{"product_id":"siemens-auxiliary-switch-front-side-with-screw-1n-o","title":"Siemens Auxiliary switch, front side with screw, 1N\/O","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens auxiliary switch, front side with screw, 1 N\/O, article number 3RH1921-1CA10, is a front-mounted auxiliary contact accessory designed for use with contactors from the 3RT1 series. It provides one normally open auxiliary contact for signalling, indication, or interlocking purposes in control circuits. The auxiliary switch mounts directly on the front of the contactor and uses screw terminals to ensure secure and reliable electrical connections in industrial automation and motor control applications.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAuxiliary switch accessory for contactors 3RT1\u003c\/li\u003e\n\u003cli\u003eFront-side mounting design\u003c\/li\u003e\n\u003cli\u003eContact configuration: 1 normally open (1 N\/O)\u003c\/li\u003e\n\u003cli\u003eScrew terminal connections for secure wiring\u003c\/li\u003e\n\u003cli\u003eAdds signalling and feedback functionality\u003c\/li\u003e\n\u003cli\u003eCompact design for easy installation on contactors\u003c\/li\u003e\n\u003cli\u003eIndustrial-grade construction for control panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticle Number:\u003c\/strong\u003e 3RH1921-1CA10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Auxiliary switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Position:\u003c\/strong\u003e Front side of contactor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Configuration:\u003c\/strong\u003e 1 N\/O\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Screw terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Contactor Series:\u003c\/strong\u003e 3RT1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Insulation Voltage:\u003c\/strong\u003e up to 690 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurge Withstand Voltage:\u003c\/strong\u003e 6 kV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDegree of Protection:\u003c\/strong\u003e IP20 when installed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature Range:\u003c\/strong\u003e −25 °C to +60 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature Range:\u003c\/strong\u003e −55 °C to +80 °C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompliance \u0026amp; Standards\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned in accordance with Siemens requirements for auxiliary contact accessories\u003c\/li\u003e\n\u003cli\u003eSuitable for use in industrial control and automation circuits\u003c\/li\u003e\n\u003cli\u003eMeets applicable IEC standards for low-voltage switchgear auxiliaries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 3RH1921-1CA10 auxiliary switch is used to extend the signalling and control capabilities of 3RT1 contactors. Typical applications include PLC input feedback, status indication, interlocking circuits, and control logic integration in motor control centres, automation panels, and industrial machinery where a normally open auxiliary contact is required.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":40775030145088,"sku":"3RH1921-1CA10","price":85.71,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3662\/3424\/files\/G_IC03_XX_22358I.jpg?v=1761055743","url":"https:\/\/industrial.rubicon.tech\/products\/siemens-auxiliary-switch-front-side-with-screw-1n-o","provider":"Rubicon Group Industrial Technology Shop","version":"1.0","type":"link"}