Product information
Overview
Key Features
- Rated current and power: Rated operational current: 38 A at 40 °C. Standard circuit power: 18.5 kW at 400 V and 22 kW at 500 V, both at 40 °C.
- Operating voltage and frequency: Operating voltage at standard circuit: 400 … 600 V, with -15 % relative negative tolerance and 10 % relative positive tolerance. Rated operating frequency: 50 … 60 Hz.
- Control supply: Control supply voltage: 110 … 230 V AC at 50 Hz or 60 Hz, and 110 … 230 V DC. Control supply voltage type: AC/DC.
- Protection and functions: Has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset and adjustable current limitation. Evaluation of thermistor motor protection, inside-delta circuit and motor brake output are not included.
- Installation and connections: S0 device with screw and snap-on mounting, 45 mm width, 125 mm height and 155 mm depth. Main, auxiliary and control circuits use screw-type terminals; the front has IP20 protection according to IEC 60529.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Rated operational current | 38 A at 40 °C |
| Standard circuit power | 18.5 kW at 400 V; 22 kW at 500 V, both at 40 °C |
| Operating voltage | 400 … 600 V at standard circuit |
| Operating frequency | 50 … 60 Hz |
| Control supply | 110 … 230 V AC/DC |
| Device size | S0 |
| Mounting | Screw and snap-on mounting |
| Connections | Screw-type terminals |
| Front protection | IP20 according to IEC 60529 |
| Operating ambient temperature | -25 … +60 °C |
Frequently Asked Questions
What is the rated current of Siemens 3RW4028-1BB15?
The rated operational current is 38 A at 40 °C, 34 A at 50 °C and 31 A at 60 °C.
What supply voltage does this soft starter use?
The operating voltage at standard circuit is 400 … 600 V. The control supply is 110 … 230 V AC at 50 Hz or 60 Hz, or 110 … 230 V DC.
How is the 3RW4028-1BB15 mounted and connected?
It uses screw and snap-on mounting. The main, auxiliary and control circuits use screw-type terminals.
Which protection functions are included?
It has intrinsic device protection, motor overload protection, external reset and adjustable current limitation. It does not include evaluation of thermistor motor protection.
What details should I provide for a quotation?
Provide the required quantity, destination and requested date so the exact Siemens model can be reviewed for quotation.
