3RH1921-2CA01

The Siemens SIRIUS 3RH1921-2CA01 is a front-mounted auxiliary switch module with a single normally closed (1NC) contact, spring-loaded terminal wiring, rated at 690V/10A, and suitable for extended applications of 3RT1 series contactors in sizes S0 to S12.

Share To

Siemens SIRIUS 3RH1921-2CA01 Front-mounted Single Normally Closed Auxiliary Switch

Product Positioning

The 3RH1921-2CA01 is a front-mounted auxiliary switch module for the older SIRIUS 3RH19 model, providing a single normally closed (1NC) contact, spring-loaded terminal wiring, and is suitable for 3RT1 series contactors of sizes S0 to S12.

Core Product Advantages and Features

1NC single contact design

It provides a single normally closed contact, suitable for abnormal monitoring or power failure feedback signal applications.

Front assembly method

The contactor is installed on the front side using a snap-fit method, and the configuration angle is uniform and easy to identify.

Spring-loaded terminal wiring

The screwless spring terminal design ensures high wiring efficiency and a stable, durable connection.

Applicable to sizes S0 to S12

The 3RT1 series contactors are compatible with a variety of sizes, offering excellent flexibility in selection.

project	Specification
Contact configuration	1 NC
Installation location	Front and side mounting (1-pole)
Terminal type	Spring-loaded (cage clamp) terminals
Rated voltage and current	690 V AC / 10 A
Applicable host	SIRIUS 3RT1 series contactors

Recommend

3RH1921-2CA10

The Siemens SIRIUS 3RH1921-2CA10 is a front-mounted auxiliary switch module with a single normally open (1NO) contact, cage clamp terminal wiring, 10A/24-230V AC rated, and suitable for 3RT1 series contactors of sizes S0 to S12.

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.

3RH1921-1KA20

The 3RH1921-1KA20 is a dedicated second-side auxiliary switch assembly for the SIRIUS 3RT1 contactor. It features 2 NO contacts, screw terminal wiring, conforms to EN50005 standard, is suitable for S3~S12 size contactors, has a mechanical operation life of up to 10 million cycles, and is stable and durable.