Technical Summary
| Product brand name | SIRIUS |
|---|---|
| Product designation | Soft starter |
| 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 |
| Operational current at 40 °C | 250 A |
| Operational current for 3-phase motors at inside-delta circuit at 40 °C | 433 A |
| Operating voltage at standard circuit | 200 … 460 V |
| Control supply voltage 1 at AC | 230 V |
Key Features
SIRIUS soft starter
Product designation: Soft starter in the SIRIUS range.
Product designation: Soft starter in the 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
Provides intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, external reset, and adjustable current limitation.
Provides intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, external reset, and adjustable current limitation.
Inside-delta circuit
Supports inside-delta circuit operation.
Supports inside-delta circuit operation.
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.
Screw-type terminals
Auxiliary and control circuit connection uses screw-type terminals.
Auxiliary and control circuit connection uses screw-type terminals.
Applications
Motor starting and control
Soft starter for controlled starting of a motor.
Soft starter for controlled starting of a motor.
Inside-delta motor connection
Supports inside-delta circuit operation for 3-phase motors.
Supports inside-delta circuit operation for 3-phase motors.
Motor protection
Provides motor overload protection, thermistor motor protection evaluation, and intrinsic device protection.
Provides motor overload protection, thermistor motor protection evaluation, and intrinsic device protection.
Frequently Asked Questions
What is Siemens 3RW4444-6BC44?
It is a SIRIUS soft starter.
What is the rated current of 3RW4444-6BC44 at 40 °C?
250 A.
What is the operating voltage range for the standard circuit?
200 … 460 V.
What control supply voltage does 3RW4444-6BC44 use?
AC 230 V at 50 Hz and 60 Hz.
What connection type is used for the auxiliary and control circuit?
Screw-type terminals.
