Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Size | S0 |
| Operational current at 40 °C | 38 A |
| Power at 400 V | 18.5 kW |
| Operating voltage | 200 … 480 V |
| Control supply voltage | 24 V AC/DC |
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
| Adjustable current limitation | Yes |
| Main current circuit connection | screw-type terminals |
Key Features
SIRIUS soft starter
Soft starter for the 3RW40 soft starters range.
Soft starter for the 3RW40 soft starters range.
S0 size
Size of engine control device: S0.
Size of engine control device: S0.
38 A at 40 °C
Operational current at 40 °C rated value: 38 A.
Operational current at 40 °C rated value: 38 A.
18.5 kW/400 V
At 400 V, standard circuit rated value: 18.5 kW.
At 400 V, standard circuit rated value: 18.5 kW.
24 V AC/DC control supply
Control supply voltage type: AC/DC, with 24 V at AC and DC.
Control supply voltage type: AC/DC, with 24 V at AC and DC.
Screw terminals
Type of electrical connection for main current circuit and auxiliary and control circuit: screw-type terminals.
Type of electrical connection for main current circuit and auxiliary and control circuit: screw-type terminals.
Applications
Motor soft starting
Soft starting for a motor in the standard circuit.
Soft starting for a motor in the standard circuit.
Motor overload protection
Motor overload protection.
Motor overload protection.
Current-limited motor starting
Starting with adjustable current limitation.
Starting with adjustable current limitation.
Frequently Asked Questions
What is Siemens 3RW4028-1BB04?
Siemens 3RW4028-1BB04 is a SIRIUS soft starter.
What are the current and power ratings of 3RW4028-1BB04?
The operational current at 40 °C is 38 A, and the power at 400 V is 18.5 kW.
What control supply does 3RW4028-1BB04 use?
The control supply voltage type is AC/DC, with 24 V at AC and 24 V at DC.
What connection type does 3RW4028-1BB04 use?
The main current circuit and the auxiliary and control circuit use screw-type terminals.
