3RH1921-1JA11
The 3RH1921-1JA11 is an auxiliary switch assembly mounted on the second side of the SIRIUS 3RT1 contactor. It has one normally open contact and one normally closed contact, screw terminal wiring, conforms to EN50012 standard, is suitable for contactors of sizes S3 to S12, and is reliable and durable.
Product Positioning
3RH1921-1JA11 is the second set of side-mounted auxiliary switches for Siemens SIRIUS 3RT1 series contactors, providing one set of normally open and one set of normally closed contacts, and conforming to EN50012 installation specifications.
Core Product Advantages and Features
1NO+1NC switching contact
It has both normally open and normally closed signals, making it suitable for interlocking protection circuit design.
Side-mounted quick-release installation
It is snap-on mounted on the side of the 3RT1 body for quick installation.
Screw terminal wiring
Standard 10mm screw terminals ensure secure and reliable wiring.
Compliant with EN50012 standard
It adopts the EN50012 installation dimension standard and is highly compatible with products in the same series.
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3RH1921-1KA11
The 3RH1921-1KA11 is an auxiliary switch assembly mounted on the second side of the SIRIUS 3RT1 contactor. It has one normally open contact and one normally closed contact, screw terminal wiring, conforms to EN50005 standard, and is suitable for contactors of sizes S3 to S12, facilitating the expansion of control signals.
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3RH1921-1HA22
3RH1921-1HA22 is a SIRIUS 3RT1 contactor with a front-mounted 4-pole auxiliary switch assembly, consisting of 2 normally open and 2 normally closed contacts, screw terminal wiring, conforming to EN50012 standard, and suitable for S0~S3 size contactors. The original manufacturer's note indicates that it is no longer in production.
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3RH1921-1HA13
3RH1921-1HA13 is a SIRIUS 3RT1 contactor with a front-mounted 4-pole auxiliary switch assembly, consisting of 1 normally open and 3 normally closed contacts, screw terminal wiring, conforming to EN50012 standard, and suitable for S0~S3 size contactors. The original manufacturer's note indicates that it is no longer in production.