Key Features
- SIRIUS soft starter: Product designation: Soft starter.
- 38 A rated current: Rated value at 40 °C: 38 A.
- 18.5 kW at 400 V: At 400 V, standard circuit rated value at 40 °C: 18.5 kW.
- 200-480 V AC operating voltage: Operating voltage at standard circuit rated value: 200 … 480 V.
- 110-230 V AC/DC control supply: Control supply voltage: 110 … 230 V AC at 50 Hz and 60 Hz, and 110 … 230 V DC.
- Screw-terminal connection: Main current circuit and auxiliary/control circuit use screw-type terminals.
Technical Summary
| product brand name | SIRIUS |
|---|---|
| product designation | Soft starter |
| size of engine control device | S0 |
| operational current at 40 °C rated value | 38 A |
| at 400 V – at standard circuit at 40 °C rated value | 18.5 kW |
| operating voltage at standard circuit rated value | 200 … 480 V |
| type of voltage of the control supply voltage | AC/DC |
| control supply voltage 1 at AC at 50 Hz | 110 … 230 V |
| control supply voltage 1 at AC at 60 Hz | 110 … 230 V |
| control supply voltage 1 at DC | 110 … 230 V |
| fastening method | screw and snap-on mounting |
| protection class IP on the front according to IEC 60529 | IP20 |
Applications
- Motor starting with reduced starting stress: Soft starting for a motor via a soft starter.
- Motor overload protection: Protection for a motor against overload conditions.
- External reset control: Reset function handled through external reset.
Frequently Asked Questions
What is Siemens 3RW4028-1BB14?
It is a SIRIUS soft starter in S0 size.
What are the rated current and power of 3RW4028-1BB14?
The rated current is 38 A at 40 °C, and the power is 18.5 kW at 400 V.
What control supply voltage does 3RW4028-1BB14 use?
The control supply voltage is 110 … 230 V AC at 50 Hz and 60 Hz, and 110 … 230 V DC.
How is 3RW4028-1BB14 connected?
The main current circuit and the auxiliary and control circuit use screw-type terminals.
What mounting and protection details are listed for 3RW4028-1BB14?
It has screw and snap-on mounting and a front protection class of IP20 according to IEC 60529.
