Key Features
- Soft starter: SIRIUS soft starter for motor starting and control.
- Integrated bypass contact system: Integrated bypass contact system and thyristors.
- Rated performance: Values at 400 V, 40 °C standard: 77 A and 37 kW.
- Inside-delta rating: Inside-delta: 133 A and 75 kW.
- Control and connection: 200-460 V AC operating voltage, 230 V AC control supply, spring-loaded terminals.
- Lifecycle: Phased-out product; preferred successor type is 3RW5526-3HA14.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
| Adjustable current limitation | Yes |
| Inside-delta circuit | Yes |
| Operational current at 40 °C | 77 A |
| Operational current for 3-phase motors at inside-delta circuit at 40 °C | 133 A |
| Operating voltage at standard circuit | 200 … 460 V |
| Control supply voltage 1 at AC | 230 V |
| Protection class IP on the front according to IEC 60529 | IP20 |
Applications
- Motor starting with adjustable current limitation: Starting motors with adjustable current limitation.
- Motor overload protection: Protecting a motor against overload.
Frequently Asked Questions
What is Siemens 3RW4426-3BC44?
It is a SIRIUS soft starter.
What are the main electrical ratings of 3RW4426-3BC44?
Values at 400 V, 40 °C standard are 77 A and 37 kW. Inside-delta values are 133 A and 75 kW.
What control supply and operating voltage does 3RW4426-3BC44 use?
The control supply is 230 V AC, and the operating voltage is 200 … 460 V.
What connection type is used for 3RW4426-3BC44?
The main current circuit uses a box terminal, and the auxiliary and control circuit uses spring-loaded terminals.
