eldoLED OPTOTRONIC® OT20W Dual Dim-1 LED Driver

The OPTOTRONIC OT20W Dual Dim-1 is a 20W compact programmable constant current LED driver that supports both 0–10V and phase-cut dimming. With an output range of 250–500mA, thermal protection, dim-to-off functionality, and flexible mounting options (F-Style or J-Style), it is designed for performance in tight architectural lighting spaces.

Key Features

• Programmable output current: 250–500mA (1mA steps)
• Max output power: 20W
• Output voltage: 26–42VDC
• Supports both 0–10V and phase-cut dimming (forward/reverse phase)
• Compact F-style and J-style housings available
• Dim-to-off with hysteresis at 0.6V (off) / 1V (on)
• NTC thermal protection foldback at 95°C
• IP20 Rated, FCC Class A & B, UL Class P Listed
• 50,000 hour life @ 80°C Tc with 5-year warranty

Electrical Specifications

• Input Voltage: 120–277VAC ±10%
• Frequency: 50–60Hz
• Input Current: 0.21A @ 120V, 0.09A @ 277V
• Power Factor: >0.9
• THD: <20%
• Efficiency: ≥84% @ 120V, ≥83% @ 277V
• Inrush Current: 5.2A @ 120V / 10.0A @ 277V
• Startup Time: <0.5 seconds
• Ripple Current: <30%
• Load Regulation: <3%

Mechanical Specifications

• F-Style Dimensions: 3.98″ L × 1.22″ W × 1.0″ H
• J-Style Dimensions: 3.56″ L × 1.31″ W × 1.0″ H
• Mounting Distance: Up to 16 feet
• Wire Leads: AWG18 for input/output, AWG22 for DIM/PRG
• Case Temperature (Tc): Max 90°C (Rated 80°C)
• Operating Temp: -30°C to +50°C
• Storage Temp: Max 75°C
• Humidity: Max 85%, non-condensing

Certifications & Compliance

• UL Class P Listed (E333135)
• FCC Part 15 Class A and B (120VAC)
• RoHS Compliant
• Dry and Damp Location Rated
• IP20 Environmental Rating
• ANSI C82.77 – 2.5kV Transient Protection
• Complies with NEMA 410 Inrush Requirements
• Sound Rating: Class A
• 5-Year Warranty at Tc ≤80°C