{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2926-1MR00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2926-1MR00","canonicalUrl":"https://aoctrl.com/siemens/3RT2926-1MR00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2926-1MR00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS surge suppressor, diode combination with LED, 24 V DC, for contactors 3RT2.2, S0 size, clip-on mounting, 12 mm depth.","salesMarkdown":"The Siemens SIRIUS 3RT2926-1MR00 is a surge suppressor — a diode combination with an integrated LED indicator — designed specifically for 24 V DC control circuits on 3RT2.2 contactors. It clips onto the contactor coil terminals, suppressing the inductive flyback voltage that occurs when the DC coil de-energizes. Without it, that voltage spike can weld relay contacts or damage the PLC output driving the coil. The LED gives a quick visual on coil energization, which helps during panel commissioning or fault-finding. This is the S0-size variant, meaning it mates with the S0 frame contactors in the 3RT2.2 family. The clip-on fastening method means it snaps directly onto the contactor without tools — no extra wiring or DIN-rail space needed. It occupies zero additional panel width because it rides on the contactor itself. The mounting position is unrestricted, so it works in horizontal, vertical, or inverted orientations. Depth is 12 mm, width 30 mm, height 19 mm. These are the suppressor's own dimensions, not the contactor's. Because it clips onto the contactor face, the depth adds to the contactor's front-to-back panel projection. If your enclosure depth is tight — say a shallow gland plate or a door-mounted operator station — that 12 mm extra matters. The 30 mm width is narrower than a standard DIN-rail terminal block, so it won't overhang the contactor body. ## Environmental limits The operating limit is what matters in the panel: at 60 °C ambient, the diode junction still suppresses the coil spike reliably. No derating curve is published for this accessory, but staying within the contactor's own operating range is standard practice.","metaTitle":"Siemens 3RT2926-1MR00 SIRIUS Surge Suppressor, 24 V DC, Diod","metaDescription":"Siemens SIRIUS 3RT2926-1MR00 surge suppressor, diode combination with LED, 24 V DC, for 3RT2.2 contactors. Active production. S0 size, clip-on mounting. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"12mm","Width":"30mm","title":"3RT2926-1MR00","Height":"19mm","description":"surge suppressor, diode combination with LED, 24 V DC, for contactors 3RT2.2","During Storage":"-40 ... +80°C","lifecycle_stage":"current","During Operation":"-25 ... +60°C","Fastening Method":"clip-on","Mounting Position":"any","Size Of Contactor":"S0","at DC rated value":"24V","Product Brand Name":"SIRIUS","Product Designation":"surge suppressor","Design Of The Surge Suppressor":"Diode combination","Type Of Voltage Of The Control Supply Voltage":"DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.91","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7cc49aa1ff7f08d61f6863260b6ee1b2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=288267&mlfb=3RT2926-1MR00"},"ai":{"faq":[{"question":"Where can I buy 3RT2926-1MR00?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm position."},{"question":"What is the closest functional alternative to 3RT2926-1MR00?","answer":"The 3RT1016-1BB42 is a power contactor, not a surge suppressor — it's a different device class. For a direct drop-in replacement, only another S0-size, 24 V DC diode suppressor from the same SIRIUS family fits the 3RT2.2 contactor. No second-source order code is listed in the official documentation."},{"question":"What is the depth of 3RT2926-1MR00?","answer":"The depth is 12 mm. This is the suppressor body only; it adds to the contactor's front-to-back dimension when clipped on."},{"question":"What is the width of 3RT2926-1MR00?","answer":"The width is 30 mm. It matches the S0 contactor width and does not overhang the contactor body."},{"question":"What compliance documentation is available for 3RT2926-1MR00?","answer":"The part carries the SIRIUS brand designation. Standard Siemens documentation for this series includes a declaration of conformity to relevant EU directives (CE marking). RoHS and REACH compliance is standard for current-production SIRIUS components, though specific certificates are not listed in the spec record. Submit an RFQ to request the compliance pack for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2926-1MR00","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/3RT2926-1MR00 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}