Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Rated operational current at 40 °C | 693 A |
| Inside-delta operational current at 40 °C | 1 200 A |
| Operating voltage | 200 … 460 V |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main current connection | Busbar connection |
| Auxiliary and control connection | Screw-type terminals |
| Mounting | Screw fixing; vertical mounting surface +/-90° rotatable and +/-22.5° tiltable |
| Front protection class | IP00 |
| Product lifecycle | Start of final year of support |
| Successor | SIRIUS 3RW5; preferred successor type: 3RW5553-6HA14 |
Key Features
- Product designation: SIRIUS soft starter with integrated bypass contact system and thyristors.
- Rated operational current: 693 A at 40 °C, 615 A at 50 °C, and 551 A at 60 °C.
- Inside-delta operational current: 1 200 A at 40 °C, 1 065 A at 50 °C, and 954 A at 60 °C for 3-phase motors in inside-delta circuit.
- Voltage and power: Operating voltage: 200 … 460 V in standard and inside-delta circuits. At 400 V and 40 °C: 400 kW in standard circuit and 710 kW in inside-delta circuit.
- Connections and mounting: Busbar connection for the main current circuit, screw-type terminals for auxiliary and control circuits, and screw fixing. Dimensions: 510 mm width, 640 mm height, 290 mm depth.
Frequently Asked Questions
What does Siemens order number 3RW4455-6BC44 identify?
It identifies a Siemens SIRIUS soft starter.
Which specifications distinguish the 3RW4455-6BC44 configuration?
The configuration has 693 A at 400 V and 40 °C in standard circuit, 1 200 A in inside-delta circuit, 200 … 460 V operating voltage, and 230 V AC control supply.
What connection details should be checked for this order number?
Check the busbar connection for the main current circuit, screw-type terminals for auxiliary and control circuits, and the 510 mm x 640 mm x 290 mm dimensions.
What information is needed for a quotation?
Confirm the complete order number, required quantity, and destination.
