Energizer LED GU10 Bulb, Dimmable, 4.6W, 375 Lumen, Cool White 4000K

Energizer products are recognised as one of the most trusted and highly desirable consumer lighting brands. This dimmable GU10 LED bulb gives 375 lumens of clean 4000K cool white light from 4.6W, a 50W halogen-equivalent output, and works with a compatible LED dimmer switch for full control over brightness. It's manufactured to the latest industry regulations as a reliable, energy-saving upgrade from an old halogen GU10 spotlight.

Key features

• 4.6W LED consumption for a 50W halogen-equivalent light output
• 375 lumens of crisp 4000K cool white light
• Dimmable, for use with a compatible LED (trailing-edge) dimmer switch
• 36° beam angle for a focused, directional spread of light
• Standard GU10 twist-and-lock base, no rewiring or transformer needed
• Backed by the Energizer brand, built to current lighting industry standards

What this bulb is best for

Being dimmable, this Energizer GU10 suits living rooms, dining areas and bedrooms where you want to adjust the mood, as well as kitchens with dimmer-controlled downlights, anywhere flexible cool white light is useful. Check your dimmer switch is LED-compatible before fitting.

How to fit it

1. Turn off the power at the switch or consumer unit before you start.
2. Let the old bulb cool down fully if it's just been switched off.
3. Twist the old bulb anti-clockwise a quarter turn and pull it free of the GU10 fitting.
4. Push the new Energizer GU10 bulb into the fitting and twist it clockwise until it locks in place.
5. Restore the power and test the light, including at different dimmer settings. No transformer or separate driver is needed, the driver circuitry is built into the bulb.

Frequently asked questions

Will this bulb work with my existing dimmer switch?
It's designed for LED-compatible (trailing-edge) dimmers. An older leading-edge dimmer built for halogen bulbs may cause flickering, buzzing or a limited dimming range, so check your switch is LED-rated for the best results.

What's the difference between this and Energizer's non-dimmable 4.2W cool white GU10?
Both give a similar 4000K cool white light, but this 4.6W version is dimmable for adjustable brightness, while the 4.2W version is non-dimmable and intended for standard on/off circuits only.

Why does my dimmable GU10 flicker at low brightness?
This is usually caused by an incompatible or overloaded dimmer switch rather than the bulb itself. Try a dedicated LED trailing-edge dimmer, and check the dimmer's minimum load rating against the number and wattage of bulbs on the circuit.

Is 375 lumens bright enough for a living room?
Used across several fittings, yes, 375 lumens per bulb is a solid mid-range output for GU10 downlights, and the ability to dim it means you can turn it down for evenings and up for brighter, functional light.

Technical specification

More GU10 bulbs

• Energizer LED GU10 Bulb, 4.2W, 345 Lumen, Cool White 4000K
• Energizer LED GU10 Bulb, Full Glass, 4W, 345 Lumen, Cool White 4000K
• Energizer LED GU10 Bulb, 4.2W, 345 Lumen, Warm White 3000K
• Shop the full GU10 Bulb collection