Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| 400 V standard circuit rated current at 40 °C | 970 A |
| 400 V inside-delta circuit rated current at 40 °C | 1 680 A |
| 400 V standard circuit power at 40 °C | 560 kW |
| 400 V inside-delta circuit power at 40 °C | 1 000 kW |
| Operating voltage | 200 … 460 V |
| Control supply | AC, 230 V at 50 Hz and 60 Hz |
| Mounting | Screw fixing |
| Main current connection | Busbar connection |
| Auxiliary and control connection | Screw-type terminals |
| Product lifecycle | Start of final year of support |
Key Features
- Product designation: SIRIUS soft starter with integrated bypass contact system and thyristors.
- 400 V standard circuit: Rated value: 970 A and 560 kW at 40 °C.
- 400 V inside-delta circuit: Rated value: 1 680 A and 1 000 kW at 40 °C.
- Operating voltage: 200 … 460 V for standard circuit and inside-delta circuit, with -15 % relative negative tolerance and 10 % relative positive tolerance.
- Control supply: AC, 230 V at 50 Hz and 60 Hz.
- Installation and connection: Screw fixing; busbar connection for the main current circuit and screw-type terminals for auxiliary and control circuits.
Frequently Asked Questions
What product does Siemens 3RW4458-6BC44 identify?
It identifies a SIRIUS soft starter.
Which specifications distinguish the 3RW4458-6BC44 variant?
At 400 V and 40 °C, the rated value is 970 A and 560 kW in standard circuit, or 1 680 A and 1 000 kW in inside-delta circuit.
What connection types should be checked for this code?
The main current circuit uses a busbar connection; auxiliary and control circuits use screw-type terminals.
What should be provided for a quotation request?
Provide the complete order number 3RW4458-6BC44, the required quantity, and the destination.
