Technical Summary
| Product designation | Soft starter |
|---|---|
| Product brand name | SIRIUS |
| Size of engine control device | S2 |
| Operational current at 40 °C | 72 A |
| At 400 V standard circuit power | 37 kW |
| Operating voltage at standard circuit | 200 … 480 V |
| Control supply voltage | 24 V AC/DC |
| Control supply frequency | 50 … 60 Hz |
| Integrated bypass contact system | Yes |
| Thyristors | Yes |
| Motor overload protection | Yes |
| Adjustable current limitation | Yes |
Key Features
SIRIUS soft starter
Soft starter with product designation Soft starter and product brand name SIRIUS.
Soft starter with product designation Soft starter and product brand name SIRIUS.
S2 size and 72 A rating
Size of engine control device: S2; operational current at 40 °C rated value: 72 A.
Size of engine control device: S2; operational current at 40 °C rated value: 72 A.
37 kW at 400 V
At 400 V, the standard circuit rated value is 37 kW.
At 400 V, the standard circuit rated value is 37 kW.
Integrated bypass contact system
Integrated bypass contact system: Yes.
Integrated bypass contact system: Yes.
Control supply and connections
Control supply voltage: 24 V AC/DC; main current circuit and auxiliary and control circuit use screw-type terminals.
Control supply voltage: 24 V AC/DC; main current circuit and auxiliary and control circuit use screw-type terminals.
Applications
Motor soft starting
Soft starter for starting a motor with adjustable current limitation.
Soft starter for starting a motor with adjustable current limitation.
Motor overload protection
Provides motor overload protection in the control circuit.
Provides motor overload protection in the control circuit.
Frequently Asked Questions
What is Siemens 3RW4038-1BB04?
It is a SIRIUS soft starter with product designation Soft starter and size S2.
What current rating does 3RW4038-1BB04 have?
The operational current at 40 °C rated value is 72 A.
What are the voltage ratings for 3RW4038-1BB04?
The operating voltage at standard circuit is 200 … 480 V, and the control supply voltage is 24 V AC/DC.
Does 3RW4038-1BB04 include an integrated bypass contact system?
Yes. Integrated bypass contact system: Yes.
