Siemens SIRIUS 3RW4446-6BC34 Soft Starter - 315A, 250hp @ 460V

The Siemens 3RW4446-6BC34 is a powerful SIRIUS soft starter designed for robust motor control applications. Rated for 460V, it delivers a standard current of 315A, suitable for motors up to 250 hp. In inside-delta configuration, it can handle up to 546A for motors rated at 450 hp. It operates within a 200-460V AC range and features secure screw terminals.

This soft starter is engineered to reduce mechanical stress and electrical shock during motor start-up, significantly extending the life of motor components and driven equipment. It's commonly deployed in heavy-duty industrial settings such as large conveyor systems, pumps, crushers, and other high-inertia loads where smooth acceleration is critical.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RW4446-6BC34. While this is a phased-out model, we can assist you in acquiring this unit or its preferred successor, the 3RW5546-6HA14, to maintain your operational continuity.