Product Overview
Technical Summary
| Product designation | Soft starter |
|---|---|
| Rated current at 40 °C | 72 A |
| Motor rating at 500 V and 40 °C | 45 kW |
| Rated operating voltage | 400 … 600 V |
| Rated operating frequency | 50 … 60 Hz |
| Control supply | 24 V AC/DC |
| Integrated bypass contact system | Yes |
| Motor overload protection | Yes |
| Mounting method | screw and snap-on mounting |
| Front protection class | IP20 according to IEC 60529 |
Key Features
72 A at 40 °C; 62 A at 50 °C and 60 A at 60 °C.
45 kW at 500 V and 40 °C in a standard circuit; 37 kW at 400 V and 40 °C.
400 … 600 V rated value in a standard circuit at 500 V, with -15 % relative negative tolerance and 10 % relative positive tolerance.
AC/DC control supply with 24 V rated value at AC and DC.
Has intrinsic device protection, motor overload protection, external reset and adjustable current limitation. Evaluation of thermistor motor protection is No.
Has screw-type terminals for the main current, auxiliary and control circuits, with screw and snap-on mounting. Front protection class is IP20 according to IEC 60529.
Frequently Asked Questions
What is the exact product designation?
The exact product is Siemens SIRIUS 3RW4038-1BB05, designated as a Soft starter.
What rated current and motor rating does this configuration have?
The rated current is 72 A at 40 °C. The motor rating is 45 kW at 500 V and 40 °C in a standard circuit.
What control supply and terminals does it use?
The control supply is AC/DC at 24 V. Screw-type terminals are provided for the main current, auxiliary and control circuits.
What mounting and front protection details should be retained in a quotation?
Mounting is by screw and snap-on mounting, and the front protection class is IP20 according to IEC 60529. Include the requested quantity, destination, schedule context and any additional BOM lines in the inquiry.
