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The WKC450B is a 50A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral systems. With a B Curve trip characteristic, it is intended for resistive load applications such as socket outlet groups, small power distribution boards, and general lighting circuits in commercial three-phase systems, EV distribution boards, and solar PV installs.
Providing a 10kA breaking capacity, the WKC450B offers reliable protection against overload and short-circuits while ensuring complete neutral disconnection. It is bi-directional, DIN-rail mounted, and manufactured to BS 7671 (18th Edition) standards.
Installer Tip: The 50A B Curve breaker is suitable for high-demand resistive circuits. Always verify that the fault current at the installation point does not exceed 10kA.
Key Features
- 50A 4 Pole MCB – B Curve characteristic
- 10kA breaking capacity – safe for commercial & industrial systems
- Full neutral isolation: 4P switching (L1, L2, L3, N)
- Bi-directional feed: top or bottom cable entry
- DIN-rail mounted: 18mm per module
- Complies with BS 7671 (18th Edition)
Compare WKC 4 Pole 10kA MCBs (B Curve)
| Model | Rating | Curve | Breaking Capacity |
|---|---|---|---|
| WKC440B | 40A | B Curve | 10kA |
| WKC450B (This Product) | 50A | B Curve | 10kA |
| WKC463B | 63A | B Curve | 10kA |
