The Siemens 3RK1908-1EA00-1BP0 is a mechanical mounting bracket designed specifically for the ET 200SP motor starter system. The part ships as a bag of 5 units, so one order code covers five mounting positions. The bracket measures 14 mm deep, 30 mm wide, and 26 mm high. That 14 mm depth is the critical dimension for panel layout: it tells you how much space this bracket consumes from the DIN rail face forward. In a dense ET 200SP string, every millimeter of depth matters for gland-plate clearance and door swing.
The bracket is pluggable onto a BaseUnit — no tools required for the mechanical attachment. It can be mounted in vertical, horizontal, or flat orientation, which gives flexibility in cabinet layouts where the ET 200SP string may need to run across or down the backplane. Pollution degree 2 means it is rated for normal industrial environments with only non-conductive pollution — typical for a clean, enclosed control panel. Vibration resistance is specified at 15 mm amplitude up to 6 Hz, then 2 g up to 500 Hz. Shock resistance is 6 g for 11 ms. These ratings match what you would expect for a bracket mounted inside a panel on a machine subject to normal industrial vibration — conveyor lines, pump skids, packaging machinery. It is not rated for extreme shock environments like stamping presses without additional damping.
The 3RK1908-1EA00-1BP0 carries an active lifecycle status. That means it remains in Siemens' current production program — no phase-out notice, no last-time-buy clock running. The bracket is a mechanical accessory, so there is no electronic or firmware revision to track. The substance prohibitance date of 04/15/2016 indicates RoHS compliance alignment to that cutoff — standard for EU-market industrial gear. No special compliance documentation beyond the standard Siemens declaration of conformity is needed for this part class.