eldoLED OPTOTRONIC® OTi 25W 347V Compact Programmable LED Driver

The eldoLED OTi 25W 347V Compact LED Driver delivers reliable constant current output with advanced programmable dimming features, thermal protection, and up to 1250mA output current. Designed for 347V input systems, it supports 0–10V dimming, dim-to-off, and an optional auxiliary power output for sensors or controls. Perfect for architectural and commercial applications that require precision and performance.

Key Features

• Constant current programmable output: 150–1250mA (1mA steps)
• Default output: 500mA
• Max output power: 25W (24W LED + 1W AUX for AUX models)
• Output voltage range: 8–55V DC
• 0–10V isolated dimming (True 1% dimming with dim-to-off)
• NTC input for LED thermal protection and programmable derating
• Aux output available: 12/20/24V configurable (1W max)
• Over-voltage, short-circuit, overload, and thermal foldback protection
• Compliant with NEMA SSL 1-2010 (2.5kV), FCC Class A, IP20 rated

Electrical Specifications

• Input Voltage: 347V ±10%
• Frequency: 50–60Hz
• Input Current: 0.11A
• THD: <15%
• Power Factor: ≥0.9
• Efficiency: ≥86%
• Inrush Current: 13.3A peak
• Line Regulation: <5%

Dimming & Auxiliary Output

• 0–10V isolated dimming to 1% (dim-to-off at 0.7V)
• Soft start, dimming sync, and dimming protection up to 347V
• Standby power (dim-to-off): <1W
• Aux output (AUX models only): 12V / 20V / 24V (1W max)
• Voltage regulation: ±10%

Environmental & Mechanical

• Operating Temp: -40°C to +50°C
• Case Temp (Tc): Max 90°C (80°C for 5-year warranty)
• Storage Temp: 75°C
• Humidity: 85% RH, non-condensing
• Housing Options: F-style (4.3″ × 2.4″ × 1.2″) / J-style (4.2″ × 2.4″ × 1.2″)
• Mounting: F: 4.5″, J: 2.0″ mounting centers
• IP Rating: IP20 (indoor rated)

Certifications & Compliance

• UL Class P Listed (E333315)
• FCC Part 15 Class A EMI compliant
• RoHS Compliant
• Dry and Damp Location Rated
• NEMA SSL 1 – 2010 Transient Protection (2.5kV)
• Sound Rating: Class A
• 5-Year Warranty (at Tc ≤80°C)