Product Description
Key Features
- Exact product identity: SIRIUS soft starter, Siemens 3RW4446-6BC44.
- Rated performance: At 400 V and 40 °C: 356 A and 200 kW in standard circuit; 617 A and 355 kW in inside-delta circuit.
- Control and protection: Has integrated bypass contact system, intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, and adjustable current limitation.
- Electrical data: Operating voltage: 200 … 460 V AC. Control supply: 230 V AC at 50 Hz or 60 Hz.
- Connections and mounting: Main current circuit: busbar connection. Auxiliary and control circuit: screw-type terminals. Mounting: screw fixing.
- Lifecycle status: Phased-out product; product lifecycle: start of final year of support.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Standard-circuit rated current at 40 °C | 356 A |
| Standard-circuit rated power at 400 V and 40 °C | 200 kW |
| Inside-delta rated current at 40 °C | 617 A |
| Inside-delta rated power at 400 V and 40 °C | 355 kW |
| Operating voltage | 200 … 460 V AC |
| Control supply | 230 V AC at 50 Hz or 60 Hz |
| Main current connection | Busbar connection |
| Auxiliary and control connection | Screw-type terminals |
| Front protection | IP00; IP20 with box terminal/cover |
| Product lifecycle | Start of final year of support |
Frequently Asked Questions
What is the rated current of Siemens 3RW4446-6BC44?
The rated current is 356 A at 40 °C in standard circuit and 617 A at 40 °C in inside-delta circuit.
What motor power is specified at 400 V?
At 400 V and 40 °C, the rated motor power is 200 kW in standard circuit and 355 kW in inside-delta circuit.
How is the 3RW4446-6BC44 connected and mounted?
The main current circuit uses a busbar connection, the auxiliary and control circuit uses screw-type terminals, and mounting is by screw fixing.
What lifecycle information should be confirmed for this model?
The product is phased out, and its lifecycle is at the start of the final year of support. Confirm the exact installed part and required condition before making an inquiry.
