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Lighting transformersThere are 13 products.

Lighting transformers
These are electronic transformers suitable for 12 volt (usually) halogen lighting. All are dimmable, providing they are used with a dimmer switch that can operate with a 12 volt supply. All feature a thermal cut-out, plus short circuit and overheat protection. They are lightweight and compact in size. When choosing a transformer a 12V lighting system, it is important that the wattage rating of the transformer is equal to or greater than the total wattage of all the bulbs being run off it. Pre-wired or non  pre-wired transformers are interchangeable, the easiest way to convert a pre-wired one to take cables that normally go into the transformer is to connect the cables outside with 'choc blocks' which we can supply if requested in the comments section.