Siemens SIRIUS 3RW4453-2BC44 Soft Starter - 315 kW
Siemens SIRIUS soft starter, 315 kW (400V), 551A standard, phased-out.
The Siemens SIRIUS 3RW4453-2BC44 is a soft starter designed for smooth acceleration of three-phase motors. At 400V and 40°C, it has a standard rating of 315 kW (551 A) and an inside-delta rating of 560 kW (954 A). It operates with a control voltage range of 200-460V AC and features spring-type terminals for the 230V AC control supply. Please note this is a phased-out product with a preferred successor, SIRIUS 3RW5548-2HA14.
This soft starter is essential for applications where high starting torques can cause mechanical stress or electrical surges, such as on pumps, fans, compressors, and conveyors. It helps reduce wear on machinery and minimizes power system disturbances during motor startup.
Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens SIRIUS 3RW4453-2BC44 soft starter. While it's a phased-out item, we provide access to critical components for maintaining existing systems. Contact us for availability and inquire about potential successor models.
| Rated Power (400V) | 315 kW (Standard), 560 kW (Inside-Delta) |
| Rated Current (400V) | 551 A (Standard), 954 A (Inside-Delta) |
| Control Voltage | 200-460 V AC |
| Control Supply | 230 V AC |
| Terminals | Spring-type |
| Status | Phased-out |