6kA MCB – 6A 1 Pole C Curve (WMC106C)

The WMC106C is a 6 A single-pole 6 kA Miniature Circuit Breaker (MCB) providing dependable overcurrent and short-circuit protection for lighting and auxiliary circuits with higher inrush current such as LED drivers, transformers and control gear. Its C-curve tripping characteristic (5–10 × In) offers greater tolerance to start-up surges while maintaining rapid fault disconnection under BS 7671.

Fully certified to BS EN 60898, the WMC106C fits Whitecliffe consumer units and standard DIN-rail enclosures. It delivers 6 kA breaking capacity and a service life of 20 000 mechanical operations for long-term reliability in domestic and light-commercial use.

• 6 A rated current with C-curve (5–10 × In) tripping tolerance
• 6 kA breaking capacity at 230/400 V AC
• Single-pole design (18 mm module width)
• DIN-rail mounted – fits most consumer units and distribution boards
• Complies with BS EN 60898 and BS 7671 (18th Edition A2)
• Service life: 20 000 mechanical / 8 000 electrical operations

The WMC106C provides reliable 6 kA protection for lighting and auxiliary circuits that see moderate inrush. For standard domestic loads, choose a B Curve MCB; for combined earth-fault protection, see our Type A RCBOs.

• Part Code: WMC106C
• Type: Single Pole MCB
• Rated Current (In): 6 A
• Curve: C (5–10 × In tripping characteristic)
• Rated Voltage (Ue): 230/400 V AC
• Rated Frequency: 50/60 Hz
• Breaking Capacity (Icn): 6 kA
• Insulation Voltage (Ui): 500 V
• Impulse Withstand (Uimp): 4 kV
• Dielectric Test Voltage: 2 kV for 1 minute
• Thermal Reference Temp: 30 °C
• Operating Temperature: –5 °C to +40 °C (avg < 35 °C)
• Mechanical Life: 20 000 operations
• Electrical Life: 8 000 operations
• Mounting: 35 mm DIN rail (1 module width)
• Standards: BS EN 60898; BS 7671:2018 (Amendment 2)
• Typical Applications: Lighting circuits with LED drivers, control gear or small motors

Install the WMC106C in a suitable consumer unit or distribution board by a qualified electrician. Match the rating and curve type to the circuit characteristics.

• Mount securely on 35 mm DIN rail with correct busbar alignment
• Select C-curve for lighting circuits with higher inrush (LEDs, transformers)
• Confirm 6 A rating suits cable size and load demand
• Verify Z_s values and protective coordination under BS 7671
• Tighten terminals to manufacturer torque spec and record test results

When should I use a C Curve MCB instead of a B Curve?

C-curve MCBs are used on circuits with higher inrush currents such as LED lighting, transformers or motors. B-curve devices are best for standard domestic loads.

Is the WMC106C compatible with Whitecliffe consumer units?

Yes – it fits all Whitecliffe consumer units and standard DIN-rail enclosures.

Can this MCB protect circuits with LED lighting?

Yes, that’s its primary application – the C-curve profile accommodates the brief inrush from LED drivers and electronic ballasts.

What does 6 kA mean on the label?

It’s the breaker’s maximum fault current capacity – it can interrupt up to 6 000 A without damage. For higher fault levels, see our 10 kA MCBs.

Do you offer D Curve versions?

Yes – Type D (10–20 × In) is available on request for industrial circuits with very high inrush current. Contact our sales team for availability.