{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1926-3AF31","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1926-3AF31","canonicalUrl":"https://aoctrl.com/siemens/3RT1926-3AF31","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1926-3AF31","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, mechanical latching block, 3RT1926-3AF31, 110 V AC/DC, clip-on for S0/S2 contactors, IP20, screw terminals.","salesMarkdown":"The Siemens SIRIUS 3RT1926-3AF31 is a mechanical latching block designed to hold a contactor closed without continuous coil power — a common requirement for safety hold circuits or applications where a maintained state must survive a control-voltage dip. It clips onto S0 and S2 frame contactors in the 3RT1.2 and 3RT1.3 series, accepting a 110 V AC/DC control supply through its screw-type terminals. The latching block mounts via clip-on fastening to the contactor front, occupying no additional DIN-rail width — it adds depth only. Rated for any mounting position, it fits panels where the contactor is installed horizontally or inverted. Screw terminals accept 2x (0.5... 2.5 mm²) solid or 1x 4 mm² solid conductors, with equivalent AWG capacity of 2x 14 or 1x 12 for the auxiliary circuit. This matches the wire sizes typically run to contactor coils in control panels — no special crimping or ferruling required for solid wire, though the terminal also accepts stranded with core-end processing.","metaTitle":"Siemens SIRIUS 3RT1926-3AF31 Mechanical Latch, 110 V AC/DC","metaDescription":"Siemens SIRIUS 3RT1926-3AF31 mechanical latching block for 3RT1.2 and 3RT1.3 contactors. 110 V AC/DC coil, clip-on mounting, IP20. Phased out; successor is SIRIUS 3RT2. Sourced to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Solid":"2x (0.5 ... 2.5 mm²), 1x 4 mm²","During Storage":"-50 ... +80°C","lifecycle_stage":"current","During Operation":"-25 ... +60°C","Fastening Method":"clip-on","Mounting Position":"any","Size Of Contactor":"S0, S2","Product Brand Name":"SIRIUS","Product Designation":"mechanical latch","For Auxiliary Contacts":"0","With Core End Processing":"2x (0.5 ... 2.5 mm²), 1x 2.5 mm²","protection class IP on the front":"IP20","at AWG cables for auxiliary contacts":"2x 14, 1x 12","Type Of Voltage Of The Control Supply Voltage":"AC/DC","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"300V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$50.15","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=68165&mlfb=3RT1926-3AF31","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1926-3AF31/alternatives.json"},"ai":{"faq":[{"question":"What contactors does 3RT1926-3AF31 fit?","answer":"It fits S0 and S2 frame contactors from the Siemens 3RT1.2 and 3RT1.3 series, clipping onto the front of the contactor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1926-3AF31","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RT1926-3AF31 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}