Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Size | S2 |
| Rated operational current at 40 °C | 72 A |
| Motor power at 500 V | 45 kW |
| Operating voltage at standard circuit | 400 … 600 V |
| Control supply voltage | 24 V AC/DC |
| Main current circuit connection | Screw-type terminals |
| Protection on front | IP20 |
| Mounting | Screw and snap-on mounting |
| Operating ambient temperature | -25 … +60 °C |
Key Features
- Product designation: SIRIUS soft starter, size S2.
- Rated operational current: 72 A at 40 °C; 62 A at 50 °C; 60 A at 60 °C.
- Motor power: 37 kW at 400 V and 45 kW at 500 V in the standard circuit at 40 °C.
- Operating voltage: 400 … 600 V at the standard circuit, with -15 % relative negative tolerance and 10 % relative positive tolerance.
- Control supply: 24 V AC/DC; AC control supply at 50 Hz and 60 Hz, with -20 % and 20 % relative tolerance.
- Connections and mounting: Screw-type terminals for the main, auxiliary, and control circuits; screw and snap-on mounting.
Frequently Asked Questions
What product does Siemens 3RW4038-1BB05 identify?
It identifies a SIRIUS S2 soft starter with a 72 A rated operational current at 40 °C.
Which specifications distinguish this 3RW4038-1BB05 variant?
Key matching details are 45 kW at 500 V, 400 … 600 V operating voltage, 24 V AC/DC control supply, and screw-type terminals.
What should be checked before requesting a quotation?
Check the complete order number 3RW4038-1BB05, the product nameplate details, required quantity, and destination.
