Product information
Overview
Key Features
- Rated current: 36 A at 40 °C in standard circuit; 62 A at 40 °C for 3-phase motors in inside-delta circuit.
- Motor power at 400 V: 18.5 kW in standard circuit and 30 kW in inside-delta circuit at 40 °C rated value.
- Operating voltage: 200 … 460 V rated value in both standard circuit and inside-delta circuit, with -15 % and 10 % tolerances.
- Protection and control functions: Has intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, external reset, and adjustable current limitation.
- Connections and mounting: Uses a box terminal for the main current circuit and spring-loaded terminals for auxiliary and control circuits; screw fixing.
- Product status: Phased-out product; successor is SIRIUS 3RW5, with preferred successor type >>3RW5517-3HA14<<.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Rated current at 40 °C, standard circuit | 36 A |
| Rated current at 40 °C, inside-delta circuit | 62 A |
| Rated operating voltage | 200 … 460 V |
| Motor power at 400 V, standard circuit | 18.5 kW |
| Motor power at 400 V, inside-delta circuit | 30 kW |
| Control supply voltage | 230 V AC at 50 Hz and 60 Hz |
| Main current circuit connection | Box terminal |
| Auxiliary and control circuit connection | Spring-loaded terminals |
| Mounting | Screw fixing |
| Front protection | IP20 according to IEC 60529 |
| Lifecycle | Start of final year of support |
Frequently Asked Questions
What is the rated current of Siemens 3RW4423-3BC44?
It has 36 A at 40 °C in standard circuit and 62 A at 40 °C for 3-phase motors in inside-delta circuit.
What motor power is supported at 400 V?
At 40 °C rated value, it has 18.5 kW in standard circuit and 30 kW in inside-delta circuit.
What connections does this soft starter have?
The main current circuit uses a box terminal. Auxiliary and control circuits use spring-loaded terminals.
What is the mounting method and front protection?
Mounting is by screw fixing, and the front protection class is IP20 according to IEC 60529.
How can I request a quotation for this configuration?
Send the required quantity, destination, requested date, and project list context for MRO or project quotation review.
