3RH1921-1CA01
The Siemens SIRIUS 3RH1921-1CA01 pre-amplified auxiliary switch features one set of instantaneous normally closed auxiliary contacts, screw terminals, a mechanical life of up to 10 million cycles, and snap-fit installation on the front of the 3RT1 series contactor.
Product Positioning
The 3RH1921-1CA01 is a front-mounted auxiliary switch module from the Siemens SIRIUS series. It provides standard instantaneous normally closed auxiliary contacts, has a long mechanical life, and is suitable for control circuits that operate stably for a long time.
Core Product Advantages and Features
Instantaneous action contact
The normally closed contact switches synchronously and instantaneously with the main contactor, ensuring timely and accurate signal feedback.
High mechanical life
The mechanical life can reach up to 10 million switching cycles, with excellent durability.
Front snap-fit installation
It is snap-on installed on the front of the 3RT1 series contactor, allowing for quick installation.
Screw terminal wiring
The screw terminal design ensures secure wiring and facilitates future maintenance.
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3RH1921-1CA10
The Siemens SIRIUS 3RH1921-1CA10 pre-amplifier switch features one set of instantaneous normally open auxiliary contacts, a 10A/690V screw terminal design, and snap-fit mounting on the front of the 3RT1 series contactor, ensuring stable signal feedback.
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3RH1911-2FA40
The Siemens SIRIUS 3RH1911-2FA40 pre-amplified auxiliary contact module features 4 normally open auxiliary contacts, spring-loaded terminals, and is compatible with S00 size 3RH10/3RT10 series contactors and relays, offering a high number of contacts.
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3RH1911-1HA22
Siemens SIRIUS 3RH1911-1HA22 front auxiliary contact module, with 2 sets of normally open and 2 sets of normally closed auxiliary contacts, screw terminals, suitable for S00 size 3RH10/3RT10 series contactors and relays.