Bearing the CE mark, indicating compliance with EMC directive 89/336/EEC for electromagnetic compatibility, DIN-rail mountable CM 125-PS-120-230AC/24DC/5 switching power supply is fully enclosed, has an integral LED status indicator, and incorporates screw-actuated terminal blocks for ease of wiring. The switcher employs a flexible design in the form of an autoranging input spanning 120 to 230 vac or 110 to 370 vdc, as well as an adjustable output range of 22.5 to 28.5 vdc. Also built into the unit is electronic overload and short-circuit protection with auto-reset, remote status indication to simplify system troubleshooting, and heavy filtering to prevent electrical noise problems from occurring.