Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Rated operational current at 40 °C | 615 A |
| 400 V capacity, standard circuit at 40 °C | 355 kW |
| 400 V capacity, inside-delta circuit at 40 °C | 630 kW |
| Operating voltage | 200 … 460 V |
| Control supply | AC, 230 V at 50 Hz and 60 Hz |
| Main current connection | Busbar connection |
| Auxiliary and control connection | Screw-type terminals |
| Mounting | Screw fixing |
| Front protection | IP00 according to IEC 60529 |
| Product lifecycle | Start of final year of support |
Key Features
- Product designation: SIRIUS soft starter with integrated bypass contact system and thyristors.
- Rated operational current: 615 A at 40 °C, 551 A at 50 °C, and 489 A at 60 °C.
- 400 V motor capacity: 355 kW in the standard circuit and 630 kW in the inside-delta circuit at 40 °C.
- Operating voltage: 200 … 460 V in the standard circuit and 200 … 460 V in the inside-delta circuit.
- Control supply: AC, 230 V at 50 Hz and 230 V at 60 Hz.
- Mechanical and protection details: 510 mm wide, 640 mm high, 290 mm deep; screw fixing; IP00 on the front according to IEC 60529.
Frequently Asked Questions
What does Siemens order number 3RW4454-6BC44 identify?
It identifies a SIRIUS soft starter with an integrated bypass contact system, thyristors, intrinsic device protection, and motor overload protection.
Which specifications should be checked to verify the 3RW4454-6BC44 variant?
Check 615 A at 40 °C, 355 kW at 400 V in the standard circuit, 630 kW at 400 V in the inside-delta circuit, 200 … 460 V operating voltage, and 230 V AC control supply.
How is the 3RW4454-6BC44 connected and mounted?
The main current circuit uses a busbar connection, auxiliary and control circuits use screw-type terminals, and mounting uses screw fixing.
What is the lifecycle status of 3RW4454-6BC44?
It is at the start of the final year of support. The successor is SIRIUS 3RW5, with preferred successor type 3RW5552-6HA14.
