Product Description
Key Features
- Rated current and motor rating: Rated current: 38 A at 40 °C. Standard-circuit motor rating: 18.5 kW at 400 V and 22 kW at 500 V, both at 40 °C.
- Operating voltage and frequency: Rated operating voltage: 400 … 600 V at standard circuit, with -15 % relative negative tolerance and 10 % relative positive tolerance. Rated operating frequency: 50 … 60 Hz, with -10 % and 10 % relative tolerance.
- Control supply: Control supply voltage: 24 V AC/DC. AC rated values are 24 V at 50 Hz and 24 V at 60 Hz; DC rated value is 24 V.
- Protection and control functions: Has integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset, and adjustable current limitation. Evaluation of thermistor motor protection is No.
- Connections and mounting: Has screw-type terminals for the main current circuit and auxiliary and control circuit. Mounting: screw and snap-on mounting. Device size: S0.
- Physical and environmental data: Dimensions: 45 mm width, 125 mm height, and 155 mm depth. Front protection class: IP20. Ambient temperature during operation: -25 … +60 °C.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Product family | SIRIUS |
| Rated current at 40 °C | 38 A |
| Motor rating at 500 V and 40 °C | 22 kW |
| Rated operating voltage | 400 … 600 V |
| Rated operating frequency | 50 … 60 Hz |
| Control supply | 24 V AC/DC |
| Main and auxiliary/control connections | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection class | IP20 |
| Product lifecycle | Active Product |
Frequently Asked Questions
What is the rated current of Siemens 3RW4028-1BB05?
The rated current is 38 A at 40 °C; it is 34 A at 50 °C and 31 A at 60 °C.
What motor rating does the 3RW4028-1BB05 have?
The standard-circuit motor rating is 18.5 kW at 400 V and 22 kW at 500 V, both at 40 °C.
What control supply does this soft starter use?
The control supply is 24 V AC/DC. The AC rated value is 24 V at 50 Hz and 60 Hz, and the DC rated value is 24 V.
What terminals and mounting method does it have?
It has screw-type terminals for the main current circuit and auxiliary and control circuit, with screw and snap-on mounting.
