Product Overview
Technical Summary
| Rated operational current at 40 °C | 38 A |
|---|---|
| Operating voltage at standard circuit | 200 … 480 V |
| Motor power at 400 V at 40 °C | 18.5 kW |
| Control supply voltage | 110 … 230 V AC/DC |
| Control supply voltage type | AC/DC |
| Motor overload protection | Yes |
| Adjustable current limitation | Yes |
| Main circuit connection | Screw-type terminals |
| Mounting method | Screw and snap-on mounting |
| Front protection class | IP20 |
Key Features
38 A at 40 °C; 34 A at 50 °C and 31 A at 60 °C.
11 kW at 230 V and 18.5 kW at 400 V in a standard circuit at 40 °C; operating voltage: 200 … 480 V.
Has intrinsic device protection, motor overload protection, external reset, and adjustable current limitation.
AC/DC control supply, 110 … 230 V at AC and 110 … 230 V at DC.
Screw-type terminals for the main, auxiliary, and control circuits; screw and snap-on mounting.
Size S0; 45 mm wide, 125 mm high, and 155 mm deep; front protection class IP20.
Frequently Asked Questions
What is the exact product identification?
It is the Siemens SIRIUS soft starter 3RW4028-1BB14, size S0.
What operating current and voltage does 3RW4028-1BB14 support?
The rated operational current is 38 A at 40 °C, and the operating voltage is 200 … 480 V in a standard circuit.
What control supply does it use?
The control supply is AC/DC, with 110 … 230 V available at AC and DC.
How is the soft starter mounted and connected?
It uses screw and snap-on mounting and screw-type terminals for the main, auxiliary, and control circuits.
