QLT Multicurrent LED power supply 250-700mA 42W max 84V 1-10V Push DALI Dimmable

The QLT A40PUL042BBB multicurrent LED driver is a dimmable constant-current LED power supply engineered for professional indoor lighting applications. Manufactured by QLT, this device stands out for the operational versatility provided by its integrated dip-switch, which allows precise selection of the constant output current across a range from 250 to 700 mA, making it compatible with LED light sources of varying power and configuration requirements, up to a maximum of 42W and an output voltage of up to 84V.

This DALI dimmable LED driver is the ideal solution for technical lighting installations requiring advanced dimming control. It supports three dimming protocols — 1-10V, Push and DALI — ensuring full compatibility with the most widely used lighting control systems. The unit operates on a universal input voltage of 100-240V AC, suitable for electrical standards in the EU, USA, Australia, UK and Japan. Output current is regulated to a tolerance of ±5%, including temperature variations, and the device retains dimming memory settings even when mains power is absent. Class II SELV insulation and an IP40 protection rating ensure safe and reliable indoor use, while self-restoring protections against overtemperature, short-circuit and open-circuit conditions guarantee long-term reliability. The compact dimensions of 68×103×30 mm allow easy installation even in confined spaces.