LED Bulb GU10 4.6W 400lm Cool White

This GU10 LED bulb has a glass body, faceted around its sides, with a satin finish across the front that spreads and softens the light. It gives 400 lumens at a colour temperature of 4000K, a cool white that looks crisp and clean, noticeably whiter than the warm white many people choose for a lounge or a bedroom. The bulb is 5.4cm long and 5cm across, the familiar proportions of a GU10 spotlight bulb, and it has the two-pin GU10 cap, which pushes into the holder and twists to lock. It is rated IP20, which settles where it belongs: indoors, in dry rooms, and never in a bathroom or outdoors.

We would put it in kitchens, studies, utility rooms and home offices, anywhere a clear, bright white helps with the job in hand, whether that is chopping vegetables, reading a recipe or working at a desk. It suits ceiling spotlights, spotlight bars, track lighting and recessed downlights that take a GU10 cap, so it is an easy way to freshen a room or replace a bulb that has failed. We keep this cool white for the working spaces of a home, where clarity matters more than a cosy glow, and it suits anyone who prefers a crisp, modern look.

The bulb runs straight from mains voltage, 220-240V at 50/60Hz, so it needs no separate transformer. It is not dimmable, which means it belongs in a fitting on an ordinary switch rather than a dimmer circuit. Its energy class is D, and it weighs just 0.073KG packed. Glass gives the body a clean, durable surface that will not yellow the way some plastics do, and when the bulb is cool and the light is switched off at the wall, a soft, dry cloth keeps the satin front clear and bright.

Can I use this GU10 bulb in a bathroom?

No. It is rated IP20, which means it is for indoor, dry rooms only, so keep it away from bathrooms, showers and anywhere outdoors.

Will it work with a dimmer switch?

No, this bulb is not dimmable, so use it in a fitting controlled by an ordinary switch rather than a dimmer.

How bright is this bulb?

It gives 400 lumens of cool white light at 4000K, a crisp, clear white that works well in kitchens, studies and home offices.

What size is the bulb?

It is 5.4cm long and 5cm across, so check that your fitting takes a GU10 cap and has room for a bulb of that length.

What material is the body?

The body is glass, faceted around the sides, with a satin finish across the front that softens and spreads the light.

Which voltage does it need?

It runs on mains voltage of 220-240V at 50/60Hz, the usual household supply, so no separate transformer is needed.