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Transformer step down 480v to 277v 250W Keystone’s 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 ^

This Item Replaces

This product is a direct replacement for the following items:


BrandKeystone Technologies
Actual Wattage250
Length (Inch)9.49
Width (Inch)1.7
Height (Inch)1.2
Manufacturers Warranty5 year warranty
Manufacturers Notes• Non-Isolated Autotransformer • Sound Rated A • 5 Year Limited Warranty • For Use with T5, T8, CFL, or Electronic HID Ballast Operating at 277V Input Voltage • Insulation Rating: 105ºC Class A • UL and cUL 5085 Approved • Thermally Protected

ALB Price: $59.95 $56.93 (You save $3.02)
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