{"product_id":"siemens-auxiliary-switch-on-the-front-3no-1nc-spring-loaded-terminal","title":"Siemens Auxiliary switch on the front, 3NO + 1NC, spring-loaded terminal","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 3RH2911-2HA31 is a front-mount auxiliary switch block designed for the SIRIUS system, with a contact configuration of 3 normally-open (NO) and 1 normally-closed (NC) contacts. It is intended for snap-on installation onto compatible contactors and relays of the SIRIUS 3RT2 and 3RH2 series, providing additional auxiliary contact functionality for monitoring and signalling tasks.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAuxiliary switch block with 3 NO + 1 NC contacts in one current path\u003c\/li\u003e\n\u003cli\u003eFront snap-on mounting for quick retrofit on the SIRIUS contactor\/relay frames\u003c\/li\u003e\n\u003cli\u003eSpring-loaded terminal connections for reliable wiring and easy installation\u003c\/li\u003e\n\u003cli\u003eRated for an insulation voltage of 690 V and surge withstand of 6 kV, making it suitable for robust industrial control environments\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\u003eProduct Series:\u003c\/strong\u003e Siemens SIRIUS 3RH2 Auxiliary Switch Blocks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticle Number:\u003c\/strong\u003e 3RH2911-2HA31\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Configuration:\u003c\/strong\u003e 3 NO + 1 NC instantaneous contacts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Insulation Voltage (Ui):\u003c\/strong\u003e 690 V AC (pollution degree 3)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Impulse Withstand Voltage (Uimp):\u003c\/strong\u003e 6 kV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Service Life:\u003c\/strong\u003e Typical 10 000 000 operations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Endurance (AC-15, 230 V):\u003c\/strong\u003e Typical 200 000 operations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperational Current of Auxiliary Contacts:\u003c\/strong\u003e – At AC-15\/230 V: 6 A – At AC-15\/400 V: 3 A – At AC-12 (24 V\/230 V): 10 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Ambient Temperature:\u003c\/strong\u003e –25 °C to +60 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e –55 °C to +80 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (H × W × D):\u003c\/strong\u003e 41.5 mm × 36 mm × 47.7 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet Weight (Approx.):\u003c\/strong\u003e 0.065 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Spring-loaded terminals; solid\/stranded 0.5–2.5 mm², finely stranded up to 1.5 mm²\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Class Front:\u003c\/strong\u003e IP20 (with connected conductors)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompliance \u0026amp; Certifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured to Siemens SIRIUS system standards for contactor accessories\u003c\/li\u003e\n\u003cli\u003eComplies with IEC\/EN standards for auxiliary contact blocks (e.g., IEC 60947-5-1)\u003c\/li\u003e\n\u003cli\u003eRoHS-compliant; document indicates environmental product declaration (EPD) available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe 3RH2911-2HA31 is ideal for use in control gear, motor-starter systems and industrial automation panels where additional auxiliary contact functionality is required for monitoring, feedback, interlocking or signalling. Its compact size, high durability and reliable contact performance enable integration with SIRIUS contactors and relays in factory automation, machinery, and process installations.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":40775095353408,"sku":"3RH2911-2HA31","price":232.78,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3662\/3424\/files\/G_NSA0_XX_00574I.jpg?v=1761056075","url":"https:\/\/industrial.rubicon.tech\/products\/siemens-auxiliary-switch-on-the-front-3no-1nc-spring-loaded-terminal","provider":"Rubicon Group Industrial Technology Shop","version":"1.0","type":"link"}