Product Overview
Technical Summary
| Product designation | SIRIUS soft starter |
|---|---|
| Rated current at 40 °C, standard circuit | 203 A |
| Rated current at 40 °C, inside-delta circuit | 352 A |
| Motor power at 400 V, standard circuit | 110 kW |
| Motor power at 400 V, inside-delta circuit | 200 kW |
| Operating voltage | 200 … 460 V AC |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
Key Features
- Product designation: SIRIUS soft starter with integrated bypass contact system and thyristors.
- Standard-circuit rating: Rated current: 203 A at 40 °C; 180 A at 50 °C; 156 A at 60 °C.
- Inside-delta rating: Rated current for 3-phase motors in inside-delta circuit: 352 A at 40 °C; 312 A at 50 °C; 270 A at 60 °C.
- Motor power at 400 V: 110 kW in standard circuit and 200 kW in inside-delta circuit at 40 °C.
- Supply and connections: Operating voltage: 200 … 460 V AC; control supply: 230 V AC at 50 Hz and 60 Hz; auxiliary and control circuit connection: screw-type terminals.
- Protection and functions: Has intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, adjustable current limitation, and a motor brake output.
Frequently Asked Questions
What identifies Siemens 3RW4443-6BC44?
It is a SIRIUS soft starter with a 203 A rated current at 40 °C in standard circuit and 352 A in inside-delta circuit.
Which specifications should be checked when matching this MLFB?
Check the 200 … 460 V AC operating voltage, 230 V AC control supply at 50 Hz and 60 Hz, 110 kW standard-circuit rating at 400 V, and 200 kW inside-delta rating at 400 V.
What should be provided for a quotation?
Provide the complete order number 3RW4443-6BC44, required quantity, and destination.
Is 3RW4443-6BC44 a current product?
It is a phased-out product and has reached the start of its final year of support. The preferred successor type is 3RW5543-6HA14.
