Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Product lifecycle | Active Product |
| Size of engine control device | S0 |
| At 40 °C rated current | 38 A |
| At 400 V, standard circuit rated value | 18.5 kW |
| Operating voltage at standard circuit | 200 … 480 V |
| Control supply voltage | 110 … 230 V |
| Type of voltage of the control supply voltage | AC/DC |
| Operating frequency | 50 … 60 Hz |
| Fastening method | screw and snap-on mounting |
| Type of electrical connection for main current circuit | screw-type terminals |
| Protection class IP on the front according to IEC 60529 | IP20 |
Applications
Soft starter function for controlled motor starting.
Protection function for motor overload protection in a motor circuit.
Adjustable current limitation for motor control during starting.
Key Features
Soft starter with product designation Soft starter and SIRIUS product brand name.
Size of engine control device: S0. Main current circuit and auxiliary/control circuit use screw-type terminals.
At 40 °C rated value: 38 A.
At 400 V, standard circuit rated value: 18.5 kW.
Product lifecycle: Active Product.
Frequently Asked Questions
What is Siemens 3RW4028-1BB14?
It is a SIRIUS soft starter in S0 size.
What is the rated current of 3RW4028-1BB14?
The rated current is 38 A at 40 °C.
What supply voltage does 3RW4028-1BB14 use?
The operating voltage at standard circuit is 200 … 480 V, and the control supply voltage is 110 … 230 V AC/DC.
How is 3RW4028-1BB14 connected and mounted?
It uses screw-type terminals for the main current circuit and screw and snap-on mounting.
