The BL Series of Lighting Transformers are specialty, open frame style auto transformers, intended for internal mounting installations in lighting applications. These durable units are designed for adaptation to multiple industrial and commercial requirements allowing the use of typical 277 V power lighting fixtures on other input voltage systems. Used with LED drivers, fluorescent ballasts and other lighting devices, these products find their way in many markets from manufacturing, warehousing, office space, parking and garage to healthcare, hospitality, and streetlighting environments.