The 2866491 is a 1-phase DIN-rail mount primary switched Power Supply with basic functions. It is particularly suited for use in series production in mechanical engineering. The high MTBF of 500000-hour stands for high supply reliability. The device can be connected in parallel to increase the capacity and redundancy. The clear LED signalling and the device connection with double terminal block for plus and minus for fast potential distribution are further advantages of this device series. A third terminal block for minus simplifies the grounding on the secondary side. All power supply unit is idle proof and short-circuit proof and provide a regulated and adjustable output voltage.