Product Overview
Technical Summary
| Product designation | Soft starter |
|---|---|
| Product family | SIRIUS S2 |
| Rated operational current at 40 °C | 72 A |
| Motor rating at 500 V, standard circuit, 40 °C | 45 kW |
| Operating voltage at standard circuit | 400 … 600 V |
| Control supply | 110 … 230 V AC/DC |
| Operating frequency | 50 … 60 Hz |
| Main current circuit poles | 3 |
| Mounting | Screw and snap-on mounting |
| Terminal type | Screw-type terminals |
| Front protection | IP20 |
Key Features
- SIRIUS S2 soft starter: Product designation: Soft starter. Size of engine control device: S2.
- Rated current and motor rating: Rated operational current: 72 A at 40 °C. Standard-circuit rating: 45 kW at 500 V and 37 kW at 400 V, both at 40 °C.
- Operating and control supply: Operating voltage: 400 … 600 V at standard circuit. Control supply: 110 … 230 V AC or DC.
- Integrated functions: Has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset, and adjustable current limitation.
- Mounting and connections: Screw and snap-on mounting. Main, auxiliary, and control circuits use screw-type terminals.
- Protection and dimensions: Front protection class: IP20. Device dimensions: 55 mm wide, 160 mm high, and 170 mm deep.
Frequently Asked Questions
What product does Siemens 3RW4038-1BB15 identify?
It identifies a SIRIUS S2 soft starter.
Which specifications distinguish this configuration?
The configuration has 72 A rated operational current at 40 °C, 45 kW at 500 V in a standard circuit, 400 … 600 V operating voltage, and 110 … 230 V AC/DC control supply.
What connections and mounting does it have?
It has screw-type terminals for the main, auxiliary, and control circuits, with screw and snap-on mounting.
Which functions are not included in this configuration?
It is without thermistor motor protection evaluation, inside-delta circuit, and motor brake output.
