25A 2 Pole 10kA MCB – D Curve (WKC225D)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WKC225D is a 25 A 2 Pole 10 kA Miniature Circuit Breaker (MCB) designed to protect high inrush or inductive circuits such as industrial heaters, control panels, and small plant machinery. The D-curve tripping profile allows for short-duration surges up to 20 × rated current, ensuring stable operation without...
The WKC225D is a 25 A 2 Pole 10 kA Miniature Circuit Breaker (MCB) designed to protect high inrush or inductive circuits such as industrial heaters, control panels, and small plant machinery. The D-curve tripping profile allows for short-duration surges up to 20 × rated current, ensuring stable operation without false trips.
It provides simultaneous isolation of both live conductors for safe maintenance and full compliance with BS EN 60898-1. Its 36 mm body fits standard 35 mm DIN rails within industrial enclosures, consumer units, or distribution boards.
Installer Tip: Use a D-curve MCB when protecting plant equipment or machinery circuits with heavy inductive loads. For mixed or lighter loads, use the C-curve version.
Key Features
- 25 A rated – ideal for plant, automation, and heater circuits
- 10 kA breaking capacity – withstands high commercial fault levels
- 2-pole isolation – disconnects both live conductors together
- D-curve tripping – tolerates 10–20× inrush current
- Compact 36 mm width – fits all standard DIN-rail systems
- Bi-directional terminals – line or load feed from either side
- Tested to IEC/EN 60898-1 and compliant with 18th Edition regulations
Compare 2 Pole 10 kA MCB Variants
| Model | Rating | Curve |
|---|---|---|
| WKC225B | 25 A | B Curve |
| WKC225C | 25 A | C Curve |
| WKC225D (This Product) | 25 A | D Curve |
What is a 25 A D-curve MCB used for?
Commonly used in machinery and heating circuits that draw high inrush current during startup.
Does it isolate both live conductors?
Yes – dual-pole design disconnects both lines simultaneously for maximum safety.
Can it be used for heater banks or plant gear?
Yes – ideal for plant control circuits, heating systems, or automation loads requiring D-curve tolerance.
Is it compliant with BS EN 60898-1?
Yes – fully tested to BS EN 60898-1 and 18th Edition compliant.
- Model: WKC225D
- Poles: 2
- Rated Current: 25 A
- Curve Type: D
- 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: Industrial heaters, machinery, automation panels
To be installed by a qualified electrician in accordance with BS 7671. Always confirm that the circuit load requires a D-curve device before installation.
- Mount securely on 35 mm DIN rail (EN 60715)
- Torque terminal screws to 2.0–2.5 Nm
- Test insulation resistance and polarity before energising
- Record protected circuits clearly on the distribution schedule
