Description
4W Emergency LED Driver | 90-Minute Backup | 120-277V Input | Small Case
The Keystone KT-EMRG-LED-4C-400-EN2 is a 4W constant wattage small LED emergency backup driver designed to provide 90 minutes of emergency lighting in case of power failure. Operating with a universal input voltage of 120-277V, this unit delivers a stable output voltage of 12-55V DC and is Class 2 compliant. The integrated high-temperature LiFePO4 battery ensures long-term reliability, while built-in overvoltage, overcurrent, and short circuit protections safeguard connected fixtures.
Features
- Wattage: 4W
- Input Voltage: 120–277V AC ±10%
- Output Voltage Range: 12V – 55V DC
- Output Current Range: 73 – 333mA
- Emergency Runtime: 90 minutes
- Battery Type: LiFePO4, maintenance-free, 6.4V DC
- Recharge Time: 24 hours
- Power Factor: >0.5 (120-277V input)
- Surge Protection: Over-voltage, over-current, and short-circuit protection
- Certifications: UL 924, FCC Compliant
- Lifespan: 50,000+ hours
- Warranty: 5-Year Limited Warranty
Benefits
- Ensures compliance with emergency lighting requirements (UL 924).
- Provides backup illumination for 90 minutes during power outages.
- Compatible with a wide range of LED fixtures using 12-55V output.
- Fast recharge time of 24 hours for minimal downtime.
- Advanced battery technology for extended reliability and performance.
Applications
- Commercial lighting – Emergency backup for office and retail spaces.
- Industrial lighting – Critical power support for warehouses and factories.
- Architectural lighting – Maintains illumination in exit and safety lighting.
- Healthcare and educational facilities – Ensures safe egress lighting compliance.
Product Specifications
- Max. Output Power: 4W
- Input Voltage: 120–277V AC ±10%
- Output Voltage Range: 12V – 55V DC
- Output Current Range: 73 – 333mA
- Emergency Runtime: 90 minutes
- Battery Type: LiFePO4, 6.4V DC
- Recharge Time: 24 hours
- Power Factor: >0.5
- Surge Protection: Built-in overvoltage, overcurrent, and short-circuit protection
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Lifespan: 50,000+ hours
- Certifications: UL 924, FCC Compliant
- Warranty: 5-Year Limited Warranty
- Dimensions: 5.31” L x 1.69” W x 1.17” H
- Case Material: Metal
Downloads
Disclaimers
Non-Returnable Item Notice:
Due to the sensitive electronic nature of LED drivers and the risk of improper installation, tampering, or programming, this item is non-returnable. Please confirm compatibility before purchasing. If your LED driver is defective upon arrival or during the warranty period, it may be eligible for a manufacturer warranty replacement. For assistance selecting the correct driver, please contact our support team.
