Description
Programmable LED Driver | 12W Output | 120–277V Input | Dimmable | 0–10V, Reverse & Forward Phase
Keystone KTLD-12-UV-P400-40-CDIM-MC4 is a 12-watt programmable constant current LED driver delivering 100–400mA output, supporting 0–10V, reverse, and forward phase dimming, and operates from a universal 120–277V AC input. With high efficiency up to 84%, advanced protection features, flicker-free operation, and a compact, metal micro case, it’s ideal for commercial, retrofit, or custom indoor LED lighting applications.
Product Specifications
- Model: Keystone KTLD-12-UV-P400-40-CDIM-MC4
- Current Type: Programmable Constant Current
- Wattage: 12W
- Output Current: 100–400mA (programmable in 1mA increments)
- Output Voltage: 10–40V DC
- Input Voltage: 120–277V AC ±10%
- Dimming: 0–10V, Reverse & Forward Phase (Triac/ELV)
- Minimum Dimming Level: 1–10% (programmable, 0.5% steps)
- Power Factor: >0.9 at 30–100% load (120V), >0.9 at 60–100% load (277V)
- Efficiency: Up to 84% (120V), 83% (277V)
- Dimensions: 3.39" x 1.08" x 0.76"
- Case: Metal micro case, UL Damp Rated
- Warranty: 10 Years Limited
- Certifications: UL 8750, cUL, CE, FCC, Class P, Class 2 (US/Canada), ANSI C137.1, JA8 & IEE1789 Flicker Free
- Protection: Over-voltage, over-current, short-circuit, over-temperature (auto-recovery)
- Rated Life: >200,000 hours (25°C), >50,000 hours at 80°C case temp
- Surge Protection: 2.5kV ring wave, 2kV combo wave
- Remote Mounting: Up to 24 ft (18AWG wire)
- Operating Temp: -25°C to 50°C
- MTBF: >200,000 hours
Benefits
- Wide 100–400mA programmable output range for flexibility
- Smooth, flicker-free dimming with multiple protocols (0–10V, phase-cut)
- High efficiency for lower energy costs
- Robust protection circuitry ensures long-term reliability
- 10-year limited warranty for peace of mind
- Slim micro case for tight installations
Applications
- LED troffers and panels
- Linear and strip lighting
- Downlights and retrofit kits
- Custom and commercial indoor LED fixtures
Downloads
Disclaimers
*This product is shipped directly from the manufacturer and orders typically ships in 2 to 3 business days. Larger quantities may take longer than stated lead-time. All lead-times are estimates and you will be notified by email if it will take longer than 5 business days to ship.

