Product information
Overview
Key Features
- Rated operational current: 780 A at 40 °C; 693 A at 50 °C; 615 A at 60 °C.
- Motor power at 400 V: 450 kW in standard circuit and 800 kW in inside-delta circuit, both at 40 °C rated value.
- Operating voltage: 200 … 460 V rated value in both standard and inside-delta circuits, with -15 % relative negative tolerance and 10 % relative positive tolerance.
- Control supply: AC control supply with 230 V at 50 Hz and 60 Hz, and screw-type terminals for auxiliary and control circuits.
- Integrated functions: Has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, adjustable current limitation, and external reset.
- Installation and protection: Screw fixing, IP00 protection class on the front according to IEC 60529, and vertical mounting surface with +/-90° rotation or +/-22.5° front and back tilt.
Technical Summary
| Product type | Soft starter |
|---|---|
| Rated operational current at 40 °C | 780 A |
| Rated motor power at 400 V, standard circuit | 450 kW |
| Rated motor power at 400 V, inside-delta circuit | 800 kW |
| Operating voltage | 200 … 460 V |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main circuit connection | Busbar connection |
| Auxiliary and control circuit connection | Screw-type terminals |
| Front protection | IP00 according to IEC 60529 |
| Product lifecycle | Start of final year of support |
Frequently Asked Questions
What are the 400 V ratings of Siemens 3RW4456-6BC44?
At 40 °C, the rated value is 780 A, with 450 kW in the standard circuit and 800 kW in the inside-delta circuit.
What control supply and connections does this soft starter have?
The control supply is 230 V AC at 50 Hz or 60 Hz. The main circuit uses a busbar connection, while auxiliary and control circuits use screw-type terminals.
How is the 3RW4456-6BC44 mounted and protected?
It uses screw fixing and has IP00 protection on the front according to IEC 60529. The mounting position requires a vertical mounting surface and allows +/-90° rotation or +/-22.5° front and back tilt.
Is the 3RW4456-6BC44 a current product?
It is a phased-out product and is at the start of its final year of support. The preferred successor type is 3RW5554-6HA14.
What should I include in a quotation request?
Include the required quantity, destination, requested date, and any project list or technical verification requirements.
