Product Overview
Technical Summary
| Rated operational current at 40 °C | 356 A |
|---|---|
| Rated motor power at 400 V, standard circuit | 200 kW |
| Rated motor power at 400 V, inside-delta circuit | 355 kW |
| Rated operating voltage | 200 … 460 V |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main current circuit connection | Busbar connection |
| Auxiliary and control circuit connection | Screw-type terminals |
| Mounting | Screw fixing; vertical mounting surface +/-90° rotatable and +/-22.5° tiltable to the front and back |
| Front protection | IP00; IP20 with box terminal/cover |
| Product lifecycle | Start of final year of support |
| Successor | SIRIUS 3RW5; preferred successor type 3RW5546-6HA14 |
Key Features
356 A at 40 °C; 315 A at 50 °C and 280 A at 60 °C.
200 kW at 40 °C in a standard circuit; 355 kW at 40 °C in an inside-delta circuit.
Integrated bypass contact system, thyristors, adjustable current limitation, external reset, and inside-delta circuit.
Intrinsic device protection, motor overload protection, and evaluation of thermistor motor protection.
200 … 460 V rated operating voltage for standard and inside-delta circuits; 230 V AC control supply; busbar connection for the main current circuit and screw-type terminals for auxiliary and control circuits.
Frequently Asked Questions
What is the exact Siemens line item?
It is Siemens SIRIUS 3RW4446-6BC44, a soft starter.
What 400 V ratings should be retained in the quotation?
At 40 °C, the rated motor power is 200 kW in a standard circuit and 355 kW in an inside-delta circuit; rated operational current is 356 A.
How is the soft starter connected and mounted?
The main current circuit uses a busbar connection, auxiliary and control circuits use screw-type terminals, and mounting is by screw fixing.
What should I provide for a project quotation?
Provide the requested quantity, destination, schedule context, and any additional BOM line items.
