Product Description
Key Features
- Rated current and motor power: Rated current is 38 A at 40 °C; motor power is 18.5 kW at 400 V and 22 kW at 500 V in the standard circuit at 40 °C.
- Operating voltage and frequency: Operating voltage is 400 … 600 V with a -15 % relative negative tolerance and 10 % relative positive tolerance. Rated operating frequency is 50 … 60 Hz with -10 % and 10 % relative tolerances.
- Control supply: The control supply is AC/DC, 110 … 230 V at AC 50 Hz, AC 60 Hz, or DC. Relative tolerances are -15 % and 10 %.
- Protection and control functions: The soft starter has intrinsic device protection, motor overload protection, external reset, adjustable current limitation, an integrated bypass contact system, and thyristors. Thermistor motor protection evaluation and an inside-delta circuit are not included.
- Connections and contacts: Main, auxiliary, and control circuits use screw-type terminals. Auxiliary contacts have 0 NC, 2 NO, and 1 CO contacts.
- Mechanical installation and protection: Size is S0, with dimensions of 45 mm width, 125 mm height, and 155 mm depth. Fastening is by screw and snap-on mounting; front protection is IP20.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Rated current at 40 °C | 38 A |
| Motor power at 500 V, standard circuit, 40 °C | 22 kW |
| Operating voltage at standard circuit | 400 … 600 V |
| Control supply voltage | 110 … 230 V AC/DC |
| Control supply voltage frequency | 50 Hz; 60 Hz |
| Main current circuit connection | Screw-type terminals |
| Size | S0 |
| Fastening method | Screw and snap-on mounting |
| Front protection | IP20 |
| Product lifecycle | Active Product |
Frequently Asked Questions
What exact model should be confirmed for a Siemens 3RW soft starter request?
Confirm the complete order number Siemens 3RW4028-1BB15 and the SIRIUS S0 product designation.
What are the rated current and motor power of 3RW4028-1BB15?
Rated current is 38 A at 40 °C. Motor power is 18.5 kW at 400 V and 22 kW at 500 V in the standard circuit at 40 °C.
What control supply does this soft starter use?
The control supply is AC/DC, 110 … 230 V at AC 50 Hz, AC 60 Hz, or DC.
Which terminals and mounting method are supplied?
Main, auxiliary, and control circuits use screw-type terminals. Fastening is by screw and snap-on mounting.
Which configuration exclusions should be checked?
It is without thermistor motor protection evaluation, an inside-delta circuit, and a motor brake output.
