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 |
| insulation voltage rated value | 690 V |
| operational current at 40 °C rated value | 780 A |
| operational current for 3-phase motors at inside-delta circuit at 40 °C rated value | 1 351 A |
| at 400 V – at standard circuit at 40 °C rated value | 450 kW |
| at 400 V – at inside-delta circuit at 40 °C rated value | 800 kW |
| operating voltage at standard circuit rated value | 200 … 460 V |
| control supply voltage 1 at AC | 230 V |
| control supply voltage frequency 1 rated value | 50 Hz |
| control supply voltage frequency 2 rated value | 60 Hz |
| fastening method | screw fixing |
| type of electrical connection for main current circuit | busbar connection |
| type of electrical connection for auxiliary and control circuit | screw-type terminals |
| protection class IP on the front according to IEC 60529 | IP00 |
| product lifecycle | Start of final year of support |
Applications
Soft starting in an inside-delta circuit for a 3-phase motor.
Motor overload protection and external reset for a controlled motor circuit.
Key Features
Product designation: Soft starter.
Integrated bypass contact system: Yes.
Intrinsic device protection: Yes. Motor overload protection: Yes. Evaluation of thermistor motor protection: Yes.
Inside-delta circuit: Yes. Adjustable current limitation: Yes.
Control supply voltage: AC. Control supply voltage 1 at AC: 230 V at 50 Hz and 230 V at 60 Hz. Type of electrical connection for auxiliary and control circuit: screw-type terminals.
Phased-out product. Start of final year of support.
Frequently Asked Questions
What is Siemens 3RW4456-6BC44?
It is a SIRIUS soft starter.
What is the rated current of 3RW4456-6BC44 at 400 V and 40 °C?
780 A in standard circuit operation, and 1351 A in inside-delta circuit operation.
What control supply voltage does 3RW4456-6BC44 use?
The control supply voltage is AC 230 V at 50 Hz and 230 V at 60 Hz.
How is the 3RW4456-6BC44 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 Siemens 3RW4456-6BC44?
It is a phased-out product with Start of final year of support.
