25A 2 Pole 10kA MCB – B Curve (WKC225B)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC225B is a 25A 2 Pole 10kA Miniature Circuit Breaker (MCB) designed for dependable protection of small-power and distribution circuits. With a B-curve tripping profile, it delivers rapid response to short-circuit and overload faults in garage supplies, air-conditioning units, and lighting control panels. Its dual-pole construction isolates both live...
The WKC225B is a 25A 2 Pole 10kA Miniature Circuit Breaker (MCB) designed for dependable protection of small-power and distribution circuits. With a B-curve tripping profile, it delivers rapid response to short-circuit and overload faults in garage supplies, air-conditioning units, and lighting control panels.
Its dual-pole construction isolates both live conductors simultaneously, ensuring full disconnection and compliance with BS EN 60898-1. The compact 36 mm housing fits any standard 35 mm DIN rail system, making it easy to integrate into consumer units or three-phase distribution boards.
Installer Tip: The 25 A B-curve model suits small plant or air-conditioning feeds where start-up currents are modest. Step up to a C-curve if equipment has heavier inrush current.
Key Features
- 25 A rated – ideal for garage feeds, air-con, and small distribution circuits
- 10 kA breaking capacity – handles high fault levels safely
- 2-pole isolation – disconnects both live conductors simultaneously
- B-curve tripping – fast response for resistive or lightly inductive loads
- Compact 36 mm width – fits any 35 mm DIN rail enclosure
- Bi-directional terminals – supply and load can be wired either way
- Conforms to IEC/EN 60898-1 for use under the 18th Edition Wiring Regs
- Compatible with EV boards and consumer units
Compare 2 Pole 10 kA MCB Variants
| Model | Rating | Curve |
|---|---|---|
| WKC225B | 25 A | B Curve (This Product) |
| WKC225C | 25 A | C Curve |
| WKC225D | 25 A | D Curve |
Where is a 25 A B-curve MCB typically used?
Commonly for small plant feeds, garage circuits, and air-conditioning units with low inrush current.
Does it provide full isolation?
Yes – the 2-pole design disconnects both live conductors simultaneously for safe maintenance.
Is this compliant with BS EN 60898-1?
Yes – fully tested and certified for use under BS EN 60898-1 and the 18th Edition Wiring Regulations.
Can this be used in outdoor enclosures?
Yes – when fitted within an IP-rated enclosure providing adequate weather protection.
- Model: WKC225B
- Poles: 2
- Rated Current: 25 A
- Curve Type: B
- Breaking Capacity: 10 kA
- Operating Voltage: 230/400 V AC
- Mounting: 35 mm DIN rail (EN 60715)
- Width: 36 mm (2 modules)
- Standard: IEC/EN 60898-1
- Applications: Garage feeds, air-con units, small plant controls, EV boards
Must be installed by a qualified electrician in line with BS 7671. Check that circuit rating and curve type suit the connected load before energising.
- Mount securely on 35 mm DIN rail (EN 60715)
- Tighten terminals to 2.0–2.5 Nm torque
- Confirm polarity and insulation resistance prior to connection
- Clearly label outgoing circuit in the board directory
