{"product_id":"siemens-3rh5921-1da11-auxiliary-contact-block","title":"SIEMENS 3RH5921-1DA11 Auxiliary Contact Block 1NO+1NC 2-Pole","description":"\u003cstyle\u003e.nxs-industrial-product-page { --industrial-navy: #082f49; --industrial-blue: #0b4f7c; --industrial-blue-2: #0f6ea8; --industrial-blue-3: #1784c1; --industrial-cyan: #38bdf8; --steel-blue: #dcebf5; --steel-blue-2: #edf6fb; --steel-line: #c9dce9; --surface: #ffffff; --surface-soft: #f7fbfe; --text-main: #173042; --text-muted: #5e7382; --shadow-soft: 0 10px 30px rgba(8, 47, 73, 0.08); --shadow-hover: 0 16px 36px rgba(8, 79, 124, 0.15); --radius-lg: 14px; --radius-md: 10px; } .nxs-industrial-product-page, .nxs-industrial-product-page * { margin: 0; padding: 0; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; } .nxs-industrial-product-page { background-color: #f3f8fb; background-image: linear-gradient(180deg, #eef6fb 0, #f7fafc 320px, #eef3f7 100%), linear-gradient(rgba(15, 110, 168, 0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(15, 110, 168, 0.025) 1px, transparent 1px); background-size: auto, 34px 34px, 34px 34px; position: relative; isolation: isolate; overflow: hidden; color: var(--text-main); line-height: 1.75; -webkit-font-smoothing: antialiased; } .nxs-industrial-product-page .container { width: 92%; max-width: 1120px; margin: 0 auto; padding-bottom: 34px; } .nxs-industrial-product-page main { padding-top: 8px; } .nxs-industrial-product-page .section { position: relative; overflow: hidden; background: var(--surface); margin: 22px auto; padding: 36px 30px; border: 1px solid var(--steel-line); border-radius: var(--radius-lg); box-shadow: var(--shadow-soft); } .nxs-industrial-product-page .section::before { content:''; position: absolute; left: 0; top: 0; width: 5px; height: 100%; background: linear-gradient(180deg, var(--industrial-blue-3), var(--industrial-blue)); } .nxs-industrial-product-page .section h2 { position: relative; display: inline-flex; align-items: center; gap: 10px; font-size: 25px; line-height: 1.3; color: var(--industrial-navy); margin-bottom: 24px; 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} .nxs-industrial-product-page .spec-table td:first-child { position: relative; width: 38%; font-weight: 700; color: #0b456d; background: rgba(220, 235, 245, 0.42); } .nxs-industrial-product-page .spec-table td:first-child::after { content:''; position: absolute; top: 22%; right: 0; width: 1px; height: 56%; background: #c7dce9; } .nxs-industrial-product-page .features { display: grid; grid-template-columns: repeat(auto-fit, minmax(235px, 1fr)); gap: 18px; } .nxs-industrial-product-page .card { position: relative; overflow: hidden; min-height: 100%; background: linear-gradient(180deg, #ffffff 0%, #f4f9fc 100%); padding: 22px 20px 21px; border: 1px solid #d5e4ee; border-radius: var(--radius-md); box-shadow: 0 6px 18px rgba(8, 47, 73, 0.055); transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease; } .nxs-industrial-product-page .card::before { content:''; position: absolute; left: 0; top: 0; width: 100%; height: 4px; background: linear-gradient(90deg, var(--industrial-blue), var(--industrial-cyan)); } .nxs-industrial-product-page .card::after { content:''; position: absolute; width: 74px; height: 74px; right: -28px; bottom: -30px; border: 1px solid rgba(15, 110, 168, 0.12); border-radius: 50%; transition: transform 0.22s ease; } .nxs-industrial-product-page .card:hover { transform: translateY(-4px); border-color: #a9cadf; box-shadow: var(--shadow-hover); } .nxs-industrial-product-page .card:hover::after { transform: scale(1.25); } .nxs-industrial-product-page .card h3 { position: relative; color: var(--industrial-blue); font-size: 18px; line-height: 1.35; margin-bottom: 10px; padding-left: 14px; } .nxs-industrial-product-page .card h3::before { content:''; position: absolute; left: 0; top: 0.25em; width: 4px; height: 1em; border-radius: 4px; background: var(--industrial-blue-3); } .nxs-industrial-product-page .card p { color: #526a79; font-size: 15px; } .nxs-industrial-product-page .section ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px 18px; padding-left: 0; list-style: none; } .nxs-industrial-product-page .section li { position: relative; margin: 0; padding: 12px 14px 12px 38px; background: var(--surface-soft); border: 1px solid #dbe8f0; border-radius: 8px; color: #365264; } .nxs-industrial-product-page .section li::before { content:''; position: absolute; left: 15px; top: 50%; width: 9px; height: 9px; transform: translateY(-50%) rotate(45deg); background: var(--industrial-blue-2); box-shadow: 0 0 0 4px rgba(15, 110, 168, 0.1); } .nxs-industrial-product-page .section:nth-of-type(4) p { padding: 18px 20px; background: linear-gradient(135deg, #edf7fc, #f9fcfe); border: 1px solid #cfe4f1; border-left: 4px solid var(--industrial-blue-2); border-radius: 9px; color: #355267; } .nxs-industrial-product-page .section:last-of-type { counter-reset: faq; } .nxs-industrial-product-page .section:last-of-type \u003e p { position: relative; margin: 0; padding: 18px 18px 18px 54px; background: #f8fbfd; border: 1px solid #d8e6ef; border-radius: 9px; box-shadow: 0 4px 12px rgba(8, 47, 73, 0.035); transition: border-color 0.2s ease, background-color 0.2s ease; counter-increment: faq; } .nxs-industrial-product-page .section:last-of-type \u003e p:hover { background: #f1f8fc; border-color: #bfd8e7; } .nxs-industrial-product-page .section:last-of-type \u003e p::before { content: counter(faq, decimal-leading-zero); position: absolute; left: 15px; top: 17px; min-width: 28px; height: 28px; display: inline-flex; align-items: center; justify-content: center; border-radius: 6px; background: var(--industrial-blue); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: 0.3px; box-shadow: 0 5px 12px rgba(8, 79, 124, 0.18); } .nxs-industrial-product-page .section:last-of-type \u003e p strong { display: inline-block; color: #0b456d; margin-bottom: 5px; line-height: 1.4; } .nxs-industrial-product-page .section:last-of-type \u003e br { display: block; content:''; margin: 10px 0; } @media (max-width: 760px) { .nxs-industrial-product-page .container { width: 100%; padding: 0 12px 24px; } .nxs-industrial-product-page .section { padding: 26px 17px 24px; margin: 14px auto; border-radius: 11px; } .nxs-industrial-product-page .section::before { width: 4px; } .nxs-industrial-product-page .section h2 { font-size: 21px; margin-bottom: 18px; } .nxs-industrial-product-page .section h2::before { width: 20px; flex-basis: 20px; } .nxs-industrial-product-page .spec-table { display: table; table-layout: fixed; } .nxs-industrial-product-page .spec-table td { padding: 11px 9px; font-size: 13px; line-height: 1.55; overflow-wrap: anywhere; } .nxs-industrial-product-page .spec-table td:first-child { width: 42%; } .nxs-industrial-product-page .features { grid-template-columns: 1fr; gap: 12px; } .nxs-industrial-product-page .card { padding: 18px 17px; } .nxs-industrial-product-page .card:hover { transform: none; } .nxs-industrial-product-page .section ul { grid-template-columns: 1fr; gap: 9px; } .nxs-industrial-product-page .section li { padding: 11px 12px 11px 36px; font-size: 14px; } .nxs-industrial-product-page .section:last-of-type \u003e p { padding: 16px 14px 16px 48px; font-size: 14px; } .nxs-industrial-product-page .section:last-of-type \u003e p::before { left: 12px; top: 15px; min-width: 26px; height: 26px; font-size: 10px; } } @media (prefers-reduced-motion: reduce) { .nxs-industrial-product-page, .nxs-industrial-product-page *, .nxs-industrial-product-page *::before, .nxs-industrial-product-page *::after { transition: none !important; } }\u003c\/style\u003e\u003cdiv class=\"nxs-industrial-product-page\"\u003e\u003cdiv class=\"container\"\u003e\u003cmain\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSIEMENS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003e3RH5921-1DA11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eAuxiliary Contact Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Brand Name\u003c\/td\u003e\n\u003ctd\u003eSIRIUS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Configuration\u003c\/td\u003e\n\u003ctd\u003e1 NO + 1 NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Poles\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Position\u003c\/td\u003e\n\u003ctd\u003eLateral\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Method\u003c\/td\u003e\n\u003ctd\u003eSnap-On Mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Connection\u003c\/td\u003e\n\u003ctd\u003eScrew-Type Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplicable Contactor Sizes\u003c\/td\u003e\n\u003ctd\u003eS0...S12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDIN EN 50005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e80 × 10 × 71 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Protection Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-25°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"features\"\u003e\n\u003carticle class=\"card\"\u003e\u003ch3\u003e1 NO + 1 NC Contacts\u003c\/h3\u003e\n\u003cp\u003eProvides one normally open and one normally closed instantaneous auxiliary contact.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e2-Pole Configuration\u003c\/h3\u003e\n\u003cp\u003eThe auxiliary contact block uses a documented 2-pole contact configuration.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eLateral Mounting\u003c\/h3\u003e\n\u003cp\u003eDesigned as the first laterally mountable auxiliary switch for applicable contactor installations.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eScrew-Type Terminals\u003c\/h3\u003e\n\u003cp\u003eAuxiliary and control circuit connections use screw-type terminals.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e10 mm Width\u003c\/h3\u003e\n\u003cp\u003eThe documented product width is 10 mm, with overall dimensions of 80 × 10 × 71 mm.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eIP20 Front Protection\u003c\/h3\u003e\n\u003cp\u003eManufacturer technical data specifies an IP20 protection rating on the front.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eContactor auxiliary signaling circuits\u003c\/li\u003e\n\u003cli\u003eMotor control panel status indication\u003c\/li\u003e\n\u003cli\u003eControl circuit contact expansion\u003c\/li\u003e\n\u003cli\u003eElectrical interlocking circuits\u003c\/li\u003e\n\u003cli\u003eIndustrial machine control circuits\u003c\/li\u003e\n\u003cli\u003eContactor feedback signaling\u003c\/li\u003e\n\u003cli\u003eControl cabinet switching circuits\u003c\/li\u003e\n\u003cli\u003eIndustrial equipment maintenance projects\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003ePurchase Information\u003c\/h2\u003e\n\u003cp\u003eWe support online purchase of the SIEMENS 3RH5921-1DA11 Auxiliary Contact Block. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is SIEMENS 3RH5921-1DA11?\u003c\/strong\u003e\u003cbr\u003eSIEMENS 3RH5921-1DA11 is a SIRIUS auxiliary contact block with one normally open and one normally closed instantaneous contact.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat contact configuration does 3RH5921-1DA11 use?\u003c\/strong\u003e\u003cbr\u003eIt provides 1 NO + 1 NC auxiliary contacts in a 2-pole configuration.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eHow is 3RH5921-1DA11 mounted?\u003c\/strong\u003e\u003cbr\u003eManufacturer technical data identifies it as a laterally mountable auxiliary switch with snap-on mounting.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat terminal type does 3RH5921-1DA11 use?\u003c\/strong\u003e\u003cbr\u003eThe auxiliary and control circuit connection uses screw-type terminals.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat standard is specified for 3RH5921-1DA11?\u003c\/strong\u003e\u003cbr\u003eThe product description specifies DIN EN 50005.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of 3RH5921-1DA11?\u003c\/strong\u003e\u003cbr\u003eThe documented dimensions are 80 mm high, 10 mm wide and 71 mm deep.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the front protection rating?\u003c\/strong\u003e\u003cbr\u003eManufacturer technical data specifies IP20 protection on the front.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the operating temperature range?\u003c\/strong\u003e\u003cbr\u003eThe documented operating ambient temperature range is -25°C to +60°C.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat contactor sizes are identified for this auxiliary contact block?\u003c\/strong\u003e\u003cbr\u003eThe manufacturer product description identifies sizes S0...S12 for motor contactor use.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat applications can 3RH5921-1DA11 be considered for?\u003c\/strong\u003e\u003cbr\u003eIt can be considered for auxiliary signaling, status indication, interlocking and control circuit functions after the system requirements have been checked.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat should be verified before using 3RH5921-1DA11 in an existing system?\u003c\/strong\u003e\u003cbr\u003eCheck the complete model number, contact configuration, mounting arrangement, terminal requirements and electrical ratings against the existing system requirements.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat should be checked before ordering?\u003c\/strong\u003e\u003cbr\u003eVerify the complete 3RH5921-1DA11 model number, 1 NO + 1 NC configuration, lateral mounting requirement, screw-terminal connection and applicable contactor requirements before purchasing.\u003c\/p\u003e\u003c\/section\u003e\u003c\/main\u003e\u003c\/div\u003e\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":46716222668879,"sku":"CL5-SIEMENS-3RH5921-1DA11","price":12.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/7569\/2623\/files\/3RH5921-1DA11_2.jpg?v=1788745450","url":"https:\/\/yunshuotrade.com\/products\/siemens-3rh5921-1da11-auxiliary-contact-block","provider":"yunshuotrade","version":"1.0","type":"link"}