Product Description
Key Features
- Rated current: 970 A at 40 °C in the standard circuit; 1 680 A at 40 °C for 3-phase motors in the inside-delta circuit.
- Power ratings: At 400 V and 40 °C: 560 kW in the standard circuit and 1 000 kW in the inside-delta circuit.
- Control and protection: Integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset and adjustable current limitation.
- Electrical connections: Busbar connection for the main current circuit and screw-type terminals for auxiliary and control circuits.
- Installation and protection: Screw fixing, IP00 protection class on the front according to IEC 60529, and vertical mounting surface with the stated rotation and tilt limits.
- Lifecycle data: The product is marked as phased out; product lifecycle status: Start of final year of support.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Rated current at 40 °C, standard circuit | 970 A |
| Rated current at 40 °C, inside-delta circuit | 1 680 A |
| Power at 400 V and 40 °C, standard circuit | 560 kW |
| Power at 400 V and 40 °C, inside-delta circuit | 1 000 kW |
| Operating voltage | 200 … 460 V |
| Control supply voltage | 230 V AC at 50 Hz and 60 Hz |
| Main current circuit connection | Busbar connection |
| Auxiliary and control circuit connection | Screw-type terminals |
| Front protection class | IP00 according to IEC 60529 |
| Product lifecycle | Start of final year of support |
Frequently Asked Questions
What exact product identity should be verified for this soft starter?
Verify Siemens SIRIUS soft starter 3RW4458-6BC44 and the installed configuration.
What current ratings should be checked?
Check 970 A at 40 °C in the standard circuit and 1 680 A at 40 °C for 3-phase motors in the inside-delta circuit.
What connections does the unit use?
The main current circuit uses a busbar connection; auxiliary and control circuits use screw-type terminals.
What mounting details should be confirmed?
Confirm screw fixing, the 510 mm x 640 mm x 290 mm dimensions, required clearances, and the stated vertical mounting rotation and tilt limits.
What lifecycle information is available for this configuration?
The product is marked as phased out, with lifecycle status listed as Start of final year of support.
