25A 4 Pole 10kA MCB C Curve – WKC425C
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC425C is a 25A 4 pole 10kA Miniature Circuit Breaker (MCB) designed to protect three-phase + neutral systems. With its C Curve trip profile, it is suitable for inductive loads such as motors, pumps, HVAC units, and EV charger circuits in commercial distribution boards, EV installations, and solar PV...
The WKC425C is a 25A 4 pole 10kA Miniature Circuit Breaker (MCB) designed to protect three-phase + neutral systems. With its C Curve trip profile, it is suitable for inductive loads such as motors, pumps, HVAC units, and EV charger circuits in commercial distribution boards, EV installations, and solar PV systems.
Rated to 10kA breaking capacity, the WKC425C provides reliable overload and short-circuit protection while isolating all three phases and neutral. It is DIN-rail mountable, bi-directional, and fully compliant with BS 7671 (18th Edition).
Installer Tip: The 25A C Curve breaker is a good fit for medium-sized inductive loads. Use for motor circuits, HVAC systems, or EV distribution boards with inrush current. Confirm fault levels ≤10kA.
Key Features
- 25A 4 Pole MCB – C Curve trip characteristic
- 10kA breaking capacity – robust protection for commercial installs
- Four-pole disconnection: L1, L2, L3 + Neutral
- 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 (C Curve)
| Model | Rating | Curve | Breaking Capacity |
|---|---|---|---|
| WKC420C | 20A | C Curve | 10kA |
| WKC425C (This Product) | 25A | C Curve | 10kA |
| WKC432C | 32A | C Curve | 10kA |
| WKC440C | 40A | C Curve | 10kA |
What applications is the WKC425C suited to?
It is commonly used for motors, HVAC, pumps, and EV circuits where inrush currents are present.
How does the C Curve benefit installers?
C Curve breakers allow for higher inrush currents compared to B Curve, reducing nuisance tripping in inductive load circuits.
Is this breaker suitable for solar PV installs?
Yes — particularly for circuits where equipment introduces moderate inrush current, as long as the system fault current ≤10kA.
Does the WKC425C meet compliance standards?
Yes, it complies with BS 7671 (18th Edition) and IEC/EN 60898-1.
- Model: WKC425C
- Type: Miniature Circuit Breaker (MCB)
- Current Rating: 25A
- Curve: C Curve
- Poles: 4P (L1, L2, L3 + Neutral)
- Breaking Capacity: 10kA
- Mounting: 35mm DIN rail, 18mm width per pole
- Dimensions: Approx. 72mm (W) x 90mm (H) x 77mm (D)
- Standards: BS 7671 (18th Edition), IEC/EN 60898-1
- Brand: WCED
The WKC425C must be installed by a qualified electrician under BS 7671 requirements.
- Mount on 35mm DIN rail (18mm per pole)
- Check board fault current ≤10kA
- Designed for inductive/moderate inrush loads (C Curve)
- Tighten terminals to recommended torque
- Ensure adequate space for 4P breakers in the enclosure
