3RA2921-1AA00
The Siemens SIRIUS 3RA2921-1AA00 is a screw terminal connection module that provides both electrical and mechanical connections. It can combine the 3RV2.1/3RV2.2 motor protection circuit breaker and the 3RT2.2 (S0) contactor into an integrated motor starter, suitable for contactors with AC operating voltage.
Product Positioning
The 3RA2921-1AA00 is a SIRIUS 3RA29 motor starter assembly accessory, used for the main circuit connection and mechanical fixation between the S00/S0 circuit breaker and the S0 contactor, eliminating the need for separate wiring and suitable for standardized assembly of direct motor start circuits within the control panel.
Core Product Advantages and Features
Electrical and mechanical integration
Simultaneously, the main circuit electrical connection and mechanical fixation between the circuit breaker and the contactor are completed, simplifying the assembly steps and making the wiring inside the panel neater.
Corresponding S00/S0 circuit breaker
It can be used with 3RV2.1 (S00) and 3RV2.2 (S0) motor protection circuit breakers, covering the protection current range of commonly used small motors.
Paired with S0 contactor
Designed specifically for 3RT2.2 (S0) contactors, it forms an integrated direct starter, saving panel installation space.
AC operating screw terminal board
Screw terminal connection version, suitable for AC operating voltage contactors; for DC operation, please select 3RA2921-1BA00.