Product Overview
Technical Summary
| Product type | Soft starter |
|---|---|
| Rated operational current at 40 °C | 77 A |
| Operational current at 40 °C in inside-delta circuit | 133 A for 3-phase motors |
| Operating voltage | 200 … 460 V at standard circuit; 200 … 460 V at inside-delta circuit |
| Power at 400 V, standard circuit | 37 kW at 40 °C |
| Power at 400 V, inside-delta circuit | 75 kW at 40 °C |
| Control supply | 230 V AC at 50 Hz and 60 Hz |
| Main current connection | Box terminal |
| Auxiliary and control connection | Spring-loaded terminals |
| Front protection | IP20 according to IEC 60529 |
| Lifecycle | Start of final year of support; preferred successor type 3RW5526-3HA14 |
Key Features
77 A at 40 °C; 68 A at 50 °C and 59 A at 60 °C.
133 A at 40 °C for 3-phase motors in inside-delta circuit.
200 … 460 V at standard circuit and inside-delta circuit.
Has intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, external reset, and adjustable current limitation.
Uses a box terminal for the main current circuit and spring-loaded terminals for auxiliary and control circuits; screw fixing and vertical mounting surface.
Start of final year of support; the preferred successor type is 3RW5526-3HA14.
Frequently Asked Questions
What is the exact product type and model?
It is the Siemens SIRIUS 3RW4426-3BC44 soft starter.
What current is available at 40 °C?
The rated operational current is 77 A at 40 °C. In an inside-delta circuit, it is 133 A for 3-phase motors at 40 °C.
What supply and connection details should be retained in the quotation?
The operating voltage is 200 … 460 V at standard circuit and inside-delta circuit. The control supply is 230 V AC at 50 Hz and 60 Hz; the main current circuit uses a box terminal, while auxiliary and control circuits use spring-loaded terminals.
What is the lifecycle status of this configuration?
It is at the start of its final year of support. The preferred successor type is 3RW5526-3HA14.
What project details should accompany a quotation request?
Provide the requested quantity, destination, schedule context, and any additional BOM line items.
