Emergency LED Driver, 20 W Constant Output, 100-277 VAC Universal Input, 90-Minute Runtime

The D-EMS-20W is an emergency LED backup driver that maintains illumination from a luminaire's LED load when normal AC power is lost. It is intended for indoor commercial and institutional fixtures used with dry or damp location rated, grounded housings, where code-required egress illumination must be provided. The driver accepts universal 100-277 VAC, 50/60 Hz input at 100 mA maximum and delivers constant emergency output power, selectable at 10 W, 15 W, or 20 W by dial switch, for LED loads rated 25-48 V DC. Illumination time is a minimum of 90 minutes. Battery protection covers over-voltage, low-voltage, over-temperature and short-circuit conditions, and an illuminated low-voltage test switch with charging indicator is provided. The unit measures 382 mm x 55 mm x 32 mm and operates from 0 C to 50 C ambient. UL Listed under file E493915 for field or factory installation and RoHS compliant. Warranty is one year.