Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Rated operational current at 400 V, 40 °C | 780 A |
| Rated motor power at 400 V, standard circuit, 40 °C | 450 kW |
| Rated motor power at 400 V, inside-delta circuit, 40 °C | 800 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 |
| Fastening method | Screw fixing |
| Front protection class | IP00 |
| Product lifecycle | Start of final year of support |
Key Features
- Product designation: SIRIUS soft starter with integrated bypass contact system and thyristors.
- 400 V operational current: Rated operational current: 780 A at 40 °C, 693 A at 50 °C, and 615 A at 60 °C.
- 400 V motor power: Rated power: 450 kW in standard circuit and 800 kW in inside-delta circuit at 40 °C.
- Control supply: AC control supply: 230 V at 50 Hz and 230 V at 60 Hz, with -15 % to 10 % tolerance.
- Connections and mounting: Busbar connection for the main current circuit, screw-type terminals for auxiliary and control circuits, and screw fixing.
- Product lifecycle: Start of final year of support; the supplied preferred successor type is 3RW5554-6HA14.
Frequently Asked Questions
What product does Siemens 3RW4456-6BC44 identify?
It identifies a SIRIUS soft starter.
Which specifications distinguish this MLFB?
Key distinguishing facts are 780 A at 400 V and 40 °C in standard circuit, 450 kW in standard circuit, 800 kW in inside-delta circuit, and 230 V AC control supply.
What connection details should be checked?
Check the busbar connection for the main current circuit and screw-type terminals for auxiliary and control circuits.
What quantity and destination are needed for a quotation?
Provide the required quantity and delivery destination when requesting a quotation.
