6A 4 Pole 10kA MCB C Curve – WKC406C
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC406C is a 6A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral protection. With its C Curve trip characteristic, it is suited to inductive load circuits such as motors, HVAC, and commercial distribution boards in three-phase systems, EV charging units, and solar PV setups. Built...
The WKC406C is a 6A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral protection. With its C Curve trip characteristic, it is suited to inductive load circuits such as motors, HVAC, and commercial distribution boards in three-phase systems, EV charging units, and solar PV setups.
Built with a 10kA breaking capacity, the WKC406C provides overload and short-circuit protection while disconnecting all live phases and the neutral. It is DIN-rail mounted, bi-directional, and fully compliant with BS 7671 (18th Edition).
Installer Tip: Use a C Curve breaker where moderate inrush currents are expected — such as with fluorescent lighting, small motors, or EV charger sub-circuits. Always confirm that the prospective fault current does not exceed 10kA.
Key Features
- 6A 4 Pole MCB – C Curve characteristic
- 10kA breaking capacity – suitable for commercial & industrial boards
- Full neutral switching: 4P protection (L1, L2, L3, N)
- Bi-directional feed: top or bottom entry
- DIN-rail mountable: 18mm per module
- Complies with BS 7671 (18th Edition)
Compare WKC 4 Pole 10kA MCBs (C Curve)
| Model | Rating | Curve | Breaking Capacity |
|---|---|---|---|
| WKC406C (This Product) | 6A | C Curve | 10kA |
| WKC410C | 10A | C Curve | 10kA |
| WKC416C | 16A | C Curve | 10kA |
| WKC420C | 20A | C Curve | 10kA |
When should I choose a C Curve MCB?
C Curve devices are used where moderate inrush currents are present, such as small motors, HVAC units, and EV charger sub-circuits.
What’s the difference between a B Curve and C Curve?
B Curve is for resistive loads like lighting and sockets, while C Curve handles inductive loads with higher inrush currents.
Is the WKC406C suitable for EV charging circuits?
Yes — particularly for sub-circuits where chargers or associated equipment may draw moderate inrush current.
Does it comply with UK regs?
Yes, it is manufactured to BS 7671 (18th Edition) and IEC/EN 60898-1 standards.
- Model: WKC406C
- Type: Miniature Circuit Breaker (MCB)
- Current Rating: 6A
- Curve: C 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 WKC406C must be installed by a qualified electrician in accordance with BS 7671 wiring regulations.
- Mount on 35mm DIN rail (18mm per pole)
- Check fault current rating ≤10kA
- Use only on inductive/moderate inrush circuits (C Curve)
- Tighten terminals to manufacturer torque spec
- Allow adequate enclosure space for 4P switching devices
