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Energizer 3.6W GU10 LED Bulb Non-Dimmable 4000K Cool White 345lm

£149
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Energizer 3.6W GU10 LED bulb delivers 345 lumens of 4000K cool white light through a 36° narrow beam angle, designed as a direct replacement for 50W halogen GU10 spotlights. The LED consumes 3.6W on 230V mains and carries an E energy rating, running cooler than the halogen equivalent while producing the same focused light output. The bulb is non-dimmable.

This GU10 fits standard downlight housings, recessed ceiling fittings, track lighting systems and directional spotlights in kitchens, bathrooms, utility rooms and workspaces where task visibility matters. The 4000K colour temperature sits between warm white and daylight, providing neutral-toned light that renders colours accurately without the yellow cast of 2700K or the clinical brightness of 6500K. The 36° beam concentrates light onto worktops, sinks, counters and task areas rather than spreading it across the whole room.

The bulb measures 50mm diameter by 54mm height, matching the size of traditional halogen GU10s so it sits flush in existing fittings without protruding. Energizer rates the lifespan at 15 years based on average household use of 2.7 hours per day, which translates to approximately 15,000 hours before the LED degrades to 70% of its original output. The 50mm dichroic-style glass front disperses heat through the rear vents rather than projecting it forward into the room.

Specification
Weight (KG) 0.03
Width (mm) 50
Height (mm) 54
Depth (mm) 50
Wattage 3.6W
Lumen 345
Lamp Shape Spot
Lamp Base GU10
Energy Rating E
Kelvin 4,000K
Colour Temperature Cool White
Dimmable No
Beam Angle 36
LED or Halogen LED
Frequently Asked

Can this bulb be used with a dimmer switch?

No. This is a non-dimmable LED bulb. Attempting to use it with a dimmer switch will cause flickering, buzzing or premature failure. If dimming is required, look for GU10 LEDs specifically marked as dimmable.

What halogen wattage does this replace?

This 3.6W LED replaces a 50W halogen GU10, delivering the same 345 lumens through a 36° beam while consuming 93% less energy. The packaging confirms it as a 50W replacement.

Is 4000K suitable for a kitchen or bathroom?

Yes. 4000K cool white provides neutral-toned light that works well in kitchens, bathrooms and utility areas where task visibility and accurate colour rendering matter. It sits between the warmer 2700K-3000K used in living rooms and the daylight 5000K-6500K used in workshops.

How long does the bulb last?

Energizer rates this at a 15-year lifespan based on 2.7 hours of daily use, equating to approximately 15,000 hours. Actual lifespan varies with usage patterns and operating temperature inside the fitting.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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Takes standard bulbs

Takes standard GU10 bulbs, so you choose the brightness and colour to suit the room.

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Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

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    Description

    The Energizer 3.6W GU10 LED bulb delivers 345 lumens of 4000K cool white light through a 36° narrow beam angle, designed as a direct replacement for 50W halogen GU10 spotlights. The LED consumes 3.6W on 230V mains and carries an E energy rating, running cooler than the halogen equivalent while producing the same focused light output. The bulb is non-dimmable.

    This GU10 fits standard downlight housings, recessed ceiling fittings, track lighting systems and directional spotlights in kitchens, bathrooms, utility rooms and workspaces where task visibility matters. The 4000K colour temperature sits between warm white and daylight, providing neutral-toned light that renders colours accurately without the yellow cast of 2700K or the clinical brightness of 6500K. The 36° beam concentrates light onto worktops, sinks, counters and task areas rather than spreading it across the whole room.

    The bulb measures 50mm diameter by 54mm height, matching the size of traditional halogen GU10s so it sits flush in existing fittings without protruding. Energizer rates the lifespan at 15 years based on average household use of 2.7 hours per day, which translates to approximately 15,000 hours before the LED degrades to 70% of its original output. The 50mm dichroic-style glass front disperses heat through the rear vents rather than projecting it forward into the room.

    Specification
    Weight (KG) 0.03
    Width (mm) 50
    Height (mm) 54
    Depth (mm) 50
    Wattage 3.6W
    Lumen 345
    Lamp Shape Spot
    Lamp Base GU10
    Energy Rating E
    Kelvin 4,000K
    Colour Temperature Cool White
    Dimmable No
    Beam Angle 36
    LED or Halogen LED
    Frequently Asked

    Can this bulb be used with a dimmer switch?

    No. This is a non-dimmable LED bulb. Attempting to use it with a dimmer switch will cause flickering, buzzing or premature failure. If dimming is required, look for GU10 LEDs specifically marked as dimmable.

    What halogen wattage does this replace?

    This 3.6W LED replaces a 50W halogen GU10, delivering the same 345 lumens through a 36° beam while consuming 93% less energy. The packaging confirms it as a 50W replacement.

    Is 4000K suitable for a kitchen or bathroom?

    Yes. 4000K cool white provides neutral-toned light that works well in kitchens, bathrooms and utility areas where task visibility and accurate colour rendering matter. It sits between the warmer 2700K-3000K used in living rooms and the daylight 5000K-6500K used in workshops.

    How long does the bulb last?

    Energizer rates this at a 15-year lifespan based on 2.7 hours of daily use, equating to approximately 15,000 hours. Actual lifespan varies with usage patterns and operating temperature inside the fitting.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.