IP65 reversing motor starter with dual-fieldbus connectivity
The 3RK1304-5LS40-3AA3: This SIMATIC motor starter is a reversing starter — it handles forward and reverse motor direction control directly, without external contactor interlocking. The IP65 enclosure means it mounts directly on the machine frame in washdown zones, not inside a separate control panel. It supports both PROFINET and PROFIBUS DP protocols natively, so it drops into either fieldbus architecture without an additional gateway. The 4 digital inputs (M12 socket) and 2-byte input/output process data map directly into the controller's I/O image.
Rated for motor protection and fault interruption
The breaking capacity of 100,000 A at 400 V ensures it can interrupt high-fault-current events without upstream damage. Supply voltage range is 20.4 to 28.8 V DC (nominal 24 V DC), with the control logic powered from the same rail. Power dissipation is 3.888 W both with and without the bypass circuit engaged, so thermal management in the enclosure is consistent regardless of operating state.
Physical fit and environmental ratings
Dimensions are 150 mm deep, 110 mm wide, 230 mm high — this is a compact footprint for a reversing starter with integrated fieldbus. Rated IP65, with degree of pollution 3 (conductive pollution typical in industrial environments). Vibration resistance is 2g, shock resistance 15g for 11 ms — this holds up on moving machine axes or near press equipment.