3RH1921-1EA20
The 3RH1921-1EA20 is a SIRIUS 3RT1 contactor with an auxiliary switch assembly on the first side, featuring 2 NO contacts, screw terminal wiring, conforming to EN50005 standard, applicable to S0~S12 size contactors, and capable of 10 million mechanical operations.
Product Positioning
The 3RH1921-1EA20 is the first side-mounted auxiliary switch in the Siemens SIRIUS 3RT1 series of contactors, providing two sets of normally open contacts and applicable to a wide range of sizes from S0 to S12.
Core Product Advantages and Features
2NO contact configuration
It provides two sets of normally open auxiliary contacts, which can be used as operation status feedback signals.
Side-mounted quick-release installation
It adopts a snap-on side mounting method, which can be added without removing the main contactor.
Screw terminal wiring
The 10mm screw terminal design ensures secure wiring and facilitates maintenance.
Wide range of applications
Covering sizes from S0 to S12, it can be used with a variety of 3RT1 series contactors.
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3RH1921-1FA22
The 3RH1921-1FA22 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 EN50005 standard, and suitable for S0~S3 size contactors, expanding the number of signal points.
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3RH1921-1EA11
The 3RH1921-1EA11 is a SIRIUS 3RT1 contactor with an auxiliary switch assembly on the first side. It has one normally open and one normally closed contact assembly, screw terminal wiring, conforms to EN50005 standard, and is suitable for contactors of sizes S0 to S12, with a wide range of applications.
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3RH1921-1EA02
The 3RH1921-1EA02 is a SIRIUS 3RT1 contactor with an auxiliary switch assembly on the first side. It has two normally closed contacts, screw terminal wiring, conforms to EN50005 standard, and is suitable for contactors of sizes S0 to S12. It is suitable for power failure interlocking signal applications.