The Siemens SIRIUS 3RA6250-1EP32 is a reversing compact starter rated for continuous operation per IEC 60947-6-2. It handles 32 A at 400 V AC-3 (motor duty) and delivers a 53 kA short-circuit breaking capacity at 400 V, meaning it can safely interrupt a fault up to that level without cascading upstream — critical for panel coordination studies. Trip class is adjustable between CLASS 10 and CLASS 20, giving the commissioning engineer flexibility to match motor start characteristics — CLASS 10 for shorter acceleration times (e.g., centrifugal pumps), CLASS 20 for high-inertia loads (fans, crushers). Screw-type terminals on the main current circuit accept 0.5... 4 mm² solid or 2x (0.5... 2.5 mm²) stranded — a common panel-wiring range that avoids the need for ferrule adapters on standard motor feeds.
Recommended orientation is vertical on a horizontal DIN rail, though any mounting position is permitted. Three status LEDs provide local indication of operating state — useful during commissioning or fault isolation without needing a handheld tool.
Vibration resistance covers 4 to 5.8 Hz at 15 mm amplitude and 5.8 to 500 Hz at 20 m/s² for 10 cycles; shock resistance is 60 m/s² (6g) for 10 ms across three shocks in all axes — suitable for machinery with moderate vibration profiles.