Key Features
- Soft starter: SIRIUS soft starter for motor starting and protection functions.
- Integrated protection and control functions: Includes integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, external reset, adjustable current limitation, inside-delta circuit, and product component motor brake output.
- Electrical ratings: Values at 400 V, 40 °C standard: 203 A, 110 kW. Inside-delta: 352 A, 200 kW.
- Operating and control supply: Operating voltage: 200 … 460 V AC. Control supply voltage: 230 V AC.
- Connections: Busbar connection for the main current circuit and screw-type terminals for the auxiliary and control circuit.
- Lifecycle status: Phased-out product. Successor is SIRIUS 3RW5, preferred successor type 3RW5543-6HA14.
Technical Summary
| product designation | Soft starter |
|---|---|
| product brand name | SIRIUS |
| operational current at 40 °C rated value | 203 A |
| operational current for 3-phase motors at inside-delta circuit at 40 °C rated value | 352 A |
| at 400 V – at standard circuit at 40 °C rated value | 110 kW |
| at 400 V – at inside-delta circuit at 40 °C rated value | 200 kW |
| operating voltage at standard circuit rated value | 200 … 460 V |
| type of voltage of the control supply voltage | AC |
| control supply voltage 1 at AC at 50 Hz rated value | 230 V |
| control supply voltage 1 at AC at 60 Hz rated value | 230 V |
| type of electrical connection for the main current circuit | busbar connection |
| type of electrical connection for the auxiliary and control circuit | screw-type terminals |
Applications
- Motor starting and protection: Soft starter function for controlled motor starting with overload and thermistor motor protection support.
- Inside-delta circuit operation: Inside-delta circuit use with specified current and power values for 3-phase motors.
Frequently Asked Questions
What is Siemens 3RW4443-6BC44?
It is a SIRIUS soft starter.
What are the main current ratings of 3RW4443-6BC44?
At 400 V and 40 °C, the standard circuit rating is 203 A and 110 kW. The inside-delta rating is 352 A and 200 kW.
What control supply voltage does 3RW4443-6BC44 use?
The control supply voltage is 230 V AC at 50 Hz and 60 Hz.
How is 3RW4443-6BC44 connected?
The main current circuit uses a busbar connection, and the auxiliary and control circuit uses screw-type terminals.
What lifecycle status is listed for 3RW4443-6BC44?
It is listed as a phased-out product, with preferred successor type 3RW5543-6HA14.
