63A 2 Pole 10kA MCB – C Curve (WKC263C)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC263C is a 63 A 2 Pole 10 kA Miniature Circuit Breaker (MCB) engineered for high-load single-phase circuits where inrush currents are moderate. The C-curve tripping profile makes it perfect for sub-mains, EV feeds, and heavy distribution spurs requiring stable, high-capacity protection without nuisance tripping. Its dual-pole isolation disconnects...
The WKC263C is a 63 A 2 Pole 10 kA Miniature Circuit Breaker (MCB) engineered for high-load single-phase circuits where inrush currents are moderate. The C-curve tripping profile makes it perfect for sub-mains, EV feeds, and heavy distribution spurs requiring stable, high-capacity protection without nuisance tripping.
Its dual-pole isolation disconnects both live conductors simultaneously, meeting BS EN 60898-1 standards and 18th Edition wiring requirements. Compact 36 mm body mounts easily on any 35 mm DIN rail within consumer units, metal enclosures, or commercial boards.
Installer Tip: A 63 A C-curve breaker is ideal for sub-mains and EV control circuits that experience higher switch-on current. For heavier inductive equipment such as large motors, use the D-curve version instead.
Key Features
- 63 A rated – designed for sub-mains, EV feeds, and heavy circuits
- 10 kA breaking capacity – built for high fault-level installations
- 2-pole isolation – disconnects both live conductors together
- C-curve tripping – tolerates moderate inrush without nuisance tripping
- Bi-directional terminals – allows top or bottom feed flexibility
- 36 mm (2 modules) – fits all standard DIN-rail boards
- Tested to IEC/EN 60898-1 and compliant with the 18th Edition Wiring Regulations
Compare 2 Pole 10 kA MCB Variants
| Model | Rating | Curve |
|---|---|---|
| WKC263B | 63 A | B Curve |
| WKC263C (This Product) | 63 A | C Curve |
| WKC263D | 63 A | D Curve |
What is a 63 A C-curve MCB used for?
Used for high-load single-phase or sub-main circuits that experience moderate inrush current, such as EV feeds or distribution spurs.
Does it isolate both conductors?
Yes – dual-pole isolation disconnects both live lines simultaneously for safe maintenance.
Can it be used in EV installations?
Yes – suitable for use within EV-ready boards or PME-protected systems with appropriate fault detection.
Is it BS EN 60898-1 compliant?
Yes – tested and certified to BS EN 60898-1 and fully compliant with the 18th Edition Wiring Regulations.
- Model: WKC263C
- Poles: 2
- Rated Current: 63 A
- Curve Type: C
- 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, distribution spurs, commercial heating
To be installed by a qualified electrician under BS 7671. Verify cable sizing, load demand, and curve suitability before energising.
- Mount securely on 35 mm DIN rail (EN 60715)
- Torque terminals to 2.0–2.5 Nm
- Check insulation resistance and polarity prior to commissioning
- Label and record circuit data within the distribution schedule
