Product Overview
Technical Summary
| Product | Siemens SIRIUS 3RW4028-1BB04 soft starter |
|---|---|
| Rated operational current | 38 A at 40 °C |
| Rated motor power | 18.5 kW at 400 V, standard circuit at 40 °C |
| Operating voltage | 200 … 480 V |
| Control supply | 24 V AC/DC |
| Operating frequency | 50 … 60 Hz |
| Protection functions | Intrinsic device protection; motor overload protection; external reset; adjustable current limitation |
| Main connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection | IP20 |
| Lifecycle | Active Product |
Key Features
Rated operational current is 38 A at 40 °C; rated motor power is 18.5 kW at 400 V in a standard circuit at 40 °C.
Operating voltage is 200 … 480 V, with 50 … 60 Hz rated operating frequency. The control supply is AC/DC, 24 V.
The soft starter has intrinsic device protection, motor overload protection, external reset and adjustable current limitation.
Main, auxiliary and control circuits use screw-type terminals. Fastening is by screw and snap-on mounting; the device size is S0.
The device measures 45 mm wide, 125 mm high and 155 mm deep.
Front protection is IP20, and the product lifecycle is Active Product.
Frequently Asked Questions
What is the exact product and rated current?
It is the Siemens SIRIUS 3RW4028-1BB04 soft starter with 38 A rated operational current at 40 °C.
What operating voltage and control supply does it use?
Operating voltage is 200 … 480 V, and the control supply is 24 V AC/DC.
How is the soft starter connected and mounted?
It uses screw-type terminals for the main, auxiliary and control circuits, with screw and snap-on mounting.
