Technical Summary
| Product brand name | SIRIUS |
|---|---|
| Product designation | Soft starter |
| Size | S0 |
| Rated current at 40 °C | 38 A |
| Power at 400 V | 18.5 kW |
| Operating voltage | 200 … 480 V |
| Control supply voltage | 24 V |
| Control supply voltage type | AC/DC |
| Operating frequency | 50 … 60 Hz |
| Front protection | IP20 |
| Mounting | screw and snap-on mounting |
Applications
Soft starter function for controlled motor starting.
Provides motor overload protection.
Supports adjustable current limitation.
Key Features
Soft starter for the SIRIUS family, size S0.
At 40 °C rated value.
At 400 V in a standard circuit at 40 °C rated value.
Type of voltage of the control supply voltage: AC/DC.
Screw-type terminals for the main current circuit and for the auxiliary and control circuit.
Supplied lifecycle status: Active Product.
Frequently Asked Questions
What is Siemens 3RW4028-1BB04 exactly?
It is a SIRIUS soft starter, product designation Soft starter, in size S0.
What are the main electrical ratings of 3RW4028-1BB04?
Rated current is 38 A at 40 °C, power is 18.5 kW at 400 V, and operating voltage is 200 … 480 V.
What control supply does 3RW4028-1BB04 use?
The control supply voltage is 24 V AC/DC.
How is 3RW4028-1BB04 connected and mounted?
It uses screw-type terminals for the main current circuit and for the auxiliary and control circuit, with screw and snap-on mounting.
