63A 2 Pole 10kA MCB – D Curve (WKC263D)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC263D is a 63 A 2 Pole 10 kA Miniature Circuit Breaker (MCB) engineered for sub-mains, EV feeds, and heavy plant installations requiring high inrush tolerance and dependable protection. Its D-curve tripping profile withstands 10–20× rated current on startup, preventing nuisance trips on large inductive or transformer-based circuits. Dual-pole...
The WKC263D is a 63 A 2 Pole 10 kA Miniature Circuit Breaker (MCB) engineered for sub-mains, EV feeds, and heavy plant installations requiring high inrush tolerance and dependable protection. Its D-curve tripping profile withstands 10–20× rated current on startup, preventing nuisance trips on large inductive or transformer-based circuits.
Dual-pole isolation ensures both live conductors are disconnected together for full compliance with BS EN 60898-1. The 36 mm compact body fits any 35 mm DIN rail system, suitable for industrial enclosures, distribution boards, and EV-ready consumer units.
Installer Tip: The 63 A D-curve is the go-to for EV charging sub-mains or large plant feeds. For lower-inrush or lighting circuits, consider the C-curve version.
Key Features
- 63 A rated – ideal for sub-mains, EV feeds, and plant circuits
- 10 kA breaking capacity – handles high fault levels safely
- 2-pole isolation – disconnects both conductors simultaneously
- D-curve tripping – accommodates heavy inductive surge
- Bi-directional terminals – feed from top or bottom
- 36 mm width – 2-module DIN-rail mount
- Complies with IEC/EN 60898-1 and 18th Edition requirements
Compare 2 Pole 10 kA MCB Variants
| Model | Rating | Curve |
|---|---|---|
| WKC263B | 63 A | B Curve |
| WKC263C | 63 A | C Curve |
| WKC263D (This Product) | 63 A | D Curve |
What is a 63 A D-curve MCB used for?
Ideal for sub-mains, EV supply feeds and heavy plant circuits that produce high inrush currents.
Does it isolate both live conductors?
Yes – 2-pole operation disconnects both lines simultaneously for safe maintenance and testing.
Is this suitable for EV installations?
Yes – commonly used in EV-ready boards and PME-protected systems with fault detection modules.
Is it BS EN 60898-1 compliant?
Yes – tested and approved to BS EN 60898-1 for 18th Edition compliance.
- Model: WKC263D
- Poles: 2
- Rated Current: 63 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: Sub-mains, EV feeds, plant rooms, industrial equipment
Installation must be carried out by a qualified electrician in accordance with BS 7671. Confirm load type, cable sizing, and breaker curve before energising.
- Mount securely on 35 mm DIN rail (EN 60715)
- Torque terminals to 2.0–2.5 Nm
- Test insulation resistance and verify polarity prior to connection
- Label and record protected circuits within distribution schedule
