50A 4 Pole 10kA MCB C Curve – WKC450C
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
Secure Payments With
The WKC450C is a 50A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral protection. With its C Curve trip profile, it is best for inductive loads such as motors, pumps, HVAC systems, and EV charging boards in commercial distribution panels, EV setups, and solar PV installs....
The WKC450C is a 50A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral protection. With its C Curve trip profile, it is best for inductive loads such as motors, pumps, HVAC systems, and EV charging boards in commercial distribution panels, EV setups, and solar PV installs.
Rated to 10kA breaking capacity, the WKC450C provides overload and short-circuit protection while isolating all live phases and the neutral. It is DIN-rail mounted, bi-directional, and manufactured in accordance with BS 7671 (18th Edition).
Installer Tip: The 50A C Curve breaker is suited for high-demand inductive circuits. Typical use cases include commercial HVAC compressors, pumps, and large EV distribution panels. Always confirm that fault current levels are ≤10kA.
Key Features
- 50A 4 Pole MCB – C Curve trip profile
- 10kA breaking capacity – strong protection for commercial systems
- Neutral disconnection: 4P isolation (L1, L2, L3, N)
- Bi-directional feed: top or bottom install
- DIN-rail mounted: 18mm width per pole
- Complies with BS 7671 (18th Edition)
Compare WKC 4 Pole 10kA MCBs (C Curve)
| Model | Rating | Curve | Breaking Capacity |
|---|---|---|---|
| WKC440C | 40A | C Curve | 10kA |
| WKC450C (This Product) | 50A | C Curve | 10kA |
| WKC463C | 63A | C Curve | 10kA |
What circuits is the WKC450C best for?
It is ideal for high-demand inductive loads such as HVAC compressors, pumps, and large EV distribution setups.
Why select a C Curve over a B Curve?
C Curve breakers handle higher inrush currents, preventing nuisance trips on inductive load circuits where B Curve models may fail.
Can it be used in solar or EV installs?
Yes — the 50A C Curve is suitable for EV and PV boards with moderate inrush currents, provided system fault level ≤10kA.
Is the WKC450C compliant with UK regulations?
Yes, it complies with BS 7671 (18th Edition) and IEC/EN 60898-1 standards.
- Model: WKC450C
- Type: Miniature Circuit Breaker (MCB)
- Current Rating: 50A
- 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)
- Compliance: BS 7671 (18th Edition), IEC/EN 60898-1
- Brand: WCED
The WKC450C must be installed by a qualified electrician under BS 7671 requirements.
- Mount on 35mm DIN rail (18mm per pole)
- Confirm system fault level ≤10kA
- Designed for inductive/moderate inrush load circuits (C Curve)
- Tighten terminals to recommended torque spec
- Ensure adequate space in enclosure for 4-pole breakers
