Product information
Overview
Key Features
- Rated current and motor power: Rated operational current is 38 A at 40 °C; rated motor power is 18.5 kW at 400 V and 22 kW at 500 V in the standard circuit at 40 °C.
- Electrical supply: Operating voltage is 400 … 600 V with a rated operating frequency of 50 … 60 Hz. The control supply is AC/DC, 24 V.
- Soft-start functions: The unit has an integrated bypass contact system, thyristors, intrinsic device protection, motor overload protection, external reset and adjustable current limitation.
- Connections and contacts: Main, auxiliary and control circuits use screw-type terminals. Auxiliary contacts include 0 NC contacts, 2 NO contacts and 1 CO contact.
- Mounting and protection: Size is S0, with screw and snap-on mounting. Front protection is IP20 with finger-safe protection for vertical contact from the front.
Technical Summary
| Product type | SIRIUS soft starter |
|---|---|
| Order number | 3RW4028-1BB05 |
| Size | S0 |
| Rated operational current at 40 °C | 38 A |
| Motor power at 400 V | 18.5 kW |
| Motor power at 500 V | 22 kW |
| Operating voltage | 400 … 600 V |
| Control supply | 24 V AC/DC |
| Operating frequency | 50 … 60 Hz |
| Electrical connection | Screw-type terminals |
| Mounting | Screw and snap-on mounting |
| Front protection | IP20 |
Frequently Asked Questions
What are the rated current and motor power values for Siemens 3RW4028-1BB05?
The rated operational current is 38 A at 40 °C. Motor power is 18.5 kW at 400 V and 22 kW at 500 V in the standard circuit at 40 °C.
What control supply and operating voltage does this soft starter use?
It has an AC/DC control supply rated at 24 V and an operating voltage of 400 … 600 V. The rated operating frequency is 50 … 60 Hz.
How is Siemens 3RW4028-1BB05 mounted and connected?
It uses screw and snap-on mounting. The main, auxiliary and control circuits use screw-type terminals.
Does the configuration include inside-delta operation or a motor brake output?
It is without inside-delta operation and without a motor brake output.
Can I request a quotation for a quantity and destination?
Yes. Send the required quantity, destination and requested date for a model-specific quotation.
