Osram 4058075024410 is a type of dimmable ballast for a fluorescent lamp. It is a high frequency, electronic constant wattage auto transformer (CWA) ballast. It is suitable for operation of one 18, 21, 24, 28 or 36 watt/825 to 865 mm T8 G13 fluorescent lamp. This ballast is suitable for use in luminaires that are compatible with the guarantees of protection against electric shock and fire, as specified in the relevant safety standard. The features of the ballast include an exemplary power factor of greater than 0.9, a long life of the lamp, low harmonic emission and energy savings.