Product Description
Siemens 3RW4028-1BB14 Soft Starter (AC Semiconductor Motor Starter)
The Siemens SIRIUS 3RW4028-1BB14 is a compact, high-efficiency AC semiconductor motor soft starter engineered for smooth starting and stopping of three-phase asynchronous motors. Designed with an integrated bypass contact system, this unit significantly reduces heat dissipation during continuous operation, improving overall energy efficiency and saving control cabinet space.
Featuring comprehensive motor and intrinsic device overload protection with selectable trip classes (Class 10, 15, 20, or OFF), the 3RW4028-1BB14 ensures maximum operational reliability. The soft starter enables precise parameterization through rotary potentiometers, offering adjustable start/stop ramp times (0 to 20 s), adjustable initial voltage ramps (40% to 100%), and selectable current limiting (1.3 to 5 x Ie). Clear LED indicators and auxiliary contacts provide instant status feedback for device state, bypass mode, overload, and system faults.
Technical Specifications:
- Product Series: SIRIUS 3RW40
- Model Number: 3RW4028-1BB14
- Product Type: AC Semiconductor Motor Starter (Soft Starter)
- Rated Operational Current (Ie): 38 A (at 40 °C)
- Rated Operational Voltage (Ue): 200 to 480 V AC (50/60 Hz)
- Rated Power Rating: 18.5 kW at 400 V / 11 kW at 230 V (40 °C)
- Control Supply Voltage (Us): 110 to 230 V AC/DC (50/60 Hz)
- Frame Size: Size S0
- Integrated Bypass: Yes (Internal bypass contact system)
- Ramp-Up / Ramp-Down Time: 0 to 20 seconds (adjustable)
- Starting Voltage Ramp: 40% to 100% of nominal voltage
- Adjustable Current Limit: 1.3 to 5 x Ie
- Trip Class: Class 10, 15, 20, or OFF selectable
- Auxiliary Contacts: Integrated NO/NC failure and overload signaling contacts (terminals 95-96-98, 13-14/24, 23)
- Terminal Type: Screw-type terminals
- Compliance and Standards: IEC/EN 60947-4-2, UL 508, CE
Siemens 3RW4028-1BB14 Soft Starter (AC Semiconductor Motor Starter)
Shop the Siemens 3RW4028-1BB14 SIRIUS 38A soft starter with 110-230V AC/DC control, integrated bypass, Class 10/15/20 overload protection, and adjustable ramp settings for smooth three-phase motor control.
| Brand | SIEMENS |
|---|---|
| Model | 3RW4028-1BB14 |
| Part No. | 847514458294 |
| Category | Electrical |
| Link | https://www.echuan-hydraulic.com/product/siemens-3rw4028-1bb14-soft-starter-ac-semiconductor-motor-starter |