Technical Summary
| Product designation | Soft starter |
|---|---|
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
| Evaluation of thermistor motor protection | Yes |
| Inside-delta circuit | Yes |
| Insulation voltage rated value | 690 V |
| Operational current at 40 °C | 356 A |
| Operational current for 3-phase motors at inside-delta circuit at 40 °C | 617 A |
| Operating voltage at standard circuit rated value | 200 … 460 V |
| Control supply voltage 1 at AC | 230 V |
Key Features
SIRIUS soft starter
Product designation: Soft starter in the Siemens SIRIUS range.
Product designation: Soft starter in the Siemens SIRIUS range.
Integrated bypass contact system
Includes an integrated bypass contact system and thyristors.
Includes an integrated bypass contact system and thyristors.
Motor protection functions
Supports intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, and external reset.
Supports intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, and external reset.
Inside-delta circuit support
Includes inside-delta circuit operation and product component motor brake output.
Includes inside-delta circuit operation and product component motor brake output.
230 V AC control supply
Control supply voltage is AC 230 V at 50 Hz and 60 Hz.
Control supply voltage is AC 230 V at 50 Hz and 60 Hz.
Phased-out product
Phased-out product; preferred successor type is 3RW5546-6HA14.
Phased-out product; preferred successor type is 3RW5546-6HA14.
Applications
Motor soft starting
Soft starting for a motor with standard circuit or inside-delta circuit operation.
Soft starting for a motor with standard circuit or inside-delta circuit operation.
Motor protection control
Motor protection with overload protection, thermistor motor protection evaluation, and external reset.
Motor protection with overload protection, thermistor motor protection evaluation, and external reset.
Frequently Asked Questions
What is Siemens 3RW4446-6BC44?
It is a SIRIUS soft starter.
What operating voltage range does 3RW4446-6BC44 support?
The operating voltage at standard circuit is 200 … 460 V, and the operating voltage at inside-delta circuit is 200 … 460 V.
What control supply voltage does 3RW4446-6BC44 use?
The control supply voltage is AC 230 V at 50 Hz and 60 Hz.
What are the current ratings for 3RW4446-6BC44?
Operational current is 356 A at 40 °C, and operational current for 3-phase motors at inside-delta circuit is 617 A at 40 °C.
What is the successor for 3RW4446-6BC44?
The preferred successor type is 3RW5546-6HA14.
