Siemens SIRIUS 3RW4455-2BC35 Soft Starter (Phased-out)
Siemens SIRIUS 3RW4455-2BC35 soft starter, phased-out.
The Siemens 3RW4455-2BC35 is a SIRIUS soft starter designed for controlling and protecting electric motors. This unit provides smooth acceleration and deceleration, reducing mechanical stress on machinery and electrical stress on the power supply. It offers standard values at 575 V, 50 °C of 615 A and 700 hp, with inside-delta values of 1065 A and 1200 hp. It operates on 400-600 V AC with 115 V AC spring-type terminals.
This soft starter is crucial for applications where controlled motor starts are necessary, such as pumps, fans, compressors, and conveyors, helping to prevent current surges and mechanical shock. It is widely used in industries like water treatment, manufacturing, and HVAC systems.
Please note that this is a phased-out product, with the preferred successor being the SIRIUS 3RW5553-2HA16. Stanlo Automation, a veteran-owned surplus distributor, may have this part available for those needing to maintain existing systems.
| Part Number | 3RW4455-2BC35 |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Type | Soft Starter |
| Voltage | 400-600 V AC |
| Standard Current (575V, 50C) | 615 A |
| Standard HP (575V, 50C) | 700 hp |
| Inside-Delta Current | 1065 A |
| Inside-Delta HP | 1200 hp |
| Terminals | Spring-type terminals (115 V AC) |