OSRAM Optotronic OTi40W 120-277V 40W Dimmable LED Driver – Constant Current DIM-1

Overview

Discover the OSRAM OPTOTRONIC OTi40W/120-277V, a compact, programmable LED driver designed to power modest-to-midrange loads with reliable constant current. With 0–10 V dimming, universal input, and a programmable feature set, this driver helps you tailor performance to your LED array while maintaining smooth operation and energy efficiency.

Key capabilities at a glance

• Universal input voltage: 120–277 VAC, 50/60 Hz for flexible wiring and installation.
• Output: up to 40 W, 8–55 V DC, 400–1400 mA (1 mA steps), defaulting to 700 mA.
• UL Class 2 output for safe operation and compatibility with many luminaire designs.
• 0–10 V dimming with isolated dimming wires, enabling precise lumen control.
• Programmable with 1 mA resolution to closely match LED loads and optimize performance.
• Dim-to-off, soft start, and LED thermal protection to help maintain consistent lighting and longevity.
• Auxiliary output options (Vaux: 12/20/24 V) and end-of-life indication for simpler system management.
• Dry and Damp environment rating supports a variety of installation contexts.

Programmable features and what they mean for you

• 1 mA resolution allows fine-tuning of the drive current to better match your LED load.
• End-of-life indicator helps you plan maintenance without guessing when to service a luminaire.
• Soft start minimizes inrush, while thermal protection guards against overheating for steady operation.
• Dim-to-off provides flexible lighting scenes when paired with compatible 0–10 V dimmers.
• Vaux (12/20/24 V) options support auxiliary power needs in complex fixtures.

Reliability, safety, and installation

• UL Class 2 output ensures safe interaction with standard luminaire wiring schemes.
• NTC-based thermal protection (UL-listed) adds an extra layer of reliability in varying ambient conditions.
• Wide output range and programmable settings make it suitable for diverse LED configurations.
• Packaging supports mounting feet (F-style) or PEM studs (J-style) for ease of installation.

Where you’ll use it

• Downlights and in-grade fixtures for ceiling-centered illumination.
• Recessed troffers and wall-washing applications that require even, controllable brightness.
• Dry and damp environments, enabling use in a variety of indoor spaces.

Whether retrofitting existing fixtures or designing new luminaires, the OTi40W DIM-1 offers flexible control, stable current, and the ability to tune performance to your LED load. While results can vary with different LED arrays and dimmers, the programmable features provide a pathway to optimized lighting behavior and consistent output across operating conditions.