480 Volt to 277 Volt 375 Watt Step Down TransformerKeystone Technologies' 480V to 277V Step Down Auto Transformers are designed to step down 480V to 277V single phase power. These transformers enable consumers to utilize common universal voltage (120 277V) electronic ballasts in applications where the main facility power is 480V. This item is Keystone part number KTAT 375 480 277. It is a Non Isolated Autotransformer that is Sound Rated A. They carry a 5 Year Limited Warranty and are for Use with LED,
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480 Volt to 277 Volt 375 Watt Step Down Transformer