Free Delivery on all orders over £99*

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

£199
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 dimmable LED spotlight bulb producing 345 lumens of cool white 4000K light through a 36° beam angle. The GU10 base fits standard UK mains-voltage spotlight fittings — downlights, track lights, ceiling spots — without requiring a transformer. At 3.6W this bulb replaces a 50W halogen while consuming approximately 93% less electricity.

Designed for task lighting in kitchens, offices, bathrooms and workspaces where a neutral white tone supports concentration and clarity, the 4000K output sits between warm white (2700-3000K) and daylight (5000K+). The dimmable function works with most leading-edge and trailing-edge dimmers, allowing the light level to be adjusted from full brightness down to a low glow depending on the time of day or activity. Dimmer compatibility should be checked with the specific dimmer model before installation.

The 50mm diameter and 54mm length give the bulb a compact profile that sits flush or recessed in most GU10 fittings without protruding below the ceiling line. The narrow 36° beam concentrates light into a defined pool rather than spreading it wide, making the bulb suitable for accent lighting on artwork, highlighting worktops, or creating layered lighting schemes where multiple spots are aimed at different zones. The rated 15-year lifespan assumes average domestic use of 2.7 hours per day.

Specification
Weight (KG) 0.04
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 Yes
Beam Angle 36
LED or Halogen LED
Frequently Asked

Is this bulb compatible with all dimmers?

The bulb is dimmable and works with most leading-edge and trailing-edge dimmers designed for LED loads. Compatibility depends on the specific dimmer model and the total wattage of bulbs on the circuit. If you experience flickering or the bulb does not dim smoothly, the dimmer may need upgrading to an LED-compatible model.

What does the 36° beam angle mean in practice?

A 36° beam angle is classified as a narrow spot. The light is concentrated into a defined pool approximately 600mm wide when the bulb is fitted 1m above a surface. This makes the bulb suitable for accent lighting, task lighting on worktops, or creating focused pools of light rather than general room illumination.

How does 4000K compare to warm white or daylight?

4000K is a neutral cool white that sits between warm white (2700-3000K, which has a yellow/amber tone) and daylight (5000K+, which has a blue tone). It provides clear, crisp light that supports concentration and is commonly used in kitchens, bathrooms and workspaces. If you prefer a cosier tone for living rooms or bedrooms, a 2700-3000K bulb may be more appropriate.

Does it require a transformer?

No. GU10 bulbs run directly on 230V mains voltage and fit into mains-voltage spotlight fittings without a transformer. This is different from GU5.3 or MR16 bulbs, which typically require a 12V transformer.

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 dimmable LED spotlight bulb producing 345 lumens of cool white 4000K light through a 36° beam angle. The GU10 base fits standard UK mains-voltage spotlight fittings — downlights, track lights, ceiling spots — without requiring a transformer. At 3.6W this bulb replaces a 50W halogen while consuming approximately 93% less electricity.

    Designed for task lighting in kitchens, offices, bathrooms and workspaces where a neutral white tone supports concentration and clarity, the 4000K output sits between warm white (2700-3000K) and daylight (5000K+). The dimmable function works with most leading-edge and trailing-edge dimmers, allowing the light level to be adjusted from full brightness down to a low glow depending on the time of day or activity. Dimmer compatibility should be checked with the specific dimmer model before installation.

    The 50mm diameter and 54mm length give the bulb a compact profile that sits flush or recessed in most GU10 fittings without protruding below the ceiling line. The narrow 36° beam concentrates light into a defined pool rather than spreading it wide, making the bulb suitable for accent lighting on artwork, highlighting worktops, or creating layered lighting schemes where multiple spots are aimed at different zones. The rated 15-year lifespan assumes average domestic use of 2.7 hours per day.

    Specification
    Weight (KG) 0.04
    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 Yes
    Beam Angle 36
    LED or Halogen LED
    Frequently Asked

    Is this bulb compatible with all dimmers?

    The bulb is dimmable and works with most leading-edge and trailing-edge dimmers designed for LED loads. Compatibility depends on the specific dimmer model and the total wattage of bulbs on the circuit. If you experience flickering or the bulb does not dim smoothly, the dimmer may need upgrading to an LED-compatible model.

    What does the 36° beam angle mean in practice?

    A 36° beam angle is classified as a narrow spot. The light is concentrated into a defined pool approximately 600mm wide when the bulb is fitted 1m above a surface. This makes the bulb suitable for accent lighting, task lighting on worktops, or creating focused pools of light rather than general room illumination.

    How does 4000K compare to warm white or daylight?

    4000K is a neutral cool white that sits between warm white (2700-3000K, which has a yellow/amber tone) and daylight (5000K+, which has a blue tone). It provides clear, crisp light that supports concentration and is commonly used in kitchens, bathrooms and workspaces. If you prefer a cosier tone for living rooms or bedrooms, a 2700-3000K bulb may be more appropriate.

    Does it require a transformer?

    No. GU10 bulbs run directly on 230V mains voltage and fit into mains-voltage spotlight fittings without a transformer. This is different from GU5.3 or MR16 bulbs, which typically require a 12V transformer.

    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.