Why do we have transformers in the office - Isolation transformers are used for safely working on equipment - Variacs for adjustable voltages for testing - Power supply transformers for powering equipment - Pulse transformers for SCR firing applications ( - HMD, Mineral Tech) - Chokes for filtering for drives - Chokes as loads for drives Power Supply Transformers Legrand make a range of DIN rail mount transformers. They come with a high quality covering so that they are electrially safe to touch and also look professional. They are available from [RS](https://au.rs-online.com/web/c/power-supplies-transformers/transformers/din-rail-transformers/?applied-dimensions=4294966176),