Site transformers / sitemasters including single phase and three phase. Portable site transformers manufactured by our industrial electrical power transformer division Transpower. Our range of low-voltage site power transformers includes small 3kVA and 5kVA light-weight tool transformers (listed online at Transpower) as well as heavy-duty sitemasters, with a wide range of options available, including 5kVA transformers, 10kVA transformers, 15kVA transformers and 20kVA transformers. IP44 and IP65 available. A more comprehensive list of Sitemasters is listed online atTranspower. Often used as construction site transformers / building site transformers / temporary transformers. Step down – mainly 240V to 110V and 415V to 110V - (110V to 240V step-up transformers are also available, please contact us for more information). We can supply some 110V site transformers from stock - contact us today. We can also supply sitemasters on wheels, for easier movement around site – ask for details. If you can't see what you require, contact us about custom-build/bespoke transformers as our full range is much more extensive.