--- product_id: 49934308 title: "12V 20-60W Transformer, 60 W, Halogen Dimmable" brand: "knightsbridge" price: "£11.76" currency: GBP in_stock: true reviews_count: 13 category: "Knightsbridge" url: https://www.desertcart.co.uk/products/49934308-12v-20-60w-transformer-60-w-halogen-dimmable store_origin: GB region: Great Britain --- # 20-60W power range Pre-terminated leads for easy install Thermal fuse heat protection 12V 20-60W Transformer, 60 W, Halogen Dimmable **Brand:** knightsbridge **Price:** £11.76 **Availability:** ✅ In Stock ## Summary > ⚡ Illuminate smarter, not harder — power your halogen lights with confidence! ## Quick Answers - **What is this?** 12V 20-60W Transformer, 60 W, Halogen Dimmable by knightsbridge - **How much does it cost?** £11.76 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/49934308-12v-20-60w-transformer-60-w-halogen-dimmable) ## Best For - knightsbridge enthusiasts ## Why This Product - Trusted knightsbridge brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built-In Thermal Safety:** Advanced thermal cut-out and fuse protect against overheating, giving you peace of mind and durability. - • **Plug & Play Convenience:** Comes with pre-terminated leads for a hassle-free, quick installation—no electrician needed. - • **Optimized for Halogen, Not LED:** Specifically engineered for 12V halogen lamps to deliver consistent, flicker-free lighting every time. - • **Reliable Isolation Transformer:** Safety isolating design with overload and short circuit protection keeps your home safe and compliant. - • **Power Your Space with Precision:** Dimmable 20-60VA output tailored for low voltage halogen lighting, ensuring perfect ambiance control. ## Overview The Knightsbridge 12V 20-60W Transformer is a compact, dimmable AC transformer designed exclusively for low voltage halogen lamps. Featuring thermal fuse protection and overload safety, it ensures reliable, safe operation. Pre-terminated leads simplify installation, making it ideal for quick upgrades or replacements in residential lighting setups. Not compatible with LED lamps. ## Description Product Description 20-60VA Dimmable 12V AC TransformerSafety isolating transformer with overload & short circuit protectionThermal cut-out to prevent overheating Safety Warning Not suitable for LED lamps P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Box Contains transformer See more Review: Great transformer for bath extractor light - Bought to replace a transformer in our Blauberg extractor fan over the bath - easy to connect up and now the light works again. Great stuff. Review: Easy to fit with pre-terminated cables. - Fitted to run 2 x 35w halogen kitchen downlighters. Replaced a 20 + year old unit that had failed. Total job took 10 minutes, made easier with the pre-terminated cable ends (rather than just bared ends). So far the unit runs stably and cool. No dimming function in the set up so cannot comment on that side of the functionality. Excellent price and fast delivery. ## Features - Standard 20-60VA dimmable 240V - 12V AC Transformer/Driver - For Low Voltage Halogen Lamps - not suitable for LED - Dimmable with most Dimmer Switches - Soft Start with Thermal fuse for heat protection - Complete with Leads ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00A0J0KOM | | Batteries required | No | | Best Sellers Rank | 7,155 in DIY & Tools ( See Top 100 in DIY & Tools ) 1 in Transformers (DIY & Tools) | | Customer Reviews | 4.4 4.4 out of 5 stars (2,322) | | Date First Available | 14 Aug. 2012 | | Included components | 12V 20-60W Transformer for ELV Lighting | | Item model number | T02 | | Manufacturer | Knightsbridge | | Number of pieces | 1 | | Product Dimensions | 2.3 x 3 x 12 cm; 90 g | | Specific uses | Used to power 12V Halogen lamps only - not suitable for LED | | Warranty description | 12 months | ## Product Details - **Brand:** Knightsbridge - **EU Spare Part Availability Duration:** 1 Years - **Mounting type:** Surface Mount - **Power source:** Corded Electric - **Specification met:** CE, UKCA ## Images ![12V 20-60W Transformer, 60 W, Halogen Dimmable - Image 1](https://m.media-amazon.com/images/I/61ZRqFH6SwL.jpg) ## Questions & Answers **Q: does this work as an led lights transformer?** A: works with led bulbs from Sainsburies, gu5.3, 345 lumens **Q: With 240v ac input, it's giving me 2.5 vac off-load, and 0.5 v with 100 ohm load. what am i doing wrong? should be 12 vac** A: This transformer is only designed to be used with halogen 12v lamps. Without using the correct load of at least 1x 12v 20w Halogen lamp this transformer will not function or give an output. It is also not suitable for an LED load even if the lamp is rated at 12v. If you connect 4x 5w LED lamps to give you the minimum load of 20w the inrush current that LED lamps demand will cause the lamps to flash and not settle into a continuous light output. This is due to the soft start feature and the protection from short circuits and overloading. **Q: can i use this to power a 12v AC extractor fan?** A: These electronic transformers are designed for LV-Halogen lamps! I wouldn't know if it will work for your fan, you need to chek with an electrician! **Q: Can you use your own cables (e.g. are there terminal blocks to screw them onto) ?** A: On the unit I received in 7/2019, there is no terminal cover to remove. The unit is sealed shut. You must use the leads that are already attached. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great transformer for bath extractor light *by J***X on 30 December 2025* Bought to replace a transformer in our Blauberg extractor fan over the bath - easy to connect up and now the light works again. Great stuff. ### ⭐⭐⭐⭐⭐ Easy to fit with pre-terminated cables. *by M***E on 1 December 2020* Fitted to run 2 x 35w halogen kitchen downlighters. Replaced a 20 + year old unit that had failed. Total job took 10 minutes, made easier with the pre-terminated cable ends (rather than just bared ends). So far the unit runs stably and cool. No dimming function in the set up so cannot comment on that side of the functionality. Excellent price and fast delivery. ### ⭐⭐⭐⭐ Works but extra comes with pre-attached wires *by S***E on 4 March 2021* This does the job but I should have bought one without wires. Because they are pre-attached (and not obvious how to remove them) it was necessary to connect to the mains using a connector block. After this I've bought ones to which mains and 12V wires can be attached. It is great value and, like I've mentioned, it works so no complaints about the functioning. But be sure you need to wires already attached. ## Frequently Bought Together - Knightsbridge 12V 20-60W Transformer, 60 W, Halogen Dimmable - 10 Pack of MR16 GU5.3 Led Bulb Base Ceramic Socket,FINELED MR16 G5.3 Mr11 Lamp Holder for 12V Halogen & LED Bulb,Wire Connector Base Socket Adapter - 5Pack Philips Halogen 12V MR16 50W GU5.3 36D 4000Hrs Dimmable Halogen Dichroic 58845100 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/49934308-12v-20-60w-transformer-60-w-halogen-dimmable](https://www.desertcart.co.uk/products/49934308-12v-20-60w-transformer-60-w-halogen-dimmable) --- *Product available on Desertcart Great Britain* *Store origin: GB* *Last updated: 2026-04-22*