WKC 4 pole 10kA MCB's 6-63A
The WKC 4 Pole 10kA Miniature Circuit Breaker (MCB) range provides robust protection for three-phase + neutral circuits in commercial, industrial, EV, and solar installations. With ratings from 6A to 63A and B, C, or D curve options, these breakers are built to handle overloads and short-circuits while giving installers...
The WKC 4 Pole 10kA Miniature Circuit Breaker (MCB) range provides robust protection for three-phase + neutral circuits in commercial, industrial, EV, and solar installations. With ratings from 6A to 63A and B, C, or D curve options, these breakers are built to handle overloads and short-circuits while giving installers full isolation and switching functionality.
Designed for heavy-duty use, these breakers offer a 10kA breaking capacity, are bi-directional, and DIN-rail mounted for straightforward fit-outs. Whether you’re protecting PV strings, EV charger distribution, or machinery boards, the WKC 4P MCB is a trusted choice for safe, regulation-compliant installs.
- Four-pole protection: Covers L1, L2, L3, and Neutral
- Wide current range: 6A–63A ratings available
- Curve options: B, C, or D curve (D available on request)
- 10kA breaking capacity: Withstands high fault currents
- Bi-directional: Feed from top or bottom for install flexibility
- Applications: Solar PV, EV charger distribution, industrial machinery, commercial distribution boards
All current ratings available with B, C, and D curve options:
- 6A: WKC406B / WKC406C / WKC406D
- 10A: WKC410B / WKC410C / WKC410D
- 16A: WKC416B / WKC416C / WKC416D
- 20A: WKC420B / WKC420C / WKC420D
- 25A: WKC425B / WKC425C / WKC425D
- 32A: WKC432B / WKC432C / WKC432D
- 40A: WKC440B / WKC440C / WKC440D
- 50A: WKC450B / WKC450C / WKC450D
- 63A: WKC463B / WKC463C / WKC463D
What’s the difference between 3-pole and 4-pole MCBs?
3-pole MCBs protect three live conductors (L1, L2, L3), while 4-pole MCBs also switch and protect the neutral. They’re often used in PV, EV, or balanced three-phase + N circuits.
What does a 10kA rating mean?
It’s the maximum short-circuit current the MCB can safely interrupt. A 10kA rating is suitable for most commercial and industrial installs.
When should I use a D curve breaker?
D curve breakers are designed for circuits with very high inrush currents (transformers, welders, large motors). They’re available on request for heavy-duty applications.
Are these suitable for solar and EV installs?
Yes — the WKC 4P range is widely used for solar PV distribution and EV charger setups where neutral protection is required.
- Type: Miniature Circuit Breaker (MCB)
- Poles: 4P (three-phase + neutral)
- Breaking Capacity: 10kA
- Current Ratings Available: 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
- Curve Types: B, C, D (D curve available on request)
- Function: Overload protection, short-circuit protection, isolation, switching
- Mounting: DIN rail, 18mm per module
- Dimensions: Approx. 72mm (W) x 90mm (H) x 77mm (D)
- Compliance: BS 7671 (18th Edition)
- Brand: WCED
- SKU Range: WKC406 → WKC463 (B/C/D curves)
The 4-pole WKC range is ideal for protecting circuits where neutral also requires switching and protection. Curve selection should match load type:
- B Curve: Standard resistive loads (lighting, socket circuits)
- C Curve: Inductive loads (motors, HVAC, EV chargers, commercial boards)
- D Curve: Heavy inrush loads (transformers, welders, machinery)
Always confirm that the fault level is compatible with 10kA MCBs and ensure installation is carried out by a qualified electrician under BS 7671 requirements.
