Product Overview
Applications
Soft starting of 3-phase AC motors with adjustable current limitation and an inside-delta circuit.
Motor overload protection with evaluation of thermistor motor protection and external reset.
Motor braking through the integrated motor brake output.
Technical Summary
| Rated current at 40 °C, standard circuit | 880 A |
|---|---|
| Rated current at 40 °C, inside-delta circuit | 1 524 A |
| Motor power at 400 V, 40 °C, standard circuit | 500 kW |
| Motor power at 400 V, 40 °C, inside-delta circuit | 900 kW |
| Operating voltage, standard and inside-delta circuit | 200 … 460 V |
| Control supply | AC, 230 V at 50 Hz and 60 Hz |
| Main current connection | Busbar connection |
| Auxiliary and control connection | Screw-type terminals |
| Front protection class | IP00 |
| Lifecycle | Start of final year of support |
| Preferred successor type | >>3RW5556-6HA14<< |
Key Features
880 A at 40 °C in standard circuit; 1 524 A at 40 °C for 3-phase motors in inside-delta circuit.
500 kW at 40 °C in standard circuit and 900 kW at 40 °C in inside-delta circuit.
200 … 460 V rated operating voltage for standard circuit and inside-delta circuit.
AC control supply with 230 V rated voltage at 50 Hz and 60 Hz.
Busbar connection for the main current circuit, screw-type terminals for auxiliary and control circuits, and screw fixing.
Start of final year of support. Preferred successor type: >>3RW5556-6HA14<<.
Frequently Asked Questions
What is the exact Siemens line item?
The exact line item is Siemens SIRIUS 3RW4457-6BC44 soft starter.
What rated current does 3RW4457-6BC44 provide?
It provides 880 A at 40 °C in standard circuit and 1 524 A at 40 °C for 3-phase motors in inside-delta circuit.
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 uses screw fixing.
What is included in this configuration?
It is without a stated package or accessory list; the source identifies the line item and its technical data only.
