Key Features
- Soft starter function: SIRIUS soft starter with integrated bypass contact system and thyristors.
- Motor protection and control: Provides intrinsic device protection, motor overload protection, external reset, and adjustable current limitation.
- Electrical ratings: 32 A at 40 °C, 18.5 kW at 500 V, and 400 … 600 V operating voltage at standard circuit.
- Control supply: 24 V AC/DC control supply with screw terminals.
- Mechanical data: S0 size with screw and snap-on mounting, width 45 mm, height 125 mm, and depth 155 mm.
Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Size | S0 |
| Rated current at 40 °C | 32 A |
| Power at 500 V | 18.5 kW |
| Operating voltage at standard circuit | 400 … 600 V |
| Control supply voltage | 24 V AC/DC |
| Control supply voltage type | AC/DC |
| Operating frequency | 50 … 60 Hz |
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
Applications
- Motor starting control: Soft starting for motor circuits with adjustable current limitation.
- Motor overload protection: Motor overload protection in a soft starter circuit.
- External reset control: External reset in a motor starting and protection setup.
Frequently Asked Questions
What is the exact Siemens model and product type of 3RW4027-1BB05?
3RW4027-1BB05 is a Siemens SIRIUS soft starter.
What are the main electrical ratings of 3RW4027-1BB05?
It is rated at 32 A at 40 °C and 18.5 kW at 500 V, with a standard circuit operating voltage of 400 … 600 V.
What control supply does 3RW4027-1BB05 use?
The control supply is 24 V AC/DC.
What connection and mounting details are listed for 3RW4027-1BB05?
It uses screw terminals, screw and snap-on mounting, and has a width of 45 mm, height of 125 mm, and depth of 155 mm.
