20A 4 Pole 10kA MCB C Curve – WKC420C
£17.85
ex VAT
£21.42 inc VAT
SKU: WKC420C
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The WKC420C is a 20A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral systems. With its C Curve trip characteristic, it is suited to inductive load circuits such as motors, HVAC, pumps, and EV charging sub-circuits in commercial boards, EV distribution setups, and solar PV systems....
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Description
The WKC420C is a 20A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral systems. With its C Curve trip characteristic, it is suited to inductive load circuits such as motors, HVAC, pumps, and EV charging sub-circuits in commercial boards, EV distribution setups, and solar PV systems.
Offering a 10kA breaking capacity, the WKC420C ensures safe overload and short-circuit protection while isolating all live conductors and neutral. It is bi-directional, DIN-rail mounted, and compliant with BS 7671 (18th Edition).
Installer Tip: The 20A C Curve breaker is a versatile option for medium-duty inductive loads where inrush currents occur, such as fan motors, HVAC, and EV circuits. Confirm system fault level ≤10kA.
Key Features
- 20A 4 Pole MCB – C Curve profile
- 10kA breaking capacity – safe for commercial & industrial installs
- Neutral disconnection: 4P switching (L1, L2, L3, N)
- Bi-directional feed: install top or bottom
- DIN-rail mounting: 18mm per module
- Complies with BS 7671 (18th Edition)
Compare WKC 4 Pole 10kA MCBs (C Curve)
| Model | Rating | Curve | Breaking Capacity |
|---|---|---|---|
| WKC416C | 16A | C Curve | 10kA |
| WKC420C (This Product) | 20A | C Curve | 10kA |
| WKC425C | 25A | C Curve | 10kA |
| WKC432C | 32A | C Curve | 10kA |
Technical specs
- Model: WKC420C
- Type: Miniature Circuit Breaker (MCB)
- Current Rating: 20A
- 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
Installation notes
The WKC420C must be installed by a qualified electrician under BS 7671 regulations.
- DIN rail mounted, 18mm per pole
- Check prospective fault current ≤10kA
- Use on inductive or moderate inrush load circuits (C Curve)
- Tighten terminals to manufacturer torque spec
- Allow space for 4P switching devices in enclosure
FAQs
What applications is the WKC420C best for?
It is ideal for inductive load circuits including HVAC, pumps, motors, and EV charger sub-circuits.
How does a C Curve compare to B Curve?
C Curve breakers tolerate higher inrush currents, making them suitable for inductive circuits. B Curve is only for resistive loads.
Is this suitable for EV or PV systems?
Yes — particularly in EV distribution or PV installs with moderate inrush currents, provided the board fault level ≤10kA.
Does it meet regulations?
Yes, the WKC420C complies with BS 7671 (18th Edition) and IEC/EN 60898-1 standards.
