4Pole 10KA MCB's
The 4 Pole 10kA MCB range is designed for reliable circuit protection across three-phase and four-wire systems. With a 10,000A breaking capacity, these breakers are suitable for both commercial and industrial installs where overload and short-circuit protection are essential. Each device is DIN-rail mountable and built to meet UK standards...
The 4 Pole 10kA MCB range is designed for reliable circuit protection across three-phase and four-wire systems. With a 10,000A breaking capacity, these breakers are suitable for both commercial and industrial installs where overload and short-circuit protection are essential. Each device is DIN-rail mountable and built to meet UK standards for safe, repeatable performance.
Available in a wide choice of ratings and curves, you can select the exact specification required for your project:
- 16A B Curve (WKB416B) – light commercial or small load circuits
- 16A C Curve (WKB416C) – higher inrush current on small loads
- 32A B Curve (WKB432B) – general distribution circuits
- 32A C Curve (WKB432C) – circuits with motor or inductive loads
- 40A C Curve (WKB440C) – heavier-duty three-phase applications
- 50A C Curve (WKB450C) – mid-size industrial circuits
- 63A B Curve (WKB463B) – high-load systems, general protection
- 63A C Curve (WKB463C) – motor-heavy or high inrush loads
- 100A C Curve (WKB4100C) – large three-phase installs requiring maximum protection
All variants are part of the WCED WKB series, giving you a consistent fit across boards and guaranteed compliance with BS EN 60898. Built for repeat use, these breakers are trusted in lighting, power distribution, and machinery supply circuits.
What’s the difference between B and C curve MCBs?
B curve devices are generally used for domestic or light commercial circuits, while C curve devices are designed for circuits with higher inrush currents, such as motors or machinery.
Are these suitable for three-phase systems?
Yes. These are 4 pole MCBs designed for three-phase + neutral circuits.
What is the breaking capacity of these MCBs?
All variants are rated at 10kA, providing protection against high prospective fault currents.
Which standards do these comply with?
All 4 pole WKB series MCBs are fully compliant with BS EN 60898.
- Poles: 4P (four pole)
- Breaking Capacity: 10 kA
- Current Ratings: 16A, 32A, 40A, 50A, 63A, 100A
- Curves: B and C
- Operating Voltage: 230/400V AC
- Frequency: 50/60Hz
- Mounting: 18mm DIN rail
- Protection Degree: IP20
- Compliance: BS EN 60898
These breakers are suitable for installation in compatible consumer units and distribution boards. They must be fitted by a qualified electrician to ensure compliance with BS 7671.
- Ensure the selected rating and curve matches your circuit requirements
- Use C curve options for motor or inductive loads with higher inrush currents
- Install only where the prospective short-circuit current does not exceed 10kA
- DIN-rail mounted for fast replacement and standardised fit
