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Energizer 3.4W MR16 LED Bulb GU5.3 3000K Warm White Non-Dimmable

£199
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Energizer 3.4W MR16 LED bulb is a 50mm reflector lamp with a GU5.3 two-pin base, delivering 345 lumens of 3000K warm white light in a 36° narrow cone beam. Rated as a direct replacement for 35W halogen MR16 bulbs, the LED consumes 90% less energy while producing comparable light output on the same transformer or driver.

Designed for track lighting, recessed downlights and display lighting in both residential and commercial settings, the narrow 36° beam concentrates light onto worktops, artwork, shelving and reading positions without spilling excess light into surrounding areas. The 3000K colour temperature produces a warm incandescent-like tone that works across traditional and contemporary interiors, particularly in living rooms, bedrooms, kitchens and hospitality environments where a relaxed atmosphere is needed.

The bulb carries a 15-year lifespan rating based on 3 hours daily use, equating to approximately 16,425 hours before lumen depreciation becomes noticeable. The MR16 reflector body measures 50mm in diameter and 45mm deep, fitting standard recessed and surface-mounted MR16 luminaires without modification. The bulb operates on 12V AC or DC supply via a compatible LED driver or transformer, and the GU5.3 base uses the same 5.3mm pin spacing as halogen predecessors.

The non-dimmable circuit design prioritises reliability and efficiency over dimmer compatibility, making the bulb suitable for fixed installations where light level adjustment is not required. The narrow beam angle and moderate 345-lumen output suit task-oriented applications rather than general room illumination, where multiple bulbs in a track or grid arrangement provide coverage.

Specification
Weight (KG) 0.03
Width (mm) 45
Height (mm) 50
Depth (mm) 45
Wattage 3.4W
Lumen 345
Lamp Shape Spot
Lamp Base MR16 / GU5.3
Energy Rating E
Kelvin 3,000K
Colour Temperature Warm White
Dimmable No
Beam Angle 36
LED or Halogen LED
Frequently Asked

Is this bulb dimmable?

No. The bulb uses a non-dimmable LED driver circuit. Attempting to use it with a dimmer switch may cause flickering, buzzing or premature failure. For dimmable MR16 options, please contact us or use the site filters to find compatible alternatives.

What voltage does it require?

The bulb operates on 12V AC or DC supply. It requires a compatible LED driver or transformer rated for LED loads. Older halogen transformers may work but can cause compatibility issues — using an LED-rated driver is recommended for reliable performance.

Can it replace a 35W halogen bulb directly?

Yes. The 345-lumen output and 36° beam angle closely match a standard 35W halogen MR16, making it a direct retrofit in most applications. The GU5.3 base is the same pin spacing, so the bulb fits existing lamp holders without modification.

What does the 36° beam angle mean in practice?

A 36° beam is classified as a narrow cone. It concentrates light onto a defined area approximately 1.2m wide when the bulb is positioned 2m from the surface, making it suitable for task lighting, accent lighting and directional applications rather than general room wash.

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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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 MR16 bulbs, so you choose the brightness and colour to suit the room.

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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.

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    Description

    The Energizer 3.4W MR16 LED bulb is a 50mm reflector lamp with a GU5.3 two-pin base, delivering 345 lumens of 3000K warm white light in a 36° narrow cone beam. Rated as a direct replacement for 35W halogen MR16 bulbs, the LED consumes 90% less energy while producing comparable light output on the same transformer or driver.

    Designed for track lighting, recessed downlights and display lighting in both residential and commercial settings, the narrow 36° beam concentrates light onto worktops, artwork, shelving and reading positions without spilling excess light into surrounding areas. The 3000K colour temperature produces a warm incandescent-like tone that works across traditional and contemporary interiors, particularly in living rooms, bedrooms, kitchens and hospitality environments where a relaxed atmosphere is needed.

    The bulb carries a 15-year lifespan rating based on 3 hours daily use, equating to approximately 16,425 hours before lumen depreciation becomes noticeable. The MR16 reflector body measures 50mm in diameter and 45mm deep, fitting standard recessed and surface-mounted MR16 luminaires without modification. The bulb operates on 12V AC or DC supply via a compatible LED driver or transformer, and the GU5.3 base uses the same 5.3mm pin spacing as halogen predecessors.

    The non-dimmable circuit design prioritises reliability and efficiency over dimmer compatibility, making the bulb suitable for fixed installations where light level adjustment is not required. The narrow beam angle and moderate 345-lumen output suit task-oriented applications rather than general room illumination, where multiple bulbs in a track or grid arrangement provide coverage.

    Specification
    Weight (KG) 0.03
    Width (mm) 45
    Height (mm) 50
    Depth (mm) 45
    Wattage 3.4W
    Lumen 345
    Lamp Shape Spot
    Lamp Base MR16 / GU5.3
    Energy Rating E
    Kelvin 3,000K
    Colour Temperature Warm White
    Dimmable No
    Beam Angle 36
    LED or Halogen LED
    Frequently Asked

    Is this bulb dimmable?

    No. The bulb uses a non-dimmable LED driver circuit. Attempting to use it with a dimmer switch may cause flickering, buzzing or premature failure. For dimmable MR16 options, please contact us or use the site filters to find compatible alternatives.

    What voltage does it require?

    The bulb operates on 12V AC or DC supply. It requires a compatible LED driver or transformer rated for LED loads. Older halogen transformers may work but can cause compatibility issues — using an LED-rated driver is recommended for reliable performance.

    Can it replace a 35W halogen bulb directly?

    Yes. The 345-lumen output and 36° beam angle closely match a standard 35W halogen MR16, making it a direct retrofit in most applications. The GU5.3 base is the same pin spacing, so the bulb fits existing lamp holders without modification.

    What does the 36° beam angle mean in practice?

    A 36° beam is classified as a narrow cone. It concentrates light onto a defined area approximately 1.2m wide when the bulb is positioned 2m from the surface, making it suitable for task lighting, accent lighting and directional applications rather than general room wash.

    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.