Key Features
- Soft starter: SIRIUS soft starter for controlled motor starting.
- Integrated bypass contact system: Includes an integrated bypass contact system and thyristors.
- Control and connection data: 200-460 V AC operating voltage, 230 V AC control supply, and screw terminals.
- Lifecycle status: Phased-out product. Successor is SIRIUS 3RW5, preferred successor type is 3RW5554-6HA14.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
| Adjustable current limitation | Yes |
| Operating current at 40 °C | 780 A |
| Operating current for 3-phase motors at inside-delta circuit at 40 °C | 1 351 A |
| 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 |
Applications
- Motor starting and protection: Soft starting with motor overload protection, thermistor motor protection evaluation, adjustable current limitation, and intrinsic device protection.
- Inside-delta circuit operation: Operation in an inside-delta circuit with supported current and power ratings for 3-phase motors.
Frequently Asked Questions
What is Siemens 3RW4456-6BC44?
It is a SIRIUS soft starter.
What are the key electrical ratings of 3RW4456-6BC44?
At 40 °C, the rated current is 780 A in standard circuit and 1 351 A in inside-delta circuit. Operating voltage is 200 … 460 V, and control supply voltage is 230 V AC.
What connection type does 3RW4456-6BC44 use for the main and control circuits?
The main current circuit uses busbar connection, and the auxiliary and control circuit uses screw-type terminals.
What is the lifecycle status of 3RW4456-6BC44?
It is a phased-out product. The successor is SIRIUS 3RW5, and the preferred successor type is 3RW5554-6HA14.
