DCB fluorescent ballasts emergency ballasts allow the same fixture to be used for both normal and emergency operation.
In the event of a power failure, the emergency ballast switches to
emergency mode and operates one ore two of the existing lamps for a
minimum of 90 minutes.
Each emergency ballast contains a battery, charger and invertor
circuit in a single package. The emergency ballast can be mounted in
the fixture wireway or on top of the fixture, and is UL listed for
factory installation or retrofit applications.
