Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
| Evaluation of thermistor motor protection | Yes |
| Adjustable current limitation | Yes |
| Inside-delta circuit | Yes |
| Operational current at 40 °C | 77 A |
| At 400 V, standard circuit at 40 °C | 37 kW |
| Control supply voltage 1 at AC | 230 V |
| Protection class IP on the front according to IEC 60529 | IP20 |
Applications
Soft starting with motor overload protection, intrinsic device protection, thermistor motor protection evaluation, and adjustable current limitation.
Key Features
Product designation: Soft starter from the SIRIUS family.
Includes an integrated bypass contact system and thyristors.
Provides intrinsic device protection, motor overload protection, evaluation of thermistor motor protection, external reset, and adjustable current limitation.
Supports inside-delta circuit operation.
Main current circuit uses box terminal connections and auxiliary and control circuit uses spring-loaded terminals. Control supply voltage is 230 V AC.
Phased-out product with Start of final year of support.
Frequently Asked Questions
What is Siemens 3RW4426-3BC44?
It is a SIRIUS soft starter.
What are the main electrical ratings of 3RW4426-3BC44?
At 400 V and 40 °C, the standard circuit rating is 77 A and 37 kW. Inside-delta rating is 133 A and 75 kW.
What control supply voltage does 3RW4426-3BC44 use?
The control supply voltage is 230 V AC.
What type of terminals does 3RW4426-3BC44 have?
The main current circuit uses box terminal connections, and the auxiliary and control circuit uses spring-loaded terminals.
What lifecycle status is listed for 3RW4426-3BC44?
It is marked as a phased-out product with Start of final year of support.
