Product Overview
Applications
Provides motor overload protection and adjustable motor current for motor overload protection from 26 A.
Provides adjustable current limitation and an inside-delta circuit for 3-phase motors.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Standard-circuit operational current at 40 °C | 134 A |
| Inside-delta operational current at 40 °C | 232 A |
| Standard-circuit motor power at 400 V and 40 °C | 75 kW |
| Inside-delta motor power at 400 V and 40 °C | 132 kW |
| Operating voltage | 200 … 460 V, with -15 % negative tolerance and 10 % positive tolerance |
| Control supply | AC, 230 V at 50 Hz and 60 Hz |
| Main current connection | Busbar connection |
| Mounting | Screw fixing; vertical mounting surface +/-90° rotatable and +/- 22.5° tiltable to the front and back |
| Front protection | IP00; IP20 with box terminal/cover |
| Lifecycle | Start of final year of support; preferred successor type 3RW5535-6HA14 |
Key Features
134 A at 40 °C in standard circuit; 117 A at 50 °C and 100 A at 60 °C.
232 A at 40 °C, 203 A at 50 °C, and 173 A at 60 °C for 3-phase motors in inside-delta circuit.
Has intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, and external reset.
Main current circuit uses busbar connection; auxiliary and control circuits use screw-type terminals.
Phased-out product; product lifecycle is start of final year of support. Preferred successor type: 3RW5535-6HA14.
Frequently Asked Questions
What is the exact Siemens line item?
It is the Siemens SIRIUS 3RW4435-6BC44 soft starter.
What operating current is available at 40 °C?
The rated operational current is 134 A in standard circuit and 232 A for 3-phase motors in inside-delta circuit.
What control supply does it use?
The control supply is AC, 230 V at 50 Hz and 60 Hz.
How is the unit mounted and connected?
It uses screw fixing. The main current circuit uses a busbar connection, while auxiliary and control circuits use screw-type terminals.
What should be included in a project quotation for this line item?
Include the requested quantity, destination, schedule context, and any additional BOM lines. The product is phased out and has a preferred successor type of 3RW5535-6HA14.
