NEW ARRIVAL: Siemens SIRIUS 3RH1921-1CA10 Auxiliary Switch Now Available
Model Description
We are pleased to announce the immediate availability of the Siemens SIRIUS 3RH1921-1CA10 auxiliary switch, a compact, snap-on accessory designed for 3RT2 contactors and 3RH2 contactor relays. This lateral-mounted switch provides 1NC (normally closed) contact and is compatible with S00 and S0 frame devices, enabling reliable status signalling and control logic without external relays. Measuring 45mm × 12mm × 17mm and weighing only 16g, it integrates seamlessly into control cabinets for conveyors, pumps, fans and machine tools where space is at a premium.
Key Features
The 3RH1921-1CA10 delivers exceptional electrical performance with 10A AC-12 (230V) and 2A DC-12 (24V) rated contacts, ensuring reliable switching of contactors, PLCs and alarm circuits. Screw-type terminals accept 0.5–2.5mm² conductors, while the snap-on fixing method allows tool-free installation and replacement during maintenance. The device operates reliably from –20°C to +60°C, carries CE, cULus, CCC and RoHS approvals, and offers IP20 finger-safe protection, validating global deployment. Integrated channel coding prevents incorrect insertion, enhancing system safety and reducing commissioning time.
Related Models in the 3RH19 Series
The 3RH19 family offers flexible contact configurations within the same mounting footprint. 3RH1921-1CA01 provides identical 1NC contact with alternative terminal orientation, while 3RH1921-1DA11 offers 1NO+1NC contacts for more complex control schemes. For front-mounted applications, 3RH2911-1HA01 provides 1NO+1NC auxiliary contacts. All variants share identical mounting dimensions, terminal layouts and certification packages, enabling one-size panel cut-outs and unified inventory management across the SIRIUS 3RT2/3RH2 range.
Our Competitive Advantages
As a dedicated Industrial Automation trader, we provide exceptional procurement flexibility and customer-centric service solutions. Our adaptable payment structures accommodate wire transfer arrangements and customized credit facilities for approved partners, removing financial barriers to urgent maintenance requirements. We maintain significant strategic inventory in regional distribution hubs, enabling delivery within 5-7 business days to most industrial centers worldwide. Our extensive sourcing network spans premium European and Asian sensor distribution channels, ensuring authentic Telemecanique component traceability without geographic restrictions. This multi-channel approach guarantees availability during global supply chain disruptions. Our application engineers provide sensor selection consultation, detection distance calculation, and integration support, assisting with control logic configuration and wiring optimization. Through direct manufacturer partnerships and streamlined logistics, we deliver genuine Telemecanique inductive sensors with accelerated fulfillment cycles and competitive pricing structures.
For immediate quotations or technical consultation, please contact our dedicated sales team.
About Us
We are a focused industrial-automation components trader committed to delivering authentic Siemens SIRIUS solutions with speed, flexibility and technical expertise.