{"product_id":"energizer-3-4w-gu10-led-bulb-non-dimmable-cool-white-4000k","title":"Energizer 3.4W GU10 LED Bulb Non-Dimmable - Cool White 4000K","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Energizer 3.4W GU10 LED bulb provides 345 lumens of cool white 4000K light through a 36° beam angle, designed to replace 50W halogen GU10 bulbs in downlights, track lights and recessed fittings. The non-dimmable LED draws 3.4W on 230V mains and is rated for a 25-year average lifespan based on typical domestic use, reducing the frequency of bulb replacements in ceiling fixtures.\u003c\/p\u003e\n\u003cp\u003eThe 4000K colour temperature sits in the cool white range, producing a neutral-to-slightly-blue-tinted light that works well in kitchens, bathrooms, utility rooms, garages and commercial environments where task visibility matters more than warmth. The 36° beam angle concentrates light into a focused spot rather than a wide flood, making it suitable for accent lighting, highlighting worktops, or fitting into directional ceiling downlights where the beam needs to be aimed at a specific surface.\u003c\/p\u003e\n\u003cp\u003eThe bulb measures 50mm diameter by 54mm height and fits the standard GU10 twist-and-lock base common in UK downlight fittings. At 30g per bulb, it weighs marginally more than a halogen equivalent but sits flush in most ceiling fixtures without needing modification. The 345-lumen output and 36° beam give a narrower, more defined pool of light compared to wider-angle GU10 LEDs, so spacing between fittings may need adjustment if replacing wide-angle halogens.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (KG)\u003c\/td\u003e\n\u003ctd\u003e0.03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth (mm)\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight (mm)\u003c\/td\u003e\n\u003ctd\u003e54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDepth (mm)\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWattage\u003c\/td\u003e\n\u003ctd\u003e3.4W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumen\u003c\/td\u003e\n\u003ctd\u003e345\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp Shape\u003c\/td\u003e\n\u003ctd\u003eSpot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp Base\u003c\/td\u003e\n\u003ctd\u003eGU10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Rating\u003c\/td\u003e\n\u003ctd\u003eE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKelvin\u003c\/td\u003e\n\u003ctd\u003e4,000K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour Temperature\u003c\/td\u003e\n\u003ctd\u003eCool White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimmable\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBeam Angle\u003c\/td\u003e\n\u003ctd\u003e36\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED or Halogen\u003c\/td\u003e\n\u003ctd\u003eLED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eIs this bulb dimmable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The Energizer 3.4W GU10 LED is non-dimmable and should not be used with dimmer switches. Attempting to dim a non-dimmable LED can cause flickering, buzzing or premature failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between 4000K and warm white?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e4000K cool white produces a neutral-to-slightly-blue light that enhances task visibility and concentration. Warm white (2700K-3000K) has a yellow-amber tone closer to traditional tungsten bulbs. Cool white suits functional spaces like kitchens and bathrooms; warm white suits living rooms and bedrooms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the 36° beam angle mean?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 36° beam creates a focused spot of light rather than a wide flood. This makes the bulb suitable for accent lighting, highlighting specific areas, or fitting into directional downlights. Wider beam angles (60°+) spread light more evenly across a room.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it replace a 50W halogen directly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, in terms of fitting and installation. The GU10 base is a direct swap. However, the 345-lumen output and 36° beam differ from most 50W halogens, which typically produce 400-450 lumens with a wider beam. Check the beam angle of your existing halogen before replacing to ensure lighting coverage remains consistent.\u003c\/p\u003e","brand":"Energizer","offers":[{"title":"Default Title","offer_id":46075298906379,"sku":"S8872","price":1.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/S8872_1_a50af01c-e17c-40df-bf0e-fa632ffe93a2.jpg?v=1730318762","url":"https:\/\/niori.co.uk\/products\/energizer-3-4w-gu10-led-bulb-non-dimmable-cool-white-4000k","provider":"Niori","version":"1.0","type":"link"}