{"product_id":"3sk1211-1bb40-siemens-sirius-safety-relay-output-expansion-unit","title":"3SK1211-1BB40 | Siemens SIRIUS Safety Relay Output Expansion Unit","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"139\" data-end=\"426\"\u003eThe Siemens 3SK1211-1BB40 is a compact safety relay output expansion unit designed for increasing the number of available safety contacts in a safety-related control circuit. This DIN rail-mounted device features four normally open (N.O.) safety outputs and one normally closed (N.C.) signaling output, with robust screw-type terminations and a 24V DC control voltage.\u003c\/p\u003e\n\u003ch2 data-start=\"428\" data-end=\"454\"\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable width=\"100%\" style=\"height: 518.833px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 36.4306px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 36.4306px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eCondition\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 36.4306px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 29.1806px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 29.1806px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 29.1806px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e\u003cspan data-sheets-root=\"1\"\u003eSiemens\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 29.8056px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 29.8056px;\"\u003eCategory\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 29.8056px;\"\u003e\n\u003cdiv class=\"mt-1 md:mt-0 column-left basis-2\/4 divide-y divide-rad-gray-10 border-b-[0.0625rem] border-rad-gray-10 md:border-0\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem] md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv class=\"max-w-[8rem] break-words\"\u003e\u003cspan\u003eSafety Systems\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 29.125px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 29.125px;\"\u003ePart Number\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 29.125px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003e3SK1211-1BB40\u003cbr\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 23.8889px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 23.8889px;\"\u003e\u003cspan\u003eSubcategory\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 23.8889px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003eSafety Relay\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 32.8056px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 32.8056px;\"\u003eSeries\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 32.8056px;\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem]  md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem]  md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem]  md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\u003cspan\u003eSiemens SIRIUS 3SK\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 27px;\"\u003e\n\u003cth class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\" style=\"width: 25.6421%; text-align: left; height: 27px;\"\u003e\u003cspan\u003eControl Voltage\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd class=\"text-left text-body1 py-10 desktop:w-[60%]\" style=\"width: 74.0369%; height: 27px;\"\u003e\u003cspan\u003e24 VDC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 30.8056px;\"\u003e\n\u003cth class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\" style=\"width: 25.6421%; text-align: left; height: 30.8056px;\"\u003e\u003cspan\u003eInputs\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd class=\"text-left text-body1 py-10 desktop:w-[60%]\" style=\"width: 74.0369%; height: 30.8056px;\"\u003e\u003cspan\u003e0\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 40.0139px;\"\u003e\n\u003cth class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\" style=\"width: 25.6421%; text-align: left; height: 40.0139px;\"\u003e\u003cspan\u003eOutputs\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd class=\"text-left text-body1 py-10 desktop:w-[60%]\" style=\"width: 74.0369%; height: 40.0139px;\"\u003e\u003cspan\u003e6 (4 N.O. safety, 1 N.C. signaling)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 33px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 33px;\"\u003e\u003cspan\u003eMounting Type\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 33px;\"\u003e\u003cspan\u003eDIN Rail\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1806px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 39.1806px;\"\u003e\u003cspan\u003eTerminal Type\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 39.1806px;\"\u003e\u003cspan\u003eScrew Terminals\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 19.5972px;\"\u003e\u003cspan\u003eEnclosure Width\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 19.5972px;\"\u003e\u003cspan\u003e22.5 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 19.5972px;\"\u003e\u003cspan\u003eProtection Rating\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 19.5972px;\"\u003e\u003cspan\u003eIP20\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5972px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 19.5972px;\"\u003e\u003cspan\u003eContact Type\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 19.5972px;\"\u003e\u003cspan\u003eRelay with Release Circuit\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 39.1944px;\"\u003e\u003cspan\u003ePackaging Dimension\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 39.1944px;\"\u003e\u003cspan\u003e36,00 x 109,00 x 152,00\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1944px;\"\u003e\n\u003cth style=\"width: 25.6421%; text-align: left; height: 39.1944px;\"\u003e\u003cspan\u003ePackage size unit of measure\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.0369%; height: 39.1944px;\"\u003e\u003cspan\u003eMM\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 30.4167px;\"\u003e\n\u003ctd style=\"width: 25.6421%; height: 30.4167px;\"\u003e\u003cstrong\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.0369%; height: 30.4167px;\"\u003e\u003cspan\u003e0,228 Kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003e3SK1211-1BB40\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe 3SK1211-1BB40 is part of the Siemens SIRIUS 3SK series and is engineered to serve as an output expansion module for basic and standard safety relays. Its main function is to extend the number of actuated contacts without adding complexity to the base unit. This device includes 4 safety-related N.O. contacts and one signaling N.C. contact, supporting a wide range of safety applications such as emergency stop circuits and protective door monitoring. Operating at 24 VDC, it is optimized for DIN rail installation in control panels with limited space. The enclosure has a protection rating of IP20, ensuring secure operation in controlled environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRelay Output Expansion Module: Increases the number of output contacts for safety relay systems.\u003c\/li\u003e\n\u003cli\u003e4 N.O. Safety Outputs + 1 N.C. Signaling Output: Provides multiple actuation options with reliable switching.\u003c\/li\u003e\n\u003cli\u003e24V DC Control Voltage: Compatible with most industrial control systems using standard safety logic.\u003c\/li\u003e\n\u003cli\u003eDIN Rail Mounting: Ensures quick installation and secure positioning within control cabinets.\u003c\/li\u003e\n\u003cli\u003eCompact 22.5 mm Housing: Ideal for space-constrained environments where panel space is limited.\u003c\/li\u003e\n\u003cli\u003eScrew-Type Terminal Connections: Secure and robust wiring solution, easy to install and maintain.\u003c\/li\u003e\n\u003cli\u003eNo Input Channels: Acts purely as an expansion device controlled by upstream logic.\u003c\/li\u003e\n\u003cli\u003eIP20 Protection Rating: Suitable for use inside electrical enclosures.\u003c\/li\u003e\n\u003cli\u003ePart of the Siemens SIRIUS 3SK Series: Compatible with standard Siemens safety relay units for seamless integration.\u003c\/li\u003e\n\u003cli\u003eReliable Relay Release Circuit: Provides dependable disengagement for connected outputs in safety scenarios.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 3SK1211-1BB40 facilitates flexible safety design by expanding outputs without complicating wiring or logic.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":49105397874944,"sku":"3SK1211-1BB40","price":605.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/shopping_80_c24818d1-44b4-4d0b-b4de-ef3aad438506.webp?v=1785546212","url":"https:\/\/alotechparts.com\/products\/3sk1211-1bb40-siemens-sirius-safety-relay-output-expansion-unit","provider":"Alo Tech Solutions","version":"1.0","type":"link"}