Key Features
- Soft starter designation: SIRIUS soft starter.
- Integrated starting and protection functions: 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: At 400 V, 40 °C standard: 29 A, 15 kW. Inside-delta: 50 A, 22 kW. Operating voltage at standard circuit: 200 … 460 V.
- 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.
- Connections and installation: Main current circuit: box terminal. Auxiliary and control circuit: spring-loaded terminals. Fastening method: screw fixing.
- Lifecycle status: Phased-out product. Successor is SIRIUS 3RW5, preferred successor type 3RW5516-3HA14.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Brand | SIRIUS |
| Integrated bypass contact system | Yes |
| Motor overload protection | Yes |
| Insulation voltage rated value | 690 V |
| Operational current at 40 °C | 29 A |
| Operational current for 3-phase motors at inside-delta circuit at 40 °C | 50 A |
| At 400 V – at standard circuit at 40 °C rated value | 15 kW |
| At 400 V – at inside-delta circuit at 40 °C rated value | 22 kW |
| Operating voltage at standard circuit rated value | 200 … 460 V |
| Control supply voltage 1 at AC | 230 V |
| Protection class IP on the front according to IEC 60529 | IP20 |
Applications
- Motor starting and protection: Soft starter for controlled motor starting with motor overload protection and intrinsic device protection.
- Inside-delta motor starting: Inside-delta circuit operation for 3-phase motors.
- Motor brake output control: Motor brake output function for the product component motor brake output.
Frequently Asked Questions
What is Siemens 3RW4422-3BC44?
It is a SIRIUS soft starter.
What are the current and power ratings for 3RW4422-3BC44 at 400 V and 40 °C?
At 400 V and 40 °C, the standard circuit is 29 A, 15 kW, and the inside-delta circuit is 50 A, 22 kW.
What control supply does 3RW4422-3BC44 use?
The control supply is AC, with 230 V at 50 Hz and 230 V at 60 Hz.
What type of terminals does 3RW4422-3BC44 have?
The main current circuit uses box terminal connections, and the auxiliary and control circuit uses spring-loaded terminals.
Is 3RW4422-3BC44 an active product?
It is listed as a phased-out product. The preferred successor type is 3RW5516-3HA14.
