Product information
Overview
Key Features
- Soft starter ratings: At 40 °C, the rated operational current is 57 A in standard circuit and 99 A for 3-phase motors in inside-delta circuit.
- Motor power at 400 V: Rated motor power is 30 kW in standard circuit and 55 kW in inside-delta circuit at 400 V and 40 °C.
- Motor protection functions: Has intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, external reset, and adjustable current limitation.
- Control supply: Control supply voltage is 230 V AC at 50 Hz and 60 Hz, with a -15 % to 10 % tolerance at the stated frequencies.
- Connections and mounting: Has spring-loaded terminals for auxiliary and control circuits, screw fixing, and a vertical mounting surface that is +/-90° rotatable and +/- 22.5° tiltable to the front and back.
- Front protection: Front protection class is IP20 according to IEC 60529; touch protection is finger-safe for vertical contact from the front.
Technical Summary
| Product type | SIRIUS soft starter |
|---|---|
| Rated operational current at 40 °C, standard circuit | 57 A |
| Rated operational current at 40 °C, inside-delta circuit | 99 A |
| Rated motor power at 400 V, standard circuit | 30 kW |
| Rated motor power at 400 V, inside-delta circuit | 55 kW |
| Operating voltage, standard circuit | 200 … 460 V, -15 % to 10 % tolerance |
| Operating voltage, inside-delta circuit | 200 … 460 V, -15 % to 10 % tolerance |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main current circuit connection | Box terminal |
| Auxiliary and control circuit connection | Spring-loaded terminals |
| Mounting | Screw fixing; vertical mounting surface +/-90° rotatable and +/- 22.5° tiltable to the front and back |
| Front protection | IP20 according to IEC 60529 |
Frequently Asked Questions
What is the exact product type and model?
It is the Siemens SIRIUS 3RW4425-3BC44 soft starter.
What are the 400 V motor power ratings?
At 400 V and 40 °C, the rated motor power is 30 kW in standard circuit and 55 kW in inside-delta circuit.
What control supply does it use?
The control supply is 230 V AC at 50 Hz and 60 Hz, with a -15 % to 10 % tolerance at the stated frequencies.
How is the unit mounted and connected?
It uses screw fixing, a box terminal for the main current circuit, and spring-loaded terminals for auxiliary and control circuits.
How can I request a quotation?
Send the required quantity, destination, requested date, and project or parts-list context for quotation review.
