Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | Soft starter |
| Rated current, standard circuit at 40 °C | 29 A |
| Rated current, inside-delta circuit at 40 °C | 50 A |
| Motor power at 400 V, standard circuit at 40 °C | 15 kW |
| Motor power at 400 V, inside-delta circuit at 40 °C | 22 kW |
| Operating voltage | 200 … 460 V |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main current circuit connection | Box terminal, 3 poles |
| Auxiliary and control circuit connection | Spring-loaded terminals |
| Front protection | IP20 |
| Mounting | Screw fixing |
Applications
- Motor soft starting: Provides soft starting for 3-phase AC motors through standard or inside-delta circuit operation.
Key Features
- Soft starter protection and control: Has intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, adjustable current limitation, and a motor brake output.
- Rated current and motor power: Rated current is 29 A at 40 °C in standard circuit and 50 A at 40 °C in inside-delta circuit. At 400 V and 40 °C, rated motor power is 15 kW in standard circuit and 22 kW in inside-delta circuit.
- Voltage and control supply: Operating voltage is 200 … 460 V in standard and inside-delta circuits. The AC control supply is 230 V at 50 Hz and 60 Hz.
- Connections and contacts: The main current circuit has a box terminal and 3 poles. Auxiliary and control circuits use spring-loaded terminals, with 3 NO contacts and 1 CO contact.
- Installation and enclosure: Dimensions are 170 mm wide, 192 mm high, and 270 mm deep. Mounts by screw fixing and has IP20 protection on the front.
- Lifecycle status: Product lifecycle: Start of final year of support. The successor is SIRIUS 3RW5; the preferred successor type is 3RW5516-3HA14.
Frequently Asked Questions
1. What type of device is Siemens 3RW4422-3BC44?
It is a SIRIUS soft starter with integrated bypass contact system and thyristors.
2. What rated current does 3RW4422-3BC44 provide?
It provides 29 A at 40 °C in standard circuit and 50 A at 40 °C in inside-delta circuit.
3. What motor power is supported at 400 V?
At 40 °C, the rated motor power is 15 kW in standard circuit and 22 kW in inside-delta circuit.
4. How is the device connected and mounted?
The main current circuit uses a box terminal with 3 poles, auxiliary and control circuits use spring-loaded terminals, and mounting is by screw fixing.
5. What should be verified before requesting a quote?
Verify the circuit type, operating voltage, rated current, control supply, conductor cross-sections, mounting clearances, and the product lifecycle status.
