What ships in the carton
The Siemens 3RK1300-1GS01-1AA0 is a complete electromechanical reversing starter from the SIRIUS EM 300 RS family, designed for the ET 200X distributed I/O system. It ships as a single unit with the motor feeder and power connection integrated — no loose contactors or overload relays to assemble. The kit includes the 9-pole motor feeder and 9-pole power connection, so the panel builder gets a drop-in reversing solution, not a bag of parts.
Motor rating and setting range — what it means on the line
Rated at 2.2 kW at AC-3 duty class at 400 V, this starter is sized for a standard 3 kW (4 HP) induction motor running a reversing application — conveyor, hoist, gate, or similar forward-reverse cycle. The bimetal overload relay adjusts from 4.5 A to 6.3 A full-scale, matching the motor FLA within that window. The 2.2 kW figure is the maximum motor power at AC-3, not a resistive load rating; on resistive (AC-1) duty the current capacity is higher, but for motor switching the AC-3 number governs the selection.
Voltage, protection, and short-circuit coordination
Operating voltage is 400 to 500 V AC, three-phase — covers the common 400 V and 480 V industrial supplies. The short-circuit breaking capacity (Icu) at 400 V is 50 A, which means the integrated circuit-breaker-style protection safely interrupts a fault up to that level without upstream devices needing to clear it. That 50 A SCCR is the maximum the unit can withstand; verify the available fault current at the panel point of common coupling stays under this limit.
Fieldbus and enclosure
PROFIBUS DP onboard — no separate gateway or comm module required. The starter communicates directly on the PROFIBUS network, which is the standard fieldbus for Siemens ET 200X remote I/O drops. IP65 protection means the housing is dust-tight and protected against low-pressure water jets from any direction. This starter is designed for machine-mounted or conveyor-line deployment where washdown or airborne particulates are present, not for a sealed control cabinet. Ambient operating temperature range is 0 to 55 °C.
Dimensions and connections
Enclosure dimensions: 270 mm high, 140 mm wide, 134 mm deep. The main current circuit connects via tab terminals — no screw terminals on the power side. Verify your motor and supply cables are terminated with the correct tab receptacles (typically 6.3 mm or 9.5 mm blades depending on current rating) before the panel arrives on site.