Description
Replacement T5/T8/T12 Emergency Ballast | 120/277V | NiCD Battery | 90-Minute Backup
Keystone Technologies KT-EMRG-500 is a 500-lumen emergency ballast, designed for new or existing fluorescent fixtures to provide emergency illumination for 90 minutes during power outages. It operates one lamp in emergency mode and is compatible with most electronic, standard, and dimming AC ballasts. Featuring a 2-in-1 LED indicator light and push-to-test switch, this ballast ensures compliance with emergency lighting regulations. The internal NiCD battery fully recharges within 24 hours via an automatic solid-state charger.
Features
- Lumen Output: 500 lumens in emergency mode
- Input Voltage: 120/277V, 60Hz
- Battery Type: 2.4V Sealed Nickel Cadmium (NiCD)
- Emergency Runtime: 90 minutes
- Recharge Time: 24 hours
- Time Delay Technology helps prevent end-of-life circuit issues
- 2-in-1 LED Indicator Light & Push-to-Test Switch
- Usable in sealed and gasketed fixtures
- UL924, NFPA 101 Life Safety Code, NEC, OSHA Compliant
- Suitable for Damp Locations
- Mounting: Inside, on top, or remote from fixture (up to 50 ft.)
- 5-Year Warranty
Lamp Compatibility
Operates one of the following lamp types under emergency power:
- T5 (21W-28W)
- T5HO (24W)
- T8 (25W-32W)
- T12 (25W-34W)
- 4-Pin Long CFL (36W)
- T5 Circline (22W)
- T9 Circline (20W-32W)
- U-Bend T8/T12 (32W-34W)
Emergency Light Output by Lamp Type
- T5 21W: 450 lumens
- T5HO 24W: 475 lumens
- T8 25W: 375 lumens
- T8 32W: 500 lumens
- T12 34W: 450 lumens
Applications
- Office buildings and retail spaces
- Warehouses and industrial facilities
- Emergency egress and exit lighting
- Indoor commercial emergency backup systems
Product Specifications
- Manufacturer: Keystone Technologies
- Model: KT-EMRG-500
- Order Code: KT-EMRG-500 /B-DP
- Lumen Output: 500 lumens
- Input Voltage: 120/277V
- Battery Type: 2.4V NiCD
- Emergency Runtime: 90 minutes
- Recharge Time: 24 hours
- Case Material: Painted Steel (White Finish)
- Dimensions: 9.50” L x 2.40” W x 1.50” H
- Mounting Options: Internal, top, or remote (max 50 ft.)
- Warranty: 5 Years

