Product Description
Key Features
- Rated current and motor power: Rated current: 38 A at 40 °C; 18.5 kW at 400 V in the standard circuit at 40 °C.
- Operating voltage and control supply: Operating voltage: 200 … 480 V with -15 % relative negative tolerance and 10 % relative positive tolerance. Control supply: AC/DC, 110 … 230 V at AC and DC.
- Soft-start functions: Has an integrated bypass contact system, thyristors, motor overload protection, external reset, and adjustable current limitation.
- Electrical connections: The main current circuit and auxiliary and control circuits use screw-type terminals. The device has 3 poles for the main current circuit, 2 NO auxiliary contacts, and 1 CO auxiliary contact.
- Mounting and dimensions: S0 device with screw and snap-on mounting; dimensions: 45 mm width, 125 mm height, and 155 mm depth.
- Protection and operating conditions: Front protection class: IP20. Ambient temperature during operation: -25 … +60 °C; derating temperature: 40 °C.
Applications
- Motor starting with current limitation: Provides motor starting with adjustable current limitation and motor overload protection.
Technical Summary
| Product | Siemens 3RW4028-1BB14 SIRIUS soft starter S0 |
|---|---|
| Rated current at 40 °C | 38 A |
| Motor power at 400 V | 18.5 kW |
| Operating voltage | 200 … 480 V |
| Operating frequency | 50 … 60 Hz |
| Control supply | AC/DC, 110 … 230 V |
| Main current circuit | 3 poles; screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection | IP20 |
| Operating ambient temperature | -25 … +60 °C |
Frequently Asked Questions
What are the rated current and motor power of Siemens 3RW4028-1BB14?
The rated current is 38 A at 40 °C, and the motor power is 18.5 kW at 400 V in the standard circuit at 40 °C.
What supply voltage does the 3RW4028-1BB14 use?
The operating voltage is 200 … 480 V. The AC/DC control supply is 110 … 230 V.
How is Siemens 3RW4028-1BB14 mounted?
It uses screw and snap-on mounting. Its dimensions are 45 mm width, 125 mm height, and 155 mm depth.
Does this configuration include a motor brake output?
It is without a motor brake output.
