Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
| Evaluation of thermistor motor protection | Yes |
| Adjustable current limitation | Yes |
| Inside-delta circuit | Yes |
| Insulation voltage rated value | 690 V |
| Operational current at 40 °C rated value | 313 A |
| Operational current for 3-phase motors at inside-delta circuit at 40 °C rated value | 542 A |
| Operating voltage at standard circuit rated value | 200 … 460 V |
Applications
Soft starting for a motor circuit with adjustable current limitation and inside-delta circuit operation.
Motor overload protection, thermistor motor protection evaluation, and intrinsic device protection.
Use of the product component motor brake output.
Key Features
Product designation: Soft starter; product brand name: SIRIUS.
Integrated bypass contact system: Yes.
Start of final year of support; phased-out product.
230 V AC control supply with 50 Hz and 60 Hz values.
Busbar connection for the main current circuit and screw-type terminals for the auxiliary and control circuit.
Width 210 mm, height 230 mm, depth 298 mm, fastening method: screw fixing.
Frequently Asked Questions
What is Siemens 3RW4445-6BC44?
It is a SIRIUS soft starter.
What is the control supply voltage for 3RW4445-6BC44?
The control supply voltage is AC 230 V at 50 Hz and 60 Hz.
What are the main current ratings for 3RW4445-6BC44?
At 40 °C, the standard circuit rated value is 313 A and the inside-delta circuit rated value is 542 A.
What type of connections does 3RW4445-6BC44 use?
The main current circuit uses a busbar connection, and the auxiliary and control circuit uses screw-type terminals.
