Technical Summary
| 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 | 93 A |
| Operational current for 3-phase motors at inside-delta circuit at 40 °C | 161 A |
| Standard circuit power at 400 V and 40 °C | 45 kW |
| Inside-delta circuit power at 400 V and 40 °C | 90 kW |
| Operating voltage at standard circuit | 200 … 460 V |
Key Features
Soft starter
Product designation: Soft starter.
Product designation: Soft starter.
Integrated bypass contact system
Integrated bypass contact system: Yes.
Integrated bypass contact system: Yes.
Thyristors
Thyristors: Yes.
Thyristors: Yes.
Inside-delta circuit
Inside-delta circuit: Yes.
Inside-delta circuit: Yes.
Spring-loaded control terminals
Type of electrical connection for auxiliary and control circuit: spring-loaded terminals.
Type of electrical connection for auxiliary and control circuit: spring-loaded terminals.
Applications
Inside-delta motor starting
Starting a motor in an inside-delta circuit.
Starting a motor in an inside-delta circuit.
Motor protection control
Motor overload protection and thermistor motor protection evaluation.
Motor overload protection and thermistor motor protection evaluation.
Frequently Asked Questions
What is Siemens 3RW4427-3BC44?
It is a SIRIUS soft starter.
What are the current and power ratings of 3RW4427-3BC44?
At 40 °C, it is rated at 93 A and 45 kW in the standard circuit, and 161 A and 90 kW in the inside-delta circuit.
What supply voltage does 3RW4427-3BC44 use?
The operating voltage at standard circuit is 200 … 460 V, and the control supply voltage is 230 V AC.
What connection type does 3RW4427-3BC44 use for the control circuit?
The type of electrical connection for the auxiliary and control circuit is spring-loaded terminals.
