Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Operational current at 40 °C | 432 A |
| Operational current for 3-phase motors at inside-delta circuit at 40 °C | 748 A |
| At 400 V – power at standard circuit at 40 °C | 250 kW |
| At 400 V – power at inside-delta circuit at 40 °C | 400 kW |
| Operating voltage at standard circuit | 200 … 460 V |
| Control supply voltage 1 at AC | 230 V |
| Protection class IP on the front according to IEC 60529 | IP00; IP20 with box terminal/cover |
Key Features
SIRIUS soft starter
Product designation: Soft starter.
Product designation: Soft starter.
Integrated bypass contact system
Built with an integrated bypass contact system and thyristors.
Built with an integrated bypass contact system and thyristors.
Motor protection functions
Includes intrinsic device protection, motor overload protection, and evaluation of thermistor motor protection.
Includes intrinsic device protection, motor overload protection, and evaluation of thermistor motor protection.
Inside-delta circuit operation
Supports inside-delta circuit operation and adjustable current limitation.
Supports inside-delta circuit operation and adjustable current limitation.
200 … 460 V AC operating voltage
Operating voltage at standard circuit: 200 … 460 V. Operating voltage at inside-delta circuit: 200 … 460 V.
Operating voltage at standard circuit: 200 … 460 V. Operating voltage at inside-delta circuit: 200 … 460 V.
230 V AC control supply
Type of voltage of the control supply voltage: AC. Control supply voltage 1 at AC: 230 V at 50 Hz and 230 V at 60 Hz.
Type of voltage of the control supply voltage: AC. Control supply voltage 1 at AC: 230 V at 50 Hz and 230 V at 60 Hz.
Applications
Soft starting for motor circuits
Soft starter for controlling motor start-up in a standard circuit or inside-delta circuit.
Soft starter for controlling motor start-up in a standard circuit or inside-delta circuit.
Motor overload protection
Provides motor overload protection and evaluation of thermistor motor protection.
Provides motor overload protection and evaluation of thermistor motor protection.
Frequently Asked Questions
What is Siemens 3RW4447-6BC44?
It is a SIRIUS soft starter.
What is the operating current of 3RW4447-6BC44?
The operational current at 40 °C is 432 A.
What control supply voltage does 3RW4447-6BC44 use?
The control supply voltage is AC 230 V at 50 Hz and 230 V at 60 Hz.
What is the enclosure protection on the front for 3RW4447-6BC44?
The front protection class is IP00; IP20 with box terminal/cover.
