{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2926-1BF00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2926-1BF00","canonicalUrl":"https://aoctrl.com/siemens/3RT2926-1BF00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2926-1BF00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2926-1BF00 varistor surge suppressor, 400-600 V AC 50/60 Hz, clip-on for S0 contactors.","salesMarkdown":"The Siemens SIRIUS 3RT2926-1BF00 is a varistor-type surge suppressor designed to clip onto the coil terminals of S0-frame contactors in the 3RT2.2 series. It suppresses voltage spikes from the inductive coil when the contactor drops out — protecting nearby PLC outputs, sensors, and control-circuit wiring from back-EMF that can exceed 1 kV on a 400 V AC line. The varistor clamps the transient rather than shunting it through a diode or RC network, which means it handles bidirectional spikes without polarity concerns — a clean fit for AC coils. This suppressor clips directly onto the contactor — no DIN-rail footprint, no wiring beyond the two coil terminals. The dimensions are 12 mm deep, 30 mm wide, and 19 mm high, so it adds negligible bulk to the S0 contactor stack. Mounting position is unrestricted, which helps when the contactor is oriented sideways or upside-down in a dense panel. Because it's a clip-on accessory for the S0 frame, it does not change the contactor's side-by-side mounting clearance or the required 6 mm gap to grounded parts. If the panel was laid out for a 3RT1023 or similar S0 contactor, this suppressor fits without reworking the gland plate or terminal rail. For a BOM freeze or compliance audit, this is the documentation-ready date to reference.","metaTitle":"Siemens 3RT2926-1BF00 SIRIUS Surge Suppressor, 400-600 V AC","metaDescription":"Siemens SIRIUS 3RT2926-1BF00 varistor surge suppressor for S0 contactors. Rated 400-600 V AC, 50/60 Hz. Active production. Clip-on mount. RoHS compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"12 mm","Width":"30 mm","title":"3RT2926-1BF00","Height":"19 mm","at 50 Hz":"400 ... 600 V","at 60 Hz":"400 ... 600 V","description":"surge suppressor, varistor, 400-600 V AC, 50/60 Hz, for contactors 3RT2.2","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-40 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"clip-on","Mounting Position":"any","Size Of Contactor":"S0","Product Brand Name":"SIRIUS","Product Designation":"surge suppressor","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"Varistor","Type Of Voltage Of The Control Supply Voltage":"AC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/380557f784cb04ad9d85b6c898b6c998.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=417654&mlfb=3RT2926-1BF00"},"ai":{"faq":[{"question":"What compliance documentation does this part carry?","answer":"The part complies with RoHS and REACH substance restrictions, with a substance prohibition date of October 1, 2009. This covers the EU RoHS directive requirements for restricted materials."},{"question":"Will this suppressor fit a panel built around a 3RT1016-2AP02 contactor?","answer":"No, the 3RT2926-1BF00 is sized for S0-frame contactors (3RT2.2 series), while the 3RT1016-2AP02 is an S00-frame contactor. The clip-on mechanism and physical dimensions differ between frame sizes, so it will not mount directly on an S00 contactor."},{"question":"What are the key dimensions for panel layout?","answer":"The suppressor measures 12 mm deep, 30 mm wide, and 19 mm high. It clips onto the contactor and does not require additional DIN-rail space."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2926-1BF00","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/3RT2926-1BF00 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}}