... Din rail switching power supply can provide protection short circuit, overload, overvoltage, univeral voltage input, multi-out 20W Single-rail Switching Power Supply, 20W Din rail power tranformer supply 20W Single group rail type power ... I/P:3 poles,O/P:3 poles screw Din terminalPacking --------------------------- 0.19Kg,72PCS/14.7Kg/0.91CUFT... 20W. din-rail switching power supply