Product Description
Key Features
- Rated current and motor power: At 40 °C, rated operational current is 57 A with 30 kW in the standard circuit, or 99 A with 55 kW in the inside-delta circuit.
- Supply and control: Operating voltage is 200 … 460 V AC with 50 … 60 Hz operating frequency. The control supply is AC, 230 V at 50 Hz and 60 Hz.
- Integrated functions: Has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, and adjustable current limitation.
- Connections and contacts: The main current circuit uses box terminals; auxiliary and control circuits use spring-loaded terminals. Auxiliary contacts include 3 NO contacts and 1 CO contact.
- Mounting and dimensions: Uses screw fixing and has a width of 170 mm, height of 192 mm, and depth of 270 mm. The mounting position permits rotation of +/-90° and tilting of +/- 22.5° with a vertical mounting surface.
- Lifecycle: Product lifecycle: start of final year of support.
Technical Summary
| Product type | Soft starter |
|---|---|
| Rated operational current at 40 °C | 57 A |
| Rated operational current in inside-delta circuit at 40 °C | 99 A |
| Motor power at 400 V, standard circuit | 30 kW |
| Motor power at 400 V, inside-delta circuit | 55 kW |
| Operating voltage | 200 … 460 V AC |
| Operating frequency | 50 … 60 Hz |
| 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 |
| Product lifecycle | Start of final year of support |
Frequently Asked Questions
What rated current does Siemens 3RW4425-3BC44 provide at 40 °C?
It provides 57 A in the standard circuit and 99 A for 3-phase motors in the inside-delta circuit.
What motor power is supported at 400 V?
The rated value is 30 kW in the standard circuit and 55 kW in the inside-delta circuit.
What connections does this soft starter have?
The main current circuit uses box terminals, while the auxiliary and control circuits use spring-loaded terminals.
How is Siemens 3RW4425-3BC44 mounted?
It uses screw fixing and requires a vertical mounting surface; the position permits +/-90° rotation and +/- 22.5° front-to-back tilting.
What lifecycle information should be confirmed for this part?
The product lifecycle is at the start of the final year of support; confirm the exact installed part and requested delivery date.
