Product Overview
Technical Summary
| Product type | Soft starter |
|---|---|
| Order number | 3RW4424-3BC44 |
| Rated current, standard circuit | 47 A at 40 °C |
| Rated current, inside-delta circuit | 81 A at 40 °C |
| Motor power at 400 V, standard circuit | 22 kW |
| Motor power at 400 V, inside-delta circuit | 45 kW |
| Operating voltage | 200 … 460 V AC, standard and inside-delta circuits |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main circuit connection | Box terminal |
| Auxiliary and control circuit connection | Spring-loaded terminals |
| Mounting | Screw fixing; vertical mounting surface, +/-90° rotatable and +/-22.5° tiltable |
| Front protection | IP20 according to IEC 60529 |
Key Features
47 A at 40 °C in the standard circuit; 81 A at 40 °C in the inside-delta circuit.
22 kW in the standard circuit and 45 kW in the inside-delta circuit.
200 … 460 V in both the standard circuit and the inside-delta circuit, with -15 % relative negative tolerance and 10 % relative positive tolerance.
AC control supply at 230 V, rated for 50 Hz and 60 Hz, with spring-loaded terminals for the auxiliary and control circuit.
Has integrated bypass contact system, intrinsic device protection, motor overload protection, adjustable current limitation, external reset, and evaluation of thermistor motor protection.
Start of final year of support. The preferred successor type is 3RW5524-3HA14; successor family: SIRIUS 3RW5.
Frequently Asked Questions
What is the exact product and rated current?
It is the Siemens SIRIUS 3RW4424-3BC44 soft starter, with 47 A at 40 °C in the standard circuit and 81 A at 40 °C in the inside-delta circuit.
What motor power is supported at 400 V?
The rated motor power is 22 kW in the standard circuit and 45 kW in the inside-delta circuit.
What supply and connection details should be retained in the BOM?
Operating voltage is 200 … 460 V AC in both circuits. The control supply is 230 V AC at 50 Hz or 60 Hz; the main circuit uses a box terminal and the auxiliary and control circuit uses spring-loaded terminals.
What lifecycle detail should be included in a quotation request?
The product is at the start of its final year of support. The preferred successor type is 3RW5524-3HA14, from the SIRIUS 3RW5 family.
