The Siemens 3RK1903-0BA00 is a PM-D power module for the ET 200S distributed I/O system, designed to supply 24 V DC control power to starters in the same motor starter configuration. It plugs onto a terminal module rather than mounting directly to a DIN rail, which means the physical footprint is set by the terminal module base — the module itself measures 15 mm wide, 95 mm deep, and 196.5 mm tall.
Supply voltage and environmental limits
Rated supply is 24 V DC, with a permissible range of 20.4 V to 28.8 V — the module will hold regulation across that band, which covers the typical sag and swell on a 24 V control bus. Shock resistance is rated at 5g for 11 ms, vibration at 2g — figures that align with typical industrial panel and conveyor line environments.
EMC and installation notes
EMC immunity meets IEC 60947-1 severity degree 3 for industrial sector (ambience A), and emitted interference complies with CISPR11 for the same environment — no additional filtering is needed for a standard industrial panel. Mounting position is flexible — vertical or horizontal — and the maximum installation altitude is 2 000 m above sea level, which covers most plant locations without derating.
Substance prohibitance date is 05/01/2012, indicating RoHS compliance per Siemens' declaration.