Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | SIRIUS soft starter |
| Rated operational current at 40 °C | 203 A |
| Inside-delta operational current at 40 °C | 352 A |
| Motor power at 400 V, standard circuit | 110 kW at 40 °C rated value |
| Motor power at 400 V, inside-delta circuit | 200 kW at 40 °C rated value |
| 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; vertical mounting surface +/-90° rotatable and +/- 22.5° tiltable |
| Front protection | IP00; IP20 with box terminal/cover |
Applications
- Soft starting of 3-phase AC motors: Provides soft starting for 3-phase AC motors through standard-circuit and inside-delta-circuit operation.
- Motor overload protection: Provides motor overload protection with adjustable motor current and thermistor motor protection evaluation.
- Motor brake output: Includes a motor brake output as a product component.
Key Features
- Soft starter function: Has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, external reset, and adjustable current limitation.
- Rated operational current: Rated operational current is 203 A at 40 °C, 180 A at 50 °C, and 156 A at 60 °C.
- Inside-delta circuit: Inside-delta circuit supports 352 A at 40 °C, 312 A at 50 °C, and 270 A at 60 °C; minimum load is 8 %.
- Motor power at 400 V: At 400 V, motor power is 110 kW in standard circuit and 200 kW in inside-delta circuit, both at 40 °C rated value.
- Control supply: Control supply is AC at 230 V, with rated frequencies of 50 Hz and 60 Hz.
- Connection and mounting: Main current circuit uses busbar connection; auxiliary and control circuits use screw-type terminals. Dimensions are 210 mm width, 230 mm height, and 298 mm depth, with screw fixing.
Frequently Asked Questions
1. What is the rated operational current of the 3RW4443-6BC44?
The rated operational current is 203 A at 40 °C, 180 A at 50 °C, and 156 A at 60 °C.
2. What motor power is supported at 400 V?
At 400 V, the motor power is 110 kW in standard circuit and 200 kW in inside-delta circuit, both at 40 °C rated value.
3. How is the 3RW4443-6BC44 connected and mounted?
The main current circuit uses a busbar connection, auxiliary and control circuits use screw-type terminals, and mounting uses screw fixing.
