Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Size | S0 |
| Rated current at 40 °C | 38 A |
| Motor power at 400 V | 18.5 kW |
| Operating voltage | 200 … 480 V |
| Operating frequency | 50 … 60 Hz |
| Control supply | 110 … 230 V AC/DC |
| Main circuit connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection | IP20 |
Key Features
- Product designation and size: SIRIUS soft starter, size S0.
- Rated current: 38 A at 40 °C; 34 A at 50 °C and 31 A at 60 °C.
- Motor power at 400 V: 18.5 kW at standard circuit and 40 °C rated value.
- Operating voltage: 200 … 480 V at standard circuit rated value.
- Control supply: AC/DC, 110 … 230 V at AC and 110 … 230 V at DC.
- Connections and mounting: Screw-type terminals for main, auxiliary, and control circuits; screw and snap-on mounting.
Frequently Asked Questions
What product does Siemens 3RW4028-1BB14 identify?
It identifies a SIRIUS S0 soft starter.
Which specifications distinguish the 3RW4028-1BB14 variant?
The listed variant has 38 A at 40 °C, 18.5 kW at 400 V, 200 … 480 V operating voltage, 110 … 230 V AC/DC control supply, and screw-type terminals.
What connection type does this configuration have?
It has screw-type terminals for the main current circuit and for the auxiliary and control circuits.
What details should be checked before quotation?
Check the complete 3RW4028-1BB14 order number, the required quantity, and the destination.
