Energizer LED GU10 Bulb, 5.5W, 375 Lumen, Cool White Dimmable

The Energizer LED GU10 bulb combines 375 lumens of 4000K cool white light with full dimmable control, using just 5.5W to replace a 50W halogen GU10. Its full glass construction gives a premium look and feel, and smooth dimming lets you adjust brightness to suit the task or time of day. As a genuine Energizer product it runs directly from UK mains, with no transformer needed.

Key features

• 375 lumens from 5.5W, replacing a 50W halogen GU10
• 4000K cool white colour temperature – brighter and crisper than warm white, softer than daylight
• Fully dimmable for adjustable brightness
• Full glass construction for a premium finish
• Standard GU10 twist-and-lock base, no transformer needed
• Genuine Energizer quality, built to current lighting regulations

What this bulb is best for

This cool white dimmable GU10 suits kitchens, home offices and bathrooms where a bright, business-like light is wanted but the ability to dim down in the evening is also useful. It works well over worktops, desks and mirrors.

How to fit it

1. Switch off the power at the wall switch or consumer unit and let any old bulb cool down fully
2. Twist the old bulb anticlockwise a quarter turn and gently pull it from the fitting
3. Line up the two pins of the new Energizer GU10 bulb with the fitting
4. Push the bulb in and twist it clockwise a quarter turn until it locks in place
5. Restore the power and test the light – no transformer or driver is needed

Frequently asked questions

Will this bulb dim smoothly on any dimmer switch?

It's designed to dim, but for the smoothest, flicker-free results it should be paired with an LED-compatible trailing-edge dimmer rather than an older leading-edge dimmer built for halogen bulbs.

What does 4000K cool white actually look like?

4000K sits between warm white (3000K) and daylight (6500K) – a bright, fairly neutral white that suits task areas like kitchens without feeling as clinical as full daylight.

Is the glass finish more fragile than plastic-bodied GU10 bulbs?

The full glass construction is designed for normal household handling and gives a premium appearance, though as with any glass product it should be fitted carefully.

Can I use this bulb in a bathroom?

That depends on the downlight fitting's IP rating rather than the bulb itself. Only fit it into a downlight rated for bathroom use in the relevant zone.

Technical specification

More GU10 bulbs

• Energizer LED GU10 Bulb, 6.2W, 425 Lumen, Daylight, 36° Beam Angle
• Energizer LED GU10 Bulb, 5.5W, 375 Lumen, Warm White Dimmable
• Energizer LED GU10 Bulb, 3.6W, 345 Lumen, Daylight Dimmable
• Shop all GU10 bulbs