145 x 182 x 220 mm — panel fit and mounting
The 3RK4353-3MR58-0BA0: This SIRIUS direct starter measures 145 mm deep, 182 mm wide, and 220 mm high — the footprint fits a standard DIN-rail enclosure with enough side clearance for the 3-pole main circuit. IP55 rating means the housing is dust-protected and resists water jets — suitable for washdown areas in food processing or outdoor cabinets under eaves.
8 A AC-3, CLASS 10 — motor duty and overload protection
Operating voltage range is 340...440 V AC, covering nominal 400 V three-phase supplies with tolerance for brownout conditions.
Standalone control — no fieldbus, one digital input
This is a locally controlled starter: no PROFINET, PROFIBUS, AS-Interface, or other bus communication — the single digital input handles start/stop from a local pushbutton or PLC dry contact. The MCU-controlled on-site logic allows basic motor management without a network connection — set the parameters locally and it runs independently. Operating frequency is limited to 80 starts per hour — fine for conveyor or pump duty but not for high-cycling applications like rapid indexing.
Active production — sourcing and compliance
Short-circuit protection is designed for coordination with upstream circuit-breakers — the starter itself includes short-circuit protection as a built-in function.