Product Description
Key Features
- Soft starter identity: SIRIUS soft starter with integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, and external reset.
- Rated operational current: Operational current is 780 A at 40 °C, 693 A at 50 °C, and 615 A at 60 °C.
- Inside-delta performance: Inside-delta circuit operational current is 1 351 A at 40 °C, 1 200 A at 50 °C, and 1 065 A at 60 °C.
- Voltage and control supply: Operating voltage is 200 … 460 V at standard and inside-delta circuits. Control supply is 230 V AC at 50 Hz and 60 Hz.
- Connections and mounting: The main current circuit uses busbar connection; auxiliary and control circuits use screw-type terminals. Mounting is by screw fixing.
- Lifecycle status: The collected product data identifies this as a phased-out product with the start of the final year of support.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Operational current at 40 °C | 780 A |
| Operational 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 | 230 V AC |
| Main current circuit connection | busbar connection |
| Auxiliary and control circuit connection | screw-type terminals |
| Mounting position | with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back |
| Protection class IP on the front according to IEC 60529 | IP00 |
| Product lifecycle | Start of final year of support |
Frequently Asked Questions
What is the exact product designation of Siemens 3RW4456-6BC44?
It is a SIRIUS soft starter.
What operational current does 3RW4456-6BC44 provide?
The rated operational current is 780 A at 40 °C, 693 A at 50 °C, and 615 A at 60 °C.
What connections does this soft starter use?
The main current circuit uses a busbar connection, while the auxiliary and control circuits use screw-type terminals.
What mounting details should be confirmed for this configuration?
It uses screw fixing and a vertical mounting surface; the surface is +/-90° rotatable and +/- 22.5° tiltable to the front and back.
What lifecycle information is supplied for 3RW4456-6BC44?
The product is identified as phased-out, with the start of the final year of support.
