Product Description
Key Features
- Exact product identity: SIRIUS soft starter, size S0, Siemens order number 3RW4027-1BB04.
- Motor ratings: Rated operational current: 32 A at 40 °C. Standard-circuit motor rating: 15 kW at 400 V and 7.5 kW at 230 V, both at 40 °C rated value.
- Operating and control supply: Operating voltage: 200 … 480 V at standard circuit. Control supply: AC/DC, 24 V at 50 Hz, 60 Hz, or DC.
- Integrated functions: Has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset, and adjustable current limitation.
- Connections and mounting: Main, auxiliary, and control circuits use screw-type terminals. Mounting uses screw and snap-on mounting; dimensions are 45 mm wide, 125 mm high, and 155 mm deep.
- Lifecycle and protection: Product lifecycle: Active Product. Front protection class: IP20; front touch protection is finger-safe for vertical contact from the front.
Technical Summary
| Product | Siemens 3RW4027-1BB04 SIRIUS soft starter |
|---|---|
| Rated operational current at 40 °C | 32 A |
| Standard-circuit motor rating at 400 V and 40 °C | 15 kW |
| Operating voltage at standard circuit | 200 … 480 V |
| Control supply | 24 V AC/DC |
| Operating frequency | 50 … 60 Hz |
| Integrated bypass contact system | Yes |
| Motor overload protection | Yes |
| Adjustable current limitation | Yes |
| Electrical connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Product lifecycle | Active Product |
Frequently Asked Questions
What exact Siemens model should be confirmed for this soft starter?
Confirm order number 3RW4027-1BB04, SIRIUS soft starter, size S0.
What current and motor rating does the 3RW4027-1BB04 have?
The rated operational current is 32 A at 40 °C. The standard-circuit motor rating is 15 kW at 400 V and 7.5 kW at 230 V, both at 40 °C rated value.
What supply and terminals does it use?
The operating voltage is 200 … 480 V at standard circuit, the control supply is 24 V AC/DC, and the main, auxiliary, and control circuits use screw-type terminals.
How is this soft starter mounted and protected?
It uses screw and snap-on mounting. The dimensions are 45 mm wide, 125 mm high, and 155 mm deep; front protection is IP20.
