Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Standard-circuit rated operational current at 40 °C | 551 A |
| Standard-circuit motor power at 400 V, 40 °C | 315 kW |
| Inside-delta rated operational current at 40 °C | 954 A |
| Inside-delta motor power at 400 V, 40 °C | 560 kW |
| 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 |
| Front protection class | IP00 |
Key Features
- Product designation: SIRIUS soft starter with integrated bypass contact system and thyristors.
- 400 V standard-circuit values: Rated operational current: 551 A at 40 °C. Rated motor power: 315 kW at 40 °C.
- Inside-delta values: Rated operational current: 954 A at 40 °C for 3-phase motors in inside-delta circuit. Rated motor power: 560 kW at 400 V, 40 °C in inside-delta circuit.
- Supply and voltage: Operating voltage: 200 … 460 V in standard and inside-delta circuits. Control supply: 230 V AC at 50 Hz and 60 Hz.
- Protection and functions: Has intrinsic device protection, motor overload protection, thermistor motor-protection evaluation, external reset, adjustable current limitation, and a motor brake output.
- Installation and connections: Screw fixing; busbar connection for the main current circuit and screw-type terminals for auxiliary and control circuits. Front protection class: IP00.
Applications
- Motor overload protection: Provides motor overload protection with adjustable motor current for the motor overload protection function.
Frequently Asked Questions
Which product does Siemens order number 3RW4453-6BC44 identify?
It identifies a SIRIUS soft starter.
Which specifications distinguish the 3RW4453-6BC44 variant?
Key values include 551 A and 315 kW at 400 V, 40 °C in standard circuit, plus 954 A and 560 kW at 40 °C in inside-delta circuit.
What code and nameplate details should be checked before inquiry?
Check the complete order number 3RW4453-6BC44, the 400 V values, the 200 … 460 V operating-voltage range, and the 230 V AC control supply.
What information is needed for a quotation?
Provide the required quantity and destination together with the complete order number.
