{"product_id":"jcb-4-9w-gu10-led-bulb-3000k-warm-white-non-dimmable-4-pack","title":"JCB 4.9W GU10 LED Bulb 3000K Warm White Non-Dimmable - 4 Pack","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe JCB 4.9W GU10 LED bulb is a direct replacement for 50W halogen spotlights, delivering 345 lumens at 3000K warm white from a standard GU10 twist-lock base. Each bulb in the 4-pack measures 50mm diameter by 57mm height and uses 90% less energy than the halogen equivalent it replaces. The bulbs are non-dimmable and rated Energy Rating G under current UK energy labelling.\u003c\/p\u003e\n\u003cp\u003eDesigned for downlights, track lighting, and recessed ceiling fittings across residential and commercial installations, the bulbs fit any GU10 lampholder without adapters or modifications. The 3000K colour temperature produces a warm white glow comparable to traditional halogen, making the transition visually seamless in living rooms, bedrooms, hallway downlighters, and kitchen ceiling spots. The 4-pack format allows you to replace a full room's worth of bulbs in one go or keep spares on hand.\u003c\/p\u003e\n\u003cp\u003eEach bulb weighs 35g (0.14kg for the 4-pack) and has a rated lifespan of 10,000 hours under typical domestic use — approximately 10 years at 3 hours per day. The spot beam angle concentrates light downwards rather than spreading it wide, matching the directional output of the halogen bulbs these replace. The non-dimmable circuit means they should only be used on standard on\/off switches, not variable dimmer controls.\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\u003e0.14\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\u003e57\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\u003e4.9W\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\u003eG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKelvin\u003c\/td\u003e\n\u003ctd\u003e3,000K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour Temperature\u003c\/td\u003e\n\u003ctd\u003eWarm 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\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\u003eCan these bulbs be used with dimmer switches?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. These are non-dimmable LED bulbs and will not work correctly on dimmer circuits. Attempting to dim them may cause flickering, buzzing, or premature failure. Use them only with standard on\/off switches.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat halogen wattage do these replace?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach 4.9W LED bulb replaces a 50W halogen GU10 bulb, delivering comparable brightness at 345 lumens while using 90% less energy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long do these bulbs last?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eJCB rates these bulbs at 10,000 hours typical lifespan. At 3 hours per day average use, that works out to approximately 10 years before replacement is needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the light colour match my existing halogen bulbs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 3000K warm white colour temperature is very close to standard halogen output, so the transition should be visually seamless. If you're replacing a mix of halogen and LED in the same room, you may notice a slight difference until all bulbs are replaced.\u003c\/p\u003e","brand":"JCB","offers":[{"title":"Default Title","offer_id":46074262814987,"sku":"S15147","price":2.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/S14157_1_8e3573bd-4847-4f72-87a1-7ec0b2af02f3.jpg?v=1730312641","url":"https:\/\/niori.co.uk\/products\/jcb-4-9w-gu10-led-bulb-3000k-warm-white-non-dimmable-4-pack","provider":"Niori","version":"1.0","type":"link"}