This product series is industrial PSUs with high efficiency and extremely low no-load power consumption. They contain a full metal shell design, in order to improve the load capacity of the device without a fan. In presence of natural air circulation, the whole series can work stably and reliably in a wide temperature environment. It has the overload protection function under constant current mode and is suitable for various inductive or capacitive load applications. Comprehensive protection functions and related certification of process control device makes it a competitive and robust industrial level PSU.