Description
The Lutron H3DT521CU110 Hi-Lume 3D Fluorescent Dimming Ballast is a high-frequency electronic ballast designed for T5 linear fluorescent lamps. Operating on 120–277 VAC, it provides smooth, flicker-free continuous dimming from 100% to 1%, ensuring precise light control and energy efficiency in commercial and architectural lighting systems.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Lutron |
| Category |
Lighting Control |
| Part Number |
H3DT521CU110 |
| Subcategory |
Dimming Ballasts |
| Series |
Hi-Lume 3D |
| Ballast Type |
Electronic, High Frequency |
| Lamp Type |
T5 Linear |
| Lamp Wattage |
21 W |
| Number of Lamps Supported |
1 |
| Starting Type |
Programmed Rapid Start |
| Dimming Range |
100% to 1% Continuous |
| Dimming Type |
Proprietary Flicker-Free Continuous |
| Input Voltage |
120/240/277 VAC, 50/60 Hz |
| Input Current |
0.22 A (120V), 0.11 A (240V), 0.10 A (277V) |
| Input Power |
26.3 W @ 120/240V, 26.6 W @ 277V |
| Power Factor |
0.95 |
| Total Harmonic Distortion (THD) |
≤10% |
| Ballast Factor |
1.0 |
| Wiring Type |
Parallel |
| Operating Frequency |
42 kHz |
| Minimum Starting Temperature |
50°F (10°C) |
| Maximum Case Temperature |
75°C |
| Inrush Current |
7 A @ 120V / 3 A @ 277V |
| Sound Rating |
Class A |
| Dimensions (L × W × H) |
18 in × 1.18 in × 1 in |
| Approvals |
UL935, CSA, FCC Part 18, CEC, RoHS Compliant |
| Standards Compliance |
ANSI C82.11, ANSI C62.41, ANSI/ESD S20.20, ISO 9001 |
| Country of Origin |
Mexico |
| Application |
Commercial and architectural fluorescent dimming |
| Weight |
1.2 lb (approx.) |
Information About H3DT521CU110
The H3DT521CU110 belongs to the Hi-Lume 3D series of Lutron electronic dimming ballasts, engineered for superior light quality and efficiency. Featuring proprietary full-range dimming technology, it supports one F21T5 lamp with a programmed rapid start for extended lamp life. The ballast operates at a high frequency of 42 kHz to eliminate flicker and audible noise, maintaining a Class A sound rating and power factor of 0.95. With UL, CSA, and FCC approvals, it is ideal for high-performance indoor lighting requiring precise, smooth dimming control.
Key Features:
- Continuous Dimming: Provides full-range flicker-free dimming from 100% down to 1%.
- Programmed Rapid Start: Ensures optimal lamp life and reliable starting at low temperatures.
- High Efficiency: Operates with a 0.95 power factor and 10% maximum THD for stable performance.
- Wide Input Voltage: Accepts 120, 240, or 277 VAC for universal installation flexibility.
- High-Frequency Operation: Runs at 42 kHz to reduce flicker and noise.
- Thermally Protected: Class P ballast with a maximum case temperature of 75°C for safety.
- Compact Form Factor: 18" length for easy integration in fixture housings.
- Certified Performance: Meets ANSI, UL, CSA, CEC, FCC, and RoHS standards for quality and compliance.
The H3DT521CU110 delivers the reliability and precision required for professional-grade dimming control in architectural and commercial fluorescent lighting applications.
