WKC 3 Pole 10kA MCB – 6A C Curve (WKC306C)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC306C 3 Pole 10kA MCB is a 6A C Curve breaker designed for protecting three-phase circuits against overload and short-circuit faults. Rated at 10kA breaking capacity and compliant with BS 7671 (18th Edition), it’s ideal for small inductive loads such as EV chargers, motors, and solar PV circuits. Compact,...
The WKC306C 3 Pole 10kA MCB is a 6A C Curve breaker designed for protecting three-phase circuits against overload and short-circuit faults. Rated at 10kA breaking capacity and compliant with BS 7671 (18th Edition), it’s ideal for small inductive loads such as EV chargers, motors, and solar PV circuits. Compact, DIN rail mounted, and bi-directional, it provides reliable circuit protection in commercial and industrial installations.
Installer Tip: Choose the C Curve for inductive circuits where inrush currents are expected. For purely resistive loads, see the B Curve, or for very high inrush, the D Curve.
Key Features
- 6A rated current – suited for small three-phase inductive loads
- C Curve tripping – trips at 5–10x In for circuits with inrush
- 10kA breaking capacity – handles high fault levels safely
- 3 Pole design: complete three-phase protection
- Bi-directional: can be wired top or bottom
- Applications: motors, HVAC controls, EV/PV circuits
Compare 6A 3 Pole Variants
| Model | Curve | Rated Current | Breaking Capacity |
|---|---|---|---|
| WKC306B | B Curve | 6A | 10kA |
| WKC306C (This Product) | C Curve | 6A | 10kA |
| WKC306D | D Curve | 6A | 10kA |
Where is the WKC306C used?
It’s ideal for three-phase systems with small inductive loads such as motors, HVAC control circuits, or EV charging circuits.
How does C Curve compare to B and D?
C Curve trips at 5–10x In, designed for circuits with inrush. B Curve trips faster at 3–5x In, while D Curve trips slower at 10–20x In.
Why use a 10kA breaker?
10kA MCBs can safely interrupt higher fault currents common in commercial and industrial boards.
Is the WKC306C bi-directional?
Yes — wiring can be connected from either the top or bottom terminals.
Can it be used in EV and PV installs?
Yes — this breaker is suitable for EV circuits and solar PV distribution.
- Product Code: WKC306C
- Type: Miniature Circuit Breaker (MCB)
- Poles: 3P (three-phase)
- Rated Current: 6A
- Curve: C Curve
- Breaking Capacity: 10kA
- Mounting: DIN rail, 18mm per module
- Functions: Overload & short-circuit protection, switching, isolation
- Compliance: BS 7671 (18th Edition)
- Endurance: 4000 mechanical / 2000 electrical operations
- Brand: WCED
Install on DIN rails within consumer units or distribution boards. Curve type guidance:
- B Curve: resistive loads (lighting, sockets)
- C Curve: inductive loads (motors, HVAC, EV chargers)
- D Curve: heavy inrush equipment (transformers, welders)
Ensure site fault levels are compatible with the 10kA rating. Installation must comply with BS 7671 and be performed by a qualified electrician.
