Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Size | S0 |
| Rated current at 40 °C | 38 A |
| Motor rating at 500 V | 22 kW |
| Operating voltage | 400 … 600 V |
| Control supply | 24 V AC/DC |
| Operating frequency | 50 … 60 Hz |
| Main current connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection | IP20 according to IEC 60529 |
| Operating temperature | -25 … +60 °C |
| Product lifecycle | Active Product |
Key Features
- Product designation: SIRIUS soft starter, size S0.
- Rated current: 38 A at 40 °C; 34 A at 50 °C and 31 A at 60 °C.
- Motor rating: 22 kW at 500 V in a standard circuit at 40 °C.
- Operating voltage: 400 … 600 V in a standard circuit at 500 V, with -15 % relative negative tolerance and 10 % relative positive tolerance.
- Control supply: 24 V AC/DC with 50 Hz and 60 Hz rated control supply frequency.
- Connection and mounting: Screw-type terminals with screw and snap-on mounting; front protection class IP20 according to IEC 60529.
Frequently Asked Questions
What product does Siemens 3RW4028-1BB05 identify?
It identifies a SIRIUS soft starter, size S0.
Which specifications distinguish this MLFB variant?
The variant has 38 A at 40 °C, 22 kW at 500 V, 24 V AC/DC control supply, 400 … 600 V operating voltage, and screw-type terminals.
What should be checked against the nameplate before inquiry?
Check the complete order number 3RW4028-1BB05, the 38 A rating at 40 °C, size S0, 24 V AC/DC control supply, and screw-type terminals.
What quantity and destination are needed for quotation?
Provide the required quantity and delivery destination for quotation.
