What It Is and Where It Goes
The Siemens SIMATIC 3RK1301-0AB13-1AA4 is a reversing motor starter built for control cabinets on automated lines. It's a reversing starter — meaning it can run a motor forward and reverse without external contactors — and it plugs onto a terminal module for quick panel assembly. Rated for 24 V DC control supply (21.6 to 26.4 V DC, max 28.8 V), it handles the standard PLC voltage found in most SIMATIC S7 cabinets. The 50 kA rated short-circuit current at 400 V means this starter can sit downstream of a 50 kA bus without needing a current-limiting fuse upstream — that's the SCCR headroom a panel designer cares about for UL 508A compliance.
Integration and Mounting
Pluggable on a terminal module — no hardwiring to the starter body. The 130 mm width, 150 mm depth, and 290 mm height fit a standard 600 mm deep enclosure with room for cable ducts. Mount vertical or horizontal; the vibration resistance of 2g and shock resistance of 5g / 11 ms cover most conveyor and machine-tool environments. Two digital inputs are available via the control module for start/stop or interlock signals. The 2-byte input and 2-byte output process data maps directly to a PROFINET or PROFIBUS controller — no extra gateway. Brake control at 24 V DC is not built in; add an external brake chopper if the motor needs a holding brake.