Siemens SIRIUS 3RW4453-6BC34 Soft Starter - 494A (460V)
Siemens SIRIUS 3RW4453-6BC34 soft starter for motor control.
The Siemens SIRIUS soft starter, part number 3RW4453-6BC34, is designed for smooth motor starting. At 460 V and 50 °C, it handles a standard current of 494 A, suitable for a 400 hp motor. When configured for inside-delta connection, it can manage up to 856 A for a 750 hp motor. It operates on 200-460 V AC with a control voltage of 115 V AC and features screw terminals.
This soft starter is ideal for applications requiring reduced mechanical stress during motor startup, such as conveyor systems, pumps, fans, and compressors. It helps to minimize current inrush and extend the life of motor and connected equipment.
Stanlo Automation, a veteran-owned distributor, offers the Siemens 3RW4453-6BC34. As this is a phased-out product, we can provide this component for essential replacements. The preferred successor is SIRIUS 3RW5548-6HA14.
| Standard Current (460V) | 494 A |
| Standard Power (460V) | 400 hp |
| Inside-Delta Current | 856 A |
| Inside-Delta Power | 750 hp |
| Voltage | 200-460 V AC |
| Control Voltage | 115 V AC |
| Terminals | Screw |
| Manufacturer | Siemens |
| Series | SIRIUS 3RW44 |