Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Size | S0 |
| Rated current at 40 °C | 32 A |
| Operating voltage | 400 … 600 V |
| Rated power at 500 V | 18.5 kW |
| Operating frequency | 50 … 60 Hz |
| Control supply voltage | 24 V AC/DC |
| Main current circuit connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection | IP20 according to IEC 60529 |
Key Features
- Product designation: SIRIUS soft starter, S0 size.
- Rated current: 32 A at 40 °C; 29 A at 50 °C and 26 A at 60 °C.
- Power and operating voltage: 15 kW at 400 V and 18.5 kW at 500 V in the standard circuit at 40 °C; operating voltage is 400 … 600 V.
- Control supply: AC/DC control supply with 24 V AC at 50 Hz or 60 Hz and 24 V DC.
- Integrated functions: Integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset, and adjustable current limitation.
- Connection and mounting: Screw-type terminals for main, auxiliary, and control circuits; screw and snap-on mounting; IP20 protection on the front according to IEC 60529.
Frequently Asked Questions
What product does Siemens 3RW4027-1BB05 identify?
It identifies a SIRIUS S0 soft starter with a 32 A rated current at 40 °C.
Which specifications distinguish this 3RW4027-1BB05 variant?
The listed variant has 18.5 kW at 500 V, 400 … 600 V operating voltage, 24 V AC/DC control supply, screw-type terminals, and S0 size.
What should be checked against the nameplate before requesting a quotation?
Check the complete order number 3RW4027-1BB05, the SIRIUS designation, S0 size, 32 A rating, voltage and power values, control supply, and terminal type.
What information is needed for a quotation?
Provide the required quantity and destination together with the complete order number 3RW4027-1BB05.
