Product information
Overview
Key Features
- Current and motor power: At 400 V and 40 °C, the rated operational current is 162 A for standard circuit and 281 A for inside-delta circuit; supported motor power is 90 kW standard circuit and 160 kW inside-delta circuit.
- Control and protection functions: Has intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, external reset, adjustable current limitation, and a motor brake output.
- Voltage and frequency: Operating voltage is 200 … 460 V for standard and inside-delta circuits. Rated operating frequency is 50 … 60 Hz with relative tolerance of -10 % to 10 %.
- Control supply: The control supply is AC, with 230 V at 50 Hz and 230 V at 60 Hz; the control supply voltage tolerance is -15 % to 10 %.
- Connections and contacts: The main current circuit uses a busbar connection; auxiliary and control circuits use screw-type terminals. The device has 3 NO and 1 CO auxiliary contacts.
- Mechanical installation: Dimensions are 170 mm wide, 200 mm high, and 270 mm deep. Mounting uses screw fixing; required side-by-side spacing is 100 mm upwards, 5 mm at the side, and 75 mm downwards.
Technical Summary
| Product type | SIRIUS soft starter |
|---|---|
| Standard-circuit rating at 400 V, 40 °C | 162 A; 90 kW |
| Inside-delta rating at 400 V, 40 °C | 281 A; 160 kW |
| Operating voltage | 200 … 460 V AC |
| Operating frequency | 50 … 60 Hz |
| Control supply | 230 V AC at 50 Hz or 60 Hz |
| Main 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 |
| Product lifecycle | Start of final year of support |
Frequently Asked Questions
What is the rated current of the Siemens 3RW4436-6BC44?
At 400 V and 40 °C, it has a rated operational current of 162 A in standard circuit and 281 A in inside-delta circuit.
What motor power is supported at 400 V?
At 400 V and 40 °C, the supported motor power is 90 kW in standard circuit and 160 kW in inside-delta circuit.
How is the soft starter connected?
The main current circuit uses a busbar connection, while the auxiliary and control circuits use screw-type terminals.
How is the device mounted and spaced?
It uses screw fixing on a vertical mounting surface that is +/-90° rotatable and +/- 22.5° tiltable to the front and back. Side-by-side spacing is 100 mm upwards, 5 mm at the side, and 75 mm downwards.
How can I request a quotation for this configuration?
Send the required quantity, destination, and requested date for model-specific quotation review.
