Product Overview
Technical Summary
| Product designation | Soft starter |
|---|---|
| Rated current at 40 °C, standard circuit | 880 A |
| Rated current at 40 °C, inside-delta circuit | 1 524 A |
| Rated power at 400 V, standard circuit | 500 kW |
| Rated power at 400 V, inside-delta circuit | 900 kW |
| Operating voltage | 200 … 460 V |
| Control supply voltage | 230 V AC at 50 Hz and 60 Hz |
| Main current connection | Busbar connection |
| Auxiliary and control connection | Screw-type terminals |
| Mounting | Screw fixing |
| Front protection class | IP00 |
| Lifecycle | Start of final year of support |
Key Features
- SIRIUS soft starter: Product brand name: SIRIUS; product designation: Soft starter.
- Rated current at 40 °C: Operational current rated value: 880 A at 40 °C in standard circuit; 1 524 A at 40 °C in inside-delta circuit.
- Motor power at 400 V: At 400 V and 40 °C, the rated value is 500 kW in standard circuit and 900 kW in inside-delta circuit.
- Control supply: Control supply voltage is AC, with a rated value of 230 V at 50 Hz and 60 Hz.
- Connection and mounting: The main current circuit uses a busbar connection; auxiliary and control circuits use screw-type terminals. Fastening is by screw fixing.
- Product status: Product lifecycle: Start of final year of support. The collected data identifies 3RW5 as the successor family and >>3RW5556-6HA14<< as the preferred successor type.
Frequently Asked Questions
What product does Siemens 3RW4457-6BC44 identify?
It identifies a SIRIUS Soft starter.
Which ratings distinguish this 3RW4457-6BC44 variant?
At 40 °C, the rated current is 880 A in standard circuit and 1 524 A in inside-delta circuit. At 400 V, the rated power is 500 kW in standard circuit and 900 kW in inside-delta circuit.
What connections should be checked for this code?
The main current circuit uses a busbar connection, while the auxiliary and control circuits use screw-type terminals.
What should be checked when requesting a quotation?
Check the complete code 3RW4457-6BC44 and provide the required quantity and destination.
