Product Description
Key Features
- Rated current: 203 A at 40 °C, 180 A at 50 °C, and 156 A at 60 °C.
- Inside-delta performance: 352 A at 40 °C, 312 A at 50 °C, and 270 A at 60 °C for 3-phase motors in inside-delta circuit.
- Motor power at 400 V: 110 kW at 40 °C in standard circuit and 200 kW at 40 °C in inside-delta circuit.
- Control supply: AC control supply with 230 V at 50 Hz and 230 V at 60 Hz.
- Control and protection functions: Has integrated bypass contact system, intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, and adjustable current limitation.
- Installation and protection: Screw fixing; vertical mounting surface, +/-90° rotatable and +/- 22.5° tiltable; IP00 on the front or IP20 with box terminal/cover.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Rated current at 40 °C | 203 A |
| Inside-delta rated current at 40 °C | 352 A |
| 400 V standard circuit | 110 kW at 40 °C |
| 400 V inside-delta circuit | 200 kW at 40 °C |
| Operating voltage | 200 … 460 V |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main current connection | busbar connection |
| Auxiliary and control connection | screw-type terminals |
| Mounting | screw fixing |
| Front protection | IP00; IP20 with box terminal/cover |
| Product lifecycle | Start of final year of support |
Frequently Asked Questions
What exact model should be verified for this soft starter?
Verify Siemens SIRIUS 3RW4443-6BC44 and the installed configuration before ordering.
What current is rated for the standard circuit?
The rated current is 203 A at 40 °C, 180 A at 50 °C, and 156 A at 60 °C.
What connections does the unit use?
The main current circuit uses a busbar connection; auxiliary and control circuits use screw-type terminals.
What mounting clearances are required?
With side-by-side mounting, required spacing is 100 mm upwards, 5 mm at the side, and 75 mm downwards.
What lifecycle information should be confirmed?
The supplied lifecycle data states: Start of final year of support. Confirm the required date and condition preference in the inquiry.
