Product information
Overview
Key Features
- Rated operational current: 250 A at 40 °C; 215 A at 50 °C and 185 A at 60 °C.
- Motor power at 400 V: 132 kW at 40 °C in the standard circuit and 250 kW at 40 °C in the inside-delta circuit.
- Voltage range: 200 … 460 V rated operating voltage in both the standard circuit and inside-delta circuit, with -15 % negative and 10 % positive tolerance.
- Control supply: 230 V AC at 50 Hz or 60 Hz, with -15 % negative and 10 % positive tolerance.
- Motor protection and control: Has intrinsic device protection, motor overload protection, thermistor motor protection evaluation, external reset, adjustable current limitation, and a motor brake output.
- Connections and mounting: Main current circuit uses busbar connections; auxiliary and control circuits use screw-type terminals. Screw fixing is provided, with vertical mounting surface rotation of +/-90° and front/back tilt of +/- 22.5°.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Product lifecycle | Start of final year of support; phased-out product |
| Rated operational current at 40 °C | 250 A |
| Motor power at 400 V, standard circuit, 40 °C | 132 kW |
| Motor power at 400 V, inside-delta circuit, 40 °C | 250 kW |
| Rated operating voltage | 200 … 460 V in standard circuit and inside-delta circuit |
| Control supply voltage | 230 V AC at 50 Hz or 60 Hz |
| Main current connection | Busbar connection |
| Auxiliary and control connection | Screw-type terminals |
| Protection class on front | IP00; IP20 with box terminal/cover |
| Preferred successor type | 3RW5544-6HA14 |
Frequently Asked Questions
What is the rated current of the Siemens 3RW4444-6BC44?
The rated operational current is 250 A at 40 °C in the standard circuit. It is 215 A at 50 °C and 185 A at 60 °C.
What motor power does the 3RW4444-6BC44 support at 400 V?
At 40 °C, it supports 132 kW in the standard circuit and 250 kW in the inside-delta circuit.
What control supply does this soft starter use?
The control supply is 230 V AC at 50 Hz or 60 Hz, with -15 % negative and 10 % positive tolerance.
How is the 3RW4444-6BC44 connected and mounted?
The main current circuit uses a busbar connection, while auxiliary and control circuits use screw-type terminals. Mounting uses screw fixing on a vertical mounting surface.
Is the Siemens 3RW4444-6BC44 a current product?
It is a phased-out product at the start of its final year of support. The preferred successor type is 3RW5544-6HA14; request a model-specific quotation with quantity and destination.
