{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1926-1BB00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1926-1BB00","canonicalUrl":"https://aoctrl.com/siemens/3RT1926-1BB00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1926-1BB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS varistor surge suppressor, 24...48 V AC, 24...70 V DC, clip-on mounting for contactor sizes S0, S2, S3.","salesMarkdown":"The Siemens SIRIUS 3RT1926-1BB00 is a varistor-type surge suppressor designed to clip onto the coil terminals of SIRIUS contactors in sizes S0, S2, and S3. It protects the coil circuit from voltage spikes during switching — the varistor clamps the transient, not just snubs it with an RC network. Rated for both AC and DC control supplies: 24 to 48 V AC at 50/60 Hz, and 24 to 70 V DC. ## Mounting and fit Clip-on fastening method — snaps directly onto the contactor coil terminals without tools. Mounts in any position, which helps when you're squeezing it into a tight panel alongside other SIRIUS gear. Fits S0, S2, and S3 contactor sizes, so it covers the mid-to-large frame range in the SIRIUS family. ## Environmental tolerance The 60 °C operating ceiling aligns with the contactor's own rating, so you don't lose headroom on the coil protection in a hot cabinet. The manufacturer lists this as a current-production item. The official successor is the SIRIUS 3RT2 series, but the 3RT1926-1BB00 remains available through independent distribution.","metaTitle":"Siemens 3RT1926-1BB00 SIRIUS Varistor Surge Suppressor, 24-4","metaDescription":"Siemens SIRIUS 3RT1926-1BB00 varistor surge suppressor for Size S0/S2/S3 contactors. Rated 24-48 V AC, 24-70 V DC. Clip-on mounting. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"at DC":"24 ... 70V","at 50 Hz":"24 ... 48V","at 60 Hz":"48 ... 24V","1 Rated Value":"50Hz","2 Rated Value":"60Hz","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","Design Of The Surge Suppressor":"with varistor","Type Of Voltage Of The Control Supply Voltage":"AC/DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=496094&mlfb=3RT1926-1BB00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1926-1BB00/alternatives.json"},"ai":{"faq":[{"question":"What contactor sizes does the 3RT1926-1BB00 fit?","answer":"It clips onto SIRIUS contactors in sizes S0, S2, and S3. The varistor mounts directly to the coil terminals with no additional hardware."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1926-1BB00","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/3RT1926-1BB00 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}}