Free Delivery on all orders over £99*

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

£149
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
We are an Independent UK Company
Price match. Found it cheaper? Contact us
Trade Discount Available
Description

The Energizer 3.6W GU10 is a non-dimmable LED spotlight bulb delivering 345 lumens through a 36° beam angle at 4000K cool white. The GU10 twist-and-lock base fits standard UK mains-voltage spotlight fittings without requiring a transformer, making it a direct replacement for 35W halogen GU10s in downlights, track lighting and recessed ceiling fixtures.

Designed for task lighting in kitchens, bathrooms, home offices and commercial workspaces, the 4000K colour temperature sits between warm white (2700K-3000K) and daylight (5000K-6500K), producing a neutral white that renders colours accurately without the yellow cast of warmer bulbs or the clinical blue tone of daylight. The narrow 36° beam concentrates light into a defined pool rather than spreading it wide, making the bulb well-suited to spotlighting work surfaces, sinks, countertops and desk areas.

The bulb measures 50mm diameter by 54mm height, matching the form factor of traditional halogen GU10s so it sits flush in most downlight housings. At 3.6W it draws approximately 90% less power than the 35W halogen equivalent it replaces, with Energizer rating the LED lifespan at 15 years under typical domestic use patterns (approximately 15,000 hours). The bulb is non-dimmable and should not be paired with dimmer switches.

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

Is this bulb dimmable?

No. The Energizer 3.6W GU10 is non-dimmable and must not be used with dimmer switches. Installing it on a dimmed circuit may cause flickering, buzzing or premature failure.

What's the difference between 4000K and 3000K?

4000K cool white produces a neutral white light without the warm yellow tone of 3000K. It renders colours more accurately and is typically preferred in kitchens, bathrooms and task-focused spaces where clarity matters. 3000K warm white suits living rooms and bedrooms where a softer, more relaxing light is wanted.

Does it need a transformer?

No. GU10 bulbs run directly on 230V mains voltage. They twist and lock into the fitting without requiring a transformer, unlike GU5.3 and MR16 low-voltage equivalents.

How does the 36° beam angle affect light spread?

A 36° beam angle produces a concentrated pool of light directly below the bulb, ideal for spotlighting specific areas like worktops or sinks. Wider beam angles (60°+) spread light more evenly across a room but reduce intensity at the centre of the pool.

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.

See it lit, in person

Lighting looks different in a real room. Come and see our range at our showrooms in Birmingham, Hong Kong and Dubai, or talk to our design team wherever you are.

Niori lighting showroom trailer video with closeups of alabaster lighting

Why Niori

Over 20 years lighting homes worldwide

We are a specialist lighting and mirror retailer with showrooms in Birmingham, Hong Kong and Dubai, shipping to customers around the world. Our own design team is here to help, from first idea to final fitting.

Genuine products

An authorised stockist

Every product arrives brand new with the full manufacturer warranty. Found it cheaper elsewhere? Ask us about a price match.

Light source

Takes standard bulbs

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

Ordering with us

Free delivery over £99

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.

You Might Also Like

Recommended For You

    Our Reviews

    From first click to final installation, our customers share how Niori lights up their spaces. Read their words and envision what’s possible for yours.

    Featured Projects

    Step into our portfolio and see how we transform homes, restaurants, and commercial spaces and more, worldwide. Click here for a closer look at our latest projects.

    Description

    The Energizer 3.6W GU10 is a non-dimmable LED spotlight bulb delivering 345 lumens through a 36° beam angle at 4000K cool white. The GU10 twist-and-lock base fits standard UK mains-voltage spotlight fittings without requiring a transformer, making it a direct replacement for 35W halogen GU10s in downlights, track lighting and recessed ceiling fixtures.

    Designed for task lighting in kitchens, bathrooms, home offices and commercial workspaces, the 4000K colour temperature sits between warm white (2700K-3000K) and daylight (5000K-6500K), producing a neutral white that renders colours accurately without the yellow cast of warmer bulbs or the clinical blue tone of daylight. The narrow 36° beam concentrates light into a defined pool rather than spreading it wide, making the bulb well-suited to spotlighting work surfaces, sinks, countertops and desk areas.

    The bulb measures 50mm diameter by 54mm height, matching the form factor of traditional halogen GU10s so it sits flush in most downlight housings. At 3.6W it draws approximately 90% less power than the 35W halogen equivalent it replaces, with Energizer rating the LED lifespan at 15 years under typical domestic use patterns (approximately 15,000 hours). The bulb is non-dimmable and should not be paired with dimmer switches.

    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

    Is this bulb dimmable?

    No. The Energizer 3.6W GU10 is non-dimmable and must not be used with dimmer switches. Installing it on a dimmed circuit may cause flickering, buzzing or premature failure.

    What's the difference between 4000K and 3000K?

    4000K cool white produces a neutral white light without the warm yellow tone of 3000K. It renders colours more accurately and is typically preferred in kitchens, bathrooms and task-focused spaces where clarity matters. 3000K warm white suits living rooms and bedrooms where a softer, more relaxing light is wanted.

    Does it need a transformer?

    No. GU10 bulbs run directly on 230V mains voltage. They twist and lock into the fitting without requiring a transformer, unlike GU5.3 and MR16 low-voltage equivalents.

    How does the 36° beam angle affect light spread?

    A 36° beam angle produces a concentrated pool of light directly below the bulb, ideal for spotlighting specific areas like worktops or sinks. Wider beam angles (60°+) spread light more evenly across a room but reduce intensity at the centre of the pool.

    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.