Product Description
Key Features
- Exact SIRIUS soft starter identity: Product brand name: SIRIUS. Product designation: Soft starter. Size of engine control device: S0.
- Rated current and motor rating: Rated operational current is 25 A at 40 °C. At 40 °C, the standard-circuit rating is 11 kW at 400 V and 15 kW at 500 V.
- Supply and control: Operating voltage at standard circuit: 400 … 600 V. Control supply: 24 V AC/DC, with 50 Hz and 60 Hz rated frequencies.
- Integrated functions: The unit has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset, and adjustable current limitation.
- Connection and mounting: Main, auxiliary, and control circuits use screw-type terminals. Fastening is by screw and snap-on mounting; dimensions are 45 mm wide, 125 mm high, and 155 mm deep.
- Protection and lifecycle: Front protection class: IP20, with finger-safe protection for vertical contact from the front. Product lifecycle: Active Product.
Applications
- Motor starting: The soft starter provides controlled motor starting through adjustable current limitation and an integrated bypass contact system.
Technical Summary
| Product model | 3RW4026-1BB05 |
|---|---|
| Product family | SIRIUS soft starter S0 |
| Rated operational current at 40 °C | 25 A |
| Standard-circuit rating at 400 V, 40 °C | 11 kW |
| Standard-circuit rating at 500 V, 40 °C | 15 kW |
| Operating voltage at standard circuit | 400 … 600 V |
| Control supply | 24 V AC/DC |
| Operating frequency rated value | 50 … 60 Hz |
| Electrical connection | Screw-type terminals |
| Fastening method | Screw and snap-on mounting |
| Front protection class | IP20 |
| Product lifecycle | Active Product |
Frequently Asked Questions
What control supply does Siemens 3RW4026-1BB05 use?
The control supply is 24 V AC/DC. The rated control supply frequencies are 50 Hz and 60 Hz.
What are the rated current and motor ratings?
The rated operational current is 25 A at 40 °C. The standard-circuit rating is 11 kW at 400 V and 15 kW at 500 V, both at 40 °C.
How is the soft starter connected and mounted?
The main, auxiliary, and control circuits use screw-type terminals. Fastening is by screw and snap-on mounting.
What protection does the configured unit have?
The front protection class is IP20, with finger-safe protection for vertical contact from the front.
