These little power supplies are designed for a rugged industrial environment. They have a great physical size to power output ratio, and make a nice uncluttered bench power supply for troubleshooting circuit boards or powering freshly breadboarded designs. The DIN rail mounting and being fully enclosed, eliminates the hazard of accidental contact with live 120v or switcher signals with errant tools or fingers.
Good power supply. UL listed. My only critique is that the terminal blocks are on near the top and not near the bottom. Makes keeping the wiring harness within the cable troughs tricky.