G9 Capsule LED Bulb 4W - Daylight

This G9 capsule LED bulb is a compact bi-pin replacement for the tiny halogen capsules used in pendants, wall fittings and small decorative luminaires. It draws just 4 W while producing 520 lumens, standing in for an old 42 W capsule and cutting the running cost considerably. The colour temperature is a crisp 6500K daylight tone, and the wide 320 degree beam angle spreads light almost all the way around the bulb rather than firing it in one direction. American buyers will recognise the G9 base as a small bi-pin cap, the same two-pin format that capsule fittings take on both sides of the Atlantic.

The wide spread and small body make this bulb a natural fit for multi-lamp fittings where several capsules share the work, such as cluster pendants, picture lights and compact wall lights in kitchens, hallways and living areas. The 6500K daylight output reads clean and bright, which suits task corners, dressing areas and detail-led displays where a cooler, more neutral light helps. Because this is a dry indoor bulb rated to IP20, keep it to interior fittings and clear of bathrooms, porches and any damp or outdoor location. At 520 lumens per lamp it works best in numbers, layering several capsules to light a room rather than carrying a space on its own.

The bulb measures a slim 16 mm diameter by 50 mm long and weighs only 12 g, so it slots neatly into the close confines of capsule housings. It runs on 220 to 240 V AC mains through the twist-in G9 pins, with no transformer needed, and reaches an efficiency of 130 lm/W. Colour rendering sits at Ra 80 for everyday accuracy, and the rated lifespan is 20,000 hours. Note that this bulb is non-dimmable, so pair it with a standard on/off circuit. The finish is a plain white capsule body.

Product Specification Sheet

Range Datasheet

Which fitting does this bulb need?

It has a G9 bi-pin cap, the small two-pin base used in capsule fittings such as cluster pendants, wall lights and decorative luminaires. The pins simply push and twist into the holder, and it runs straight from 220 to 240 V mains with no transformer required.

What old bulb wattage does it replace?

At 4 W actual draw it produces 520 lumens, which matches the output of a 42 W halogen capsule. You get a similar level of light for a fraction of the power, while the bulb itself only ever draws 4 W.

What does the 6500K daylight tone look like?

6500K is a crisp, cool daylight white that reads clean and bright rather than warm or yellow. It suits task corners, dressing areas and display fittings where a neutral, daylight-like light is helpful. Colour rendering is Ra 80 for accurate everyday colour.

Is this bulb dimmable?

No, this G9 capsule is non-dimmable and should be used on a standard on/off circuit. Fitting it to a dimmer switch can cause flicker or shorten its life, so leave the dimming out. The rated lifespan is 20,000 hours on a normal switched supply.