Plug-in expansion connector for 3RV19/3RV29 infeed
The Siemens 3RA6890-1AA is a SIRIUS expansion connector designed specifically for the 3RV19 and 3RV29 infeed systems. The 40 mm width and 100 mm depth keep the footprint tight against the DIN rail, leaving room for additional components in a crowded enclosure. Operating temperature spans -20 to +60 °C, with storage and transport tolerance down to -55 °C and up to +80 °C.
The 63 A rating at 400 V AC is the operational current the connector handles continuously through the infeed bus. For a motor starter lineup, this sets the ceiling for how many downstream starters can be fed before the bus needs splitting or a higher-rated infeed. Pollution degree 3 (industrial environment with conductive dust or condensation) is baked into the design, so the connector tolerates the grime inside a typical panel without creepage failures. Vibration resistance is specified at 2 m/s² from 5.8 to 500 Hz with 15 mm displacement at lower frequencies — ten cycles per axis. Shock resistance is semi-sinusoidal 6 m/s² at 10 ms in all three axes, positive and negative. These numbers matter for applications mounted on machinery or near conveyors where the panel sees continuous vibration. Installation altitude is limited to 2,000 m above sea level without derating. Above that, the air density drop reduces the dielectric withstand and cooling — typical for any industrial control gear, but worth flagging if the panel sits in a high-altitude plant.
Active production — sourcing posture
The 3RA6890-1AA carries an active lifecycle status from Siemens.