Here are some details about this contactor:

It is part of the Siemens SIRIUS line of contactors, which are designed for controlling electrical circuits in industrial applications.

The model number "3RT2028-1BB40" indicates the specific configuration of the contactor.

The contactor is rated for AC-3 duty, meaning it is suitable for switching motor.

It has a rated operational current of 28 Amperes (AC-3) and a coil voltage of 24 volts AC.

The contactor uses three main contacts that can handle the switching of power supply to the load.

It has an auxiliary contact configuration of 2NO+2NC (normally open and normally closed) for additional control and monitoring purposes.

The contactor features mechanical and electrical interlocks to ensure safe operation.

It complies with international standards and certifications for safety and performance.

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