1. Technical parameters. Toroidal Transformer I Power Thermal Fuse Current Fuse Dimension (mm) Approval Mark GWB25VA 135 ºC 250V 2A 250V T 2A 80*35 CE UL TUV CQC GWB30VA 135 ºC 250V 2A 250V T 2A 83*35 CE UL TUV CQC GWB40VA 135 ºC 250V 2A 250V T 2A 87*35 CE UL TUV CQC GWB50VA 135 ºC 250V 2A 250V T 2A 93*34 CE UL TUV CQC GWB60VA 135 ºC 250V 2A 250V T 2A 93*35 CE UL TUV CQC GWB80VA 135 ºC 250V 2A 250V T 2A 102*35 CE UL TUV CQC GWB105VA 135 ºC 250V 2A 250V T 2A 114*38 CE UL TUV CQC GWB120VA 135 ºC 250V 2A 250V T 2A 113*41 CE UL TUV CQC GWB140VA 135 ºC 250V 2A 250V T 2A 114*42 CE UL TUV CQC GWB150VA 135 ºC 250V 2A 250V T 2A 117*43 CE UL TUV CQC GWB160VA 135 ºC 250V 5A 250V T 5A 120*43 CE UL TUV CQC GWB180VA 135 ºC 250V 5A 250V T 5A 125*42 CE UL TUV CQC GWB200VA 135 ºC 250V 5A 250V T 5A 124*49 CE UL TUV CQC GWB220VA 135 ºC 250V 5A 250V T 5A 127*50 CE UL TUV CQC GWB240VA 135 ºC 250V 5A 250V T 5A 129*48 CE UL TUV CQC GWB250VA 135 ºC 250V 5A 250V T 5A 130*52 CE UL TUV CQC GWB260VA 135 ºC 250V 5A 250V T 5A 130*53 CE UL TUV CQC GWB280VA 135 ºC 250V 5A 250V T 5A 138*45 CE UL TUV CQC GWB300VA 135 ºC 250V 5A 250V T 10A 138*54 CE UL TUV CQC GWB320VA 135 ºC 250V 5A 250V T 10A 138*54 CE UL TUV CQC GWB340VA 135 ºC 250V 5A 250V T 10A 138*54 CE UL TUV CQC GWB360VA 135 ºC 250V 5A 250V T 10A 142*55 CE UL TUV CQC GWB380VA 135 ºC 250V 5A 250V T 10A 146*54 CE UL TUV CQC GWB400VA 135 ºC 250V 5A 250V T 10A 148*56 CE UL TUV CQC GWB420VA 135 ºC 250V 5A 250V T 10A 148*56 CE UL TUV CQC GWB440VA 135 ºC 250V 5A 250V T 10A 148*60 CE UL TUV CQC GWB460VA 135 ºC 250V 5A 250V T 10A 149*64 CE UL TUV CQC GWB480VA 135 ºC 250V 5A 250V T 10A 153*59 CE UL TUV CQC GWB500VA 135 ºC 250V 5A 250V T 10A 155*62 CE UL TUV CQC 2. We have attained VDE,UL,CE,ISO9000 approval .we guarantee quality is the first. Test process 1 .No-load test (included no-load voltage,no load current and no load loss) 2.iInductive voltage test 3. Load test (load voltage and temperature rise 4. Temperature rise test . 5.Insulated resistance 6.Hi-pot test 7.Leakage inductance test 8.DC resistance test 9.Surface inspection. 3.customized audio toroidal transformer and solar energy transformer Application: 220V 24V Toroidal Power Transformer 1). Application: 1. audio equipment 2. electric control 3. computer 4. solar device 5.telecommunications 6.high-end and middle-end vedio etc 2). Advantages: 1.High quality 100% copper core 2.a full range of toroidal transformer 3.Specially sales and technical services:5-10Years 4.With 14 years' producing history in transformer industry 5.our company have cooperated with many customers around the world and gained good reputation at home and abroad.