Osram Optotronic 4DIMLT2 LED drivers for overvoltage protection

The Optotronic 4DIMLT2 product family of LED drivers from Osram offers overvoltage protection for street and urban lighting, industry or other outdoor applications in luminaires with IP>54. There are four different types with varying output power classes including 40, 60, 90 and 165 W.

The range provides high surge protection with up to 10 kV (1 pulse)/8 kV, in protection class I or II, and provides protection through double isolation between mains input and LED output. Four integrated dimming functions (4DIM) are also offered in one device (StepDIM, AstroDIM, MainsDIM, DALI).

The LED drivers have low luminous efficacy tolerance through low output current tolerance of ±3% and a current output range of up to 1050 mA. They have good flexibility due to a wide operating temperature range of -40 up to 60°C with overtemperature protection via external NTC.

The devices also allow energy saving in twilight phases, have constant lumen function and have a standby power consumption of <0.5 W.