1. Universal Purpose 2. Reliable Safety Approvals 3. Low profile & Low Weight 4. Low No-load Losses 5. Low Mechanical Hum 6. Low Stray Magnetic Field 7. Low Operating temperature 8. High Efficiency 9. Good Static Insulation between Primary and Secondary 10. Punily Leakage Current 11. Easy to mount 12. Competitive price 115/230 Primary &120/240 Primary Toroidal Transformer Series 100VA~3000VA Primary: 100V, 115V, 120V, 230V, 240V / 50 Hz Secondary: customized Standard: UL506, UL1411, EN61558 Insulation Class: Class B, Class F, Class H Mounting: one metal plate, two rubber pads, one set of bolt & nut with washer, center-potting 130 Deg C Thermal Cutoff and Thermal Switch from 105 Deg C to 150 Deg C can be fitted when required.