Low-Profile Fluorescent Emergency Ballast – 500 Lumens, UL 924, Time Delay

500-Lumen Fluorescent Emergency Ballast – Features & Specs The BAL500LPTD emergency ballast delivers up to 500 lumens of backup illumination for a minimum of 90 minutes. Its low-profile steel housing fits compact fixtures and operates one lamp in emergency mode. It works with or without an AC ballast and includes a sealed NiCd battery, red LED test/indicator, and a built-in time-delay circuit for EOL (end-of-lamp-life) protection. Browse all fluorescent emergency ballasts. UL 924 500 lm / 90 min 120/277V Time Delay Low Profile 1.18" Spec Sheet Download BAL500LPTD Emergency Ballast Spec Sheet (PDF) Features & Benefits Converts fluorescent fixtures to emergency operation; works with or without an AC ballast 500-lumen initial output; 90-minute emergency runtime (1 lamp) Red LED charge/power indicator and push-to-test switch Internal solid-state transfer; two-rate automatic charger (24-hour recharge) Low-profile galvanized steel housing for shallow/compact fixtures Suitable for sealed/gasketed fixtures Electrical Specifications Dual voltage: 120/277V Input power: 3.0W Input current: 0.130A @ 120/277V Battery: 4.8V sealed NiCd; 24-hour recharge Mounting / Housing Installs inside, on top of, or remote from the fixture Remote distance: up to 50 ft and not more than ½ of the AC ballast’s rated lamp-to-ballast distance Dimensions: 11.7" L × 2.0" W × 1.18" H Compliance & Warranty UL 924 Listed; meets NFPA 101, NEC, and OSHA Damp-location rated (0°C to 50°C) 5-year limited warranty (lamps excluded) Frequently Asked Questions How many lamps does it support? One compatible fluorescent lamp in emergency mode at up to 500 initial lumens for 90 minutes. Which lamp types are compatible? T5 / T5HO, T8, T12, 2G11 and GR10q-4 CFL, circular T5/T9, and U-bend fluorescent lamps. Check the fixture’s lamp wattage against the compatibility chart on the spec sheet. Can it be remote-mounted? Yes—up to 50 ft, and the run must not exceed one-half of the AC ballast’s rated lamp-to-ballast distance. Does it work with LED replacement tubes? No. This is a fluorescent emergency ballast. For LED Type B/C retrofits or LED fixtures, use a listed LED emergency driver designed for those lamps. Is it suitable for sealed or gasketed fixtures? Yes. It’s listed for use in sealed/gasketed and enclosed fluorescent fixtures when installed per instructions. What testing/maintenance is required? Use the LED indicator/push-to-test for checks. Follow NFPA 101: brief monthly functional tests and an annual 90-minute test. Replace the battery if it no longer supports full duration. What’s the operating environment? Damp-location rated; ambient 0 °C to 50 °C. For wet locations, install inside a suitable listed enclosure/fixture.