Emergency Ballasts

Trust Keystone's Emergency Ballasts

Emergency situations require superior dependability. When the power fails, trust only Keystone's emergency ballasts to keep the area safely lit. Keystone's emergency ballasts allow your jobsite to stay ahead of building code requirements while letting you rest assured that the lights won't go out. Count on Keystone when it matters most.

Each Keystone emergency ballast comes packaged with a test swtich that includes and LED indicator light for simplified use in factory or retrofit installations. 

Click on the Catalog Numbers in the table below to download a spec sheet for each emergency ballast.