LDT150N is a Dimmable Electronic Transformer, designed to be used exclusively with 12V halogen lamps. Soft start protects filaments and prolongs lamp life. In case of short circuit and overload, the unit shall automatically reset when fault is removed. Preheat function: protects against current surge. Secondary side short circuit protection: short circuit protection. Detect overload design: over load protection. Dimmable with most standard dimmers.