3RH1921-1MA20
The Siemens SIRIUS 3RH1921-1MA20 is an auxiliary switch module with a 2-pole structure, bottom-entry screw terminal wiring, and snap-fit installation on the motor contactor body. The original manufacturer's data indicates that it has been discontinued, and it will be supplied by the SIRIUS 3RH2 series.
Product Positioning
The 3RH1921-1MA20 is an older auxiliary switch module of SIRIUS 3RH19, featuring a bottom-entry screw terminal design and a snap-fit installation on the motor contactor. Official data indicates that this model has been discontinued and has been replaced by the SIRIUS 3RH2 auxiliary switch series.
Core Product Advantages and Features
Bottom-entry terminal design
The cables enter from below, resulting in neat wiring and facilitating control panel configuration and planning.
Screw terminal wiring
It uses standard screw terminal connections, making installation and future maintenance easy.
snap-on installation structure
It is quickly and easily fixed to the motor contactor body using a snap-fit method, resulting in high assembly efficiency.
Applicable motor contactors
Auxiliary contact expansion accessories designed specifically for Siemens motor contactor series.
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3RH1921-1KA20
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