6kA MCB – 16A 1 Pole B Curve (WMC116B)
£1.84
£2.99
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WMC116B is a 16 A single-pole 6 kA Miniature Circuit Breaker (MCB) designed for socket and small-power radial circuits. It combines dependable overcurrent and short-circuit protection with a B-curve tripping characteristic that responds at 3–5 × rated current — ideal for domestic and light-commercial loads with low inrush. Manufactured...
The WMC116B is a 16 A single-pole 6 kA Miniature Circuit Breaker (MCB) designed for socket and small-power radial circuits. It combines dependable overcurrent and short-circuit protection with a B-curve tripping characteristic that responds at 3–5 × rated current — ideal for domestic and light-commercial loads with low inrush.
Manufactured to BS EN 60898, the WMC116B fits Whitecliffe consumer units and standard DIN-rail enclosures. It offers long mechanical life and precise thermal-magnetic tripping for reliable circuit protection across 8 000 electrical operations.
Installer Tip: Use 16 A B-curve breakers for socket circuits and small appliances fed by radials or rings. Confirm Zs values and protective coordination to ensure compliance with BS 7671 disconnection times.
- 16 A rated current with B-curve (3–5 × In) tripping
- 6 kA breaking capacity at 230/400 V AC
- Single-pole design – 18 mm module width
- DIN-rail mounted for consumer units and distribution boards
- Complies with BS EN 60898 and BS 7671 (18th Edition A2)
- Tested service life: 20 000 mechanical / 8 000 electrical operations
- Contact-position indicator for easy visual status check
| Part Code | Rating | Curve | Typical Use |
|---|---|---|---|
| WMC106B | 6 A | B | Lighting and low-load socket circuits |
| WMC116B | 16 A | B | Socket or small-power radial circuits |
| WMC132B | 32 A | B | Cookers and high-load domestic circuits |
| WMC116C | 16 A | C | Radials with higher inrush (e.g. motors, compressors) |
The WMC116B provides dependable 6 kA fault protection for socket and small-power circuits. For motor or EV installations requiring greater inrush tolerance, view our C Curve MCB range or upgrade to Type A RCBOs for combined overcurrent and earth-fault protection.
What does 16 A mean on this MCB?
It indicates the breaker’s rated current. The WMC116B will carry 16 A continuously and trip if the circuit exceeds this value beyond its thermal tolerance.
When should I use a 16 A B Curve breaker?
B-curve MCBs trip quickly at low fault multiples (3–5 × In) and are ideal for general socket and lighting circuits without large inrush currents.
Are these compatible with Whitecliffe consumer units?
Yes — the WMC116B fits all Whitecliffe boards and most standard 18 mm DIN-rail enclosures.
Can this be used for outbuilding or garage circuits?
Yes, if installed in a suitable enclosure with appropriate IP rating. Use our IP65 plastic enclosure for external setups.
What if the circuit has motors or compressors?
Choose a C Curve MCB which allows for higher inrush currents (5–10 × In) without nuisance tripping.
- Part Code: WMC116B
- Type: Single Pole MCB
- Rated Current (In): 16 A
- Curve: B (3–5 × 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 Voltage (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: Socket outlets, ring final and small power radials in domestic or light-commercial systems
Install the WMC116B in a suitable consumer unit or distribution board by a qualified electrician. Always match the rating and curve type to the circuit design.
- Mount securely on 35 mm DIN rail with correct busbar alignment
- Select B-curve for socket or radial circuits with low inrush
- Verify rated current (16 A) and cable size meet design requirements
- Use C-curve devices for motors or compressor loads
- Tighten terminals to manufacturer torque values and log test results on EIC forms
