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480V:347V:277V Step Down Autotransformers

Step down autotransformers for lighting applications from Thomas Research
The 480:347:277V Series from Thomas Research Products are step down autotransformers designed especially for lighting applications. These devices are typically used in conjunction with 277 V T-5 or T-8 Electronic fluorescent ballasts, LED drivers, or electronic HID ballasts in industrial and commercial applications. Datasheet

 Thomas Research Products' 480V:347V:277V Step Down Autotransformers
Features
  • Input voltage: 480 V, 60 Hz or 347 V, 60 Hz
  • Insulation rating: 125 & 460– 105ºC,
    245– 130ºC
  • Output voltage: 277 V, 60 Hz
  • Non-isolated autotransformer

Digi-Key P/N Manufacturer P/N Description
1121-1003-ND 480:347:277-125VA-IC XFRMR 347/277V 125VA STEP-DOWN
1121-1004-ND 480:347:277-460VA-IC XFRMR 347/277V 460VA STEP-DOWN
1121-1005-ND 480:347:277:220-245VA-IC 347/277:220V 245VA STEP-DOWN