Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Lifecycle | Start of final year of support |
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
| Adjustable current limitation | Yes |
| Inside-delta circuit | Yes |
| Operational current at 40 °C | 57 A |
| At 400 V standard circuit at 40 °C | 30 kW |
| Control supply voltage 1 at AC | 230 V |
| Protection class IP on the front according to IEC 60529 | IP20 |
Applications
Motor starting using adjustable current limitation.
Inside-delta circuit operation for 3-phase motors.
Use of the product component motor brake output.
Key Features
Product designation: Soft starter.
Integrated bypass contact system: Yes.
Motor overload protection, evaluation of thermistor motor protection, and intrinsic device protection.
Adjustable current limitation and inside-delta circuit support.
Control supply voltage 1 at AC: 230 V at 50 Hz and 230 V at 60 Hz.
Spring-loaded terminals for the auxiliary and control circuit.
Frequently Asked Questions
What is Siemens 3RW4425-3BC44?
It is a SIRIUS soft starter.
What is the rated current and power for 3RW4425-3BC44 at 400 V?
At 400 V, the standard circuit is 30 kW and the inside-delta circuit is 55 kW. The operational current at 40 °C is 57 A standard and 99 A inside-delta.
What control supply does 3RW4425-3BC44 use?
The control supply voltage is AC, with 230 V at 50 Hz and 230 V at 60 Hz.
What terminals and connection type does 3RW4425-3BC44 have?
The auxiliary and control circuit uses spring-loaded terminals, and the main current circuit uses a box terminal.
