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Fluorescent Emergency Ballast - 500 Lumens - Time Delay

120/277 Volt • 90 Minute Emergency Operation • Time Delay Feature

36.95 $ Topbulb

Order Code: VSBAL500TD

Price: $36.95

Ships in 5-10 Days

This item usually ships in 5-10 days after order is placed.

This fluorescent emergency ballast works with or without an AC ballast to convert new or existing fluorescent fixtures into unobtrusive emergency lighting.

Operates 1 lamp in emergency mode for 90 minutes and provides up to 500 initial lumens of light output. Compatible with most one-, two-, three-, and four-lamp electronic, standard and dimming AC ballasts.


  • 1 Lamp: 17W - 40W T8 and T12
  • 1 Lamp: 13W - 26W CFL 4-pin
  • 1 Lamp: 18W - 36W Long CFL 4-pin


  • Dual 120/277 voltage
  • Charge rate/power “ON” LED indicator light and push-to-test< switch for mandated code compliance testing
  • 2.4V long-life, maintenance-free, rechargeable Sealed NiCd
  • Internal solid-state transfer switch automatically connects the internal battery to fluorescent lamp for minimum< 90-minute emergency illumination
  • Fully automatic solid-state, two-rate charger initiates battery charging to recharge a discharged battery in 24 hours


  • Suitable for installation inside, on top or in remote of the
  • Can be used in both switched and unswitched fixtures
  • UL listed for factory or field installation

Dimensions: 9.5" x 2.4" x 1.5"

See document below for complete specifications.


About Topbulb Best Source

Topbulb, a Victoria Supply Company, has been selling lighting products for over 80 years. Topbulb sells general and specialty light bulbs and accessories to customers all over the world. The company works to maintain a full inventory of over 1 million bulbs that are ready for same-day shipping. When you place an order, Topbulb guarantees that we are providing you with the highest quality light bulbs for the lowest price from the best available source.

Watts & Number of Lamps NA
Voltage 120/277

Topbulb Order Code VSBAL500TD
Brand Topbulb Best Source