Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | Soft starter |
| Rated operational current at 40 °C | 57 A |
| Motor power at 400 V, standard circuit, 40 °C | 30 kW |
| Motor power at 400 V, inside-delta circuit, 40 °C | 55 kW |
| Rated operating voltage | 200 … 460 V AC |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main current connection | Box terminal |
| Auxiliary and control connection | Spring-loaded terminals |
| Mounting | Screw fixing |
| Front protection | IP20 |
| Product lifecycle | Start of final year of support |
Key Features
- Soft starter function: Has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, and adjustable current limitation.
- Current and motor power: Rated operational current is 57 A at 40 °C, 51 A at 50 °C, and 45 A at 60 °C. At 400 V and 40 °C, motor power is 30 kW in standard circuit and 55 kW in inside-delta circuit.
- Operating voltage: Rated operating voltage is 200 … 460 V in standard circuit and inside-delta circuit, with -15 % and 10 % relative tolerances.
- Control supply: The AC control supply is 230 V at 50 Hz and 60 Hz, with -15 % and 10 % relative voltage tolerances.
- Connections and mounting: Uses a box terminal for the main current circuit, spring-loaded terminals for auxiliary and control circuits, and screw fixing. Dimensions are 170 mm wide, 192 mm high, and 270 mm deep.
- Product status: Product lifecycle: start of final year of support. Preferred successor type: 3RW5525-3HA14.
Frequently Asked Questions
1. What type of device is Siemens 3RW4425-3BC44?
It is a SIRIUS soft starter with an integrated bypass contact system, motor overload protection, adjustable current limitation, and external reset.
2. What current and motor power does 3RW4425-3BC44 provide?
The rated operational current is 57 A at 40 °C in standard circuit. At 400 V and 40 °C, motor power is 30 kW in standard circuit and 55 kW in inside-delta circuit.
3. What operating and control supply voltage does it use?
Rated operating voltage is 200 … 460 V in standard circuit and inside-delta circuit. The AC control supply is 230 V at 50 Hz and 60 Hz.
4. How is the soft starter connected and mounted?
The main current circuit uses a box terminal, auxiliary and control circuits use spring-loaded terminals, and mounting is by screw fixing.
5. What is the status of this configuration?
It is a phased-out product at the start of its final year of support. The preferred successor type is 3RW5525-3HA14.
