Product Overview
Technical Summary
| Product designation | SIRIUS S3 soft starter |
|---|---|
| Rated current at 40 °C | 106 A |
| Power at 500 V | 75 kW, standard circuit at 40 °C |
| Operating voltage | 400 … 600 V |
| Control supply | 24 V AC/DC |
| Operating frequency | 50 … 60 Hz |
| Main circuit connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection | IP20 according to IEC 60529 |
| Operating ambient temperature | -25 … +60 °C |
Key Features
- Product designation: SIRIUS S3 soft starter with product brand name SIRIUS.
- Rated current: 106 A at 40 °C; 98 A at 50 °C and 90 A at 60 °C.
- Power and operating voltage: 75 kW at 500 V in a standard circuit at 40 °C; operating voltage rated value 400 … 600 V.
- Control supply: AC/DC control supply with a rated value of 24 V at AC 50 Hz, AC 60 Hz, and DC.
- Integrated functions: Integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset, and adjustable current limitation.
- Connections and mounting: Screw-type terminals for main, auxiliary, and control circuits; screw and snap-on mounting; S3 device size.
Frequently Asked Questions
What product does Siemens 3RW4047-1BB05 identify?
It identifies a SIRIUS S3 soft starter.
Which specifications distinguish this MLFB variant?
The variant has 106 A rated current at 40 °C, 75 kW at 500 V, 400 … 600 V operating voltage, 24 V AC/DC control supply, and screw-type terminals.
What should be checked against the nameplate before inquiry?
Check the complete order number 3RW4047-1BB05, the SIRIUS S3 designation, rated current, voltage, control supply, and terminal type.
What information is needed for a quotation?
Provide the required quantity and destination together with the complete order number 3RW4047-1BB05.
