Extended Run-Time Products
While 90 minutes is the standard code-required time for emergency lighting operation, there are cases in which more than a 90-minute runtime is required or desired. For example, a hospital, school or assisted living facility might benefit from a longer emergency lighting runtime. Philips Emergency Lighting offers emergency ballasts with two- and four-hour runtimes to accommodate special applications.
Extended runtime emergency ballasts are compatible with electronic, standard, energy-saving and dimming AC ballasts. These models are UL Listed for factory or field installation.
Product Details:
| Model | No. of Lamps | Lumen Output |
| B54 | 4 Hours | 225 - 450 |
| B70A | 2 hours | 600 - 700 |
| B426-2HRS | 2 hours | 450 - 950 |
