Transformers An extensive range of transformers, custom built or ex-stock for immediate delivery. CLICK EACH TITLE FOR MORE INFORMATION. Stock range single phase 25VA to 7.5KVA Custom range single phase 25VA to 30KVA Custom range 3 phase 120VA to 100KVA Heat loss date for single phase transformers Custom range dry type, cast resin & oil cooled 3 phase up to 10MVA Custom range toroidal & SlimTRAN 30VA to 500VA Custom range PCB & chassis mounted 6VA to 300VA Custom built auto wound motor starting transformers open or closed types Portable range single & 3 phase 750VA to 10KVA Current transformers standard ranges and custom built types Single & 3 phase variable auto transformers open & closed types Constant voltage transformers, ultra-isolation transformers, medical isolation transformers & transient voltage suppressors Custom built single & three phase enclosed transformers with accessories Open or enclosed custom built single & 3 phase auto transformers in classes A, E, F and for IP65/Ex enclosures