | 10kA |
| WKC463B (This Product) | 63A | B Curve | 10kA |
What applications is the WKC463B best for?
It is suited for high-demand resistive circuits such as large socket banks, small power boards, and lighting groups in commercial installs.
Why would I choose a 4-pole breaker?
It provides full disconnection of neutral as well as all three phases, ensuring compliance for three-phase + N circuits.
Is the WKC463B suitable for EV and PV installs?
Yes, if the loads are resistive and fault levels ≤10kA. For inductive or inrush-heavy circuits, a C or D Curve breaker should be used instead.
Does it meet UK standards?
Yes — it complies with BS 7671 (18th Edition) and IEC/EN 60898-1.
- Model: WKC463B
- Type: Miniature Circuit Breaker (MCB)
- Current Rating: 63A
- Curve: B Curve
- Poles: 4P (L1, L2, L3 + Neutral)
- Breaking Capacity: 10kA
- Mounting: 35mm DIN rail, 18mm per module
- Dimensions: Approx. 72mm (W) x 90mm (H) x 77mm (D)
- Standards: BS 7671 (18th Edition), IEC/EN 60898-1
- Brand: WCED
The WKC463B must be installed by a qualified electrician under BS 7671 requirements.
- Mount on 35mm DIN rail (18mm per pole)
- Confirm prospective fault current ≤10kA
- Use only for resistive loads (B Curve)
- Tighten terminals to manufacturer torque specification
- Provide adequate enclosure space for 4-pole devices
