Product information
Overview
Key Features
- Motor control and protection: Has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, and adjustable current limitation.
- 400 V rated performance: At 400 V and 40 °C, rated motor power is 160 kW in the standard circuit and 315 kW in the inside-delta circuit.
- Rated operational current: Rated operational current is 313 A at 40 °C, 280 A at 50 °C, and 250 A at 60 °C; for 3-phase motors in the inside-delta circuit it is 542 A, 485 A, and 433 A respectively.
- Supply and connections: Operating voltage is 200 … 460 V AC with a 50 … 60 Hz operating frequency. The control supply is AC, 230 V at 50 Hz or 60 Hz; the main current circuit uses busbar connection and auxiliary and control circuits use screw-type terminals.
- Mechanical installation: Dimensions are 210 mm wide, 230 mm high, and 298 mm deep. Mounting is by screw fixing, with a vertical mounting surface that is +/-90° rotatable and +/-22.5° tiltable to the front and back.
- Protection and spacing: Front protection is IP00, or IP20 with box terminal/cover. Side-by-side mounting requires 100 mm upwards, 5 mm at the side, and 75 mm downwards.
Technical Summary
| Product type | Soft starter |
|---|---|
| Rated operational current at 40 °C | 313 A |
| Rated operational current in inside-delta circuit at 40 °C | 542 A |
| Rated motor power at 400 V, standard circuit | 160 kW |
| Rated motor power at 400 V, inside-delta circuit | 315 kW |
| Operating voltage | 200 … 460 V AC |
| Operating frequency | 50 … 60 Hz |
| Control supply | 230 V AC at 50 Hz or 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 | IP00; IP20 with box terminal/cover |
Frequently Asked Questions
What is the rated 400 V performance of the Siemens 3RW4445-6BC44?
At 400 V and 40 °C, it has a rated motor power of 160 kW in the standard circuit and 315 kW in the inside-delta circuit. Rated operational current is 313 A in the standard circuit and 542 A in the inside-delta circuit.
What control supply does the 3RW4445-6BC44 use?
It uses an AC control supply of 230 V at 50 Hz or 60 Hz.
How is the 3RW4445-6BC44 mounted and connected?
It uses screw fixing. The main current circuit has a busbar connection, while the auxiliary and control circuits use screw-type terminals.
What is the front protection of this configuration?
Front protection is IP00, or IP20 with box terminal/cover.
How should I request a quotation for this item?
Send the required quantity, destination, and requested date for model-specific quotation support.
