{"product_id":"energizer-3-4w-mr16-led-bulb-gu5-3-cool-white-4000k-non-dimmable","title":"Energizer 3.4W MR16 LED Bulb GU5.3 - Cool White 4000K Non-Dimmable","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Energizer 3.4W MR16 is an LED spotlight bulb with a GU5.3 bi-pin base, delivering 345 lumens of cool white 4000K light through a focused 36° beam angle. The bulb measures 50mm high by 45mm diameter and runs on standard 12V low-voltage circuits, making it a direct replacement for 35W halogen MR16 bulbs in existing track lighting, recessed downlights and display lighting fixtures.\u003c\/p\u003e\n\u003cp\u003eDesigned for task lighting and accent applications, the 4000K colour temperature sits between neutral white and daylight, providing clear visibility without the warmer amber tone of 3000K bulbs or the clinical blue-white of 6000K. This makes it well-suited to kitchens, home offices, retail display lighting, and anywhere concentrated light is needed for detail work or highlighting objects. The narrow 36° beam concentrates light into a defined pool rather than flooding an entire room.\u003c\/p\u003e\n\u003cp\u003eThe LED construction provides a rated 15-year lifespan based on average domestic use, outlasting halogen equivalents by approximately 10-12 years and reducing replacement frequency and maintenance. At 3.4W the bulb draws approximately 90% less power than the 35W halogen it replaces while delivering comparable lumens, reducing running costs on circuits with multiple bulbs. The bulb is non-dimmable and rated Energy Class E under the current UK\/EU energy labelling scheme.\u003c\/p\u003e\n\u003cp\u003eThe compact 45mm reflector diameter fits standard MR16 housings without modification, and the GU5.3 pin spacing matches the older GX5.3 designation used on some older fittings. The bulb operates on 12V AC or DC, requiring a compatible transformer or LED driver where mains voltage is being stepped down.\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\u003e45\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight (mm)\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDepth (mm)\u003c\/td\u003e\n\u003ctd\u003e45\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\u003eMR16 \/ GU5.3\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. This Energizer MR16 is non-dimmable and should not be paired with dimmer switches. Attempting to dim a non-dimmable LED can cause flickering, reduced lifespan or failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat voltage does it run on?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe bulb operates on 12V AC or DC, which means it requires a low-voltage transformer or LED driver to step down from mains 230V. Most existing halogen MR16 circuits already have the correct transformer in place.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between 4000K and 3000K?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e4000K is cool white with a neutral, slightly blue-toned light that appears cleaner and brighter. 3000K is warm white with a softer, amber-toned light closer to traditional incandescent. 4000K suits task areas like kitchens and offices, while 3000K suits living rooms and bedrooms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the 36° beam angle affect light spread?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 36° beam is considered narrow or medium-narrow, concentrating light into a defined circular pool approximately 1.2m wide when the bulb is 2m from the surface. This suits accent lighting, highlighting artwork, or task lighting where focused light is needed rather than general room illumination.\u003c\/p\u003e","brand":"Energizer","offers":[{"title":"Default Title","offer_id":46077996826891,"sku":"S8833","price":1.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/S8833-Front-On_9e24228f-ddad-47e2-88d4-30dce3721433.jpg?v=1730381628","url":"https:\/\/niori.co.uk\/products\/energizer-3-4w-mr16-led-bulb-gu5-3-cool-white-4000k-non-dimmable","provider":"Niori","version":"1.0","type":"link"}