Torus 1100 Isolation Transformer. The Torus 1100 toroid isolation transformer from Ultra Clean Systems is the perfect companion for the Model 1100 ultrasonic cleaning system. For those facilities with low limits on current leakage, the Torus 1100 will reduce leakage current to well below 100 μA (.1 mA) for increased safety for staff. Isolation Transformers at Farnell. Competitive prices from the leading Isolation Transformers distributor. ... Data Sheet. RoHS. MYRRA. ... Isolation Transformer ... Isolation Transformers. Discover a huge range of isolation transformers right here. Choose 120V isolation transformers, 240V isolation transformers and more from trusted brands. Place your order by 7pm Monday - Friday for same day dispatch. All Orders over GBP 5.00 qualify for free standard shipping. Order yours today! An isolation transformer is a transformer used to transfer electrical power from a source of alternating current (AC) power to some equipment or device while isolating the powered device from the power source, usually for safety reasons. The following must be specified when choosing an isolation transformer: Isolation Voltage – DC reference voltage with respect to ground at which the equipment will operate. Rated kVA – Maximum continuous kVA rating of transformer (after adjustment for harmonics is taken into account). Input Voltage – Voltage near ground potential.