Key Features
- Soft starter function: Soft starter with motor overload protection, intrinsic device protection, external reset, and adjustable current limitation.
- Integrated power components: Integrated bypass contact system and thyristors.
- Electrical ratings: 25 A at 40 °C, 15 kW at 500 V, and operating voltage 400…600 V AC.
- Control supply: 24 V AC/DC control supply with 50 Hz and 60 Hz frequency data.
- Connection and size: S0 size with screw terminals for the main current circuit and auxiliary and control circuit.
Applications
- Motor starting with reduced inrush: Soft-start control for a motor using adjustable current limitation.
- Motor protection and reset handling: Motor overload protection with external reset for controlled restart handling.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Size | S0 |
| Rated current at 40 °C | 25 A |
| Rated power at 500 V | 15 kW |
| Operating voltage | 400 … 600 V |
| Control supply voltage | 24 V AC/DC |
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
| Adjustable current limitation | Yes |
| Type of electrical connection | screw-type terminals |
Frequently Asked Questions
What is Siemens 3RW4026-1BB05?
It is a SIRIUS soft starter in S0 size.
What are the main electrical ratings of 3RW4026-1BB05?
The unit is rated at 25 A at 40 °C and 15 kW at 500 V, with operating voltage 400…600 V AC.
What control supply does 3RW4026-1BB05 use?
The control supply voltage is 24 V AC/DC.
What connection type does 3RW4026-1BB05 use?
It uses screw-type terminals for the main current circuit and for the auxiliary and control circuit.
Which built-in functions are listed for 3RW4026-1BB05?
Integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset, and adjustable current limitation are listed.
