{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1926-1BD00-ZX90","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1926-1BD00-ZX90","canonicalUrl":"https://aoctrl.com/siemens/3RT1926-1BD00-ZX90","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1926-1BD00-ZX90","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1926-1BD00-ZX90 varistor surge suppressor, 127...240 V AC / 150...250 V DC, for mounting to contactor sizes S0 through S3, multi-unit packaging of 10.","salesMarkdown":"The Siemens SIRIUS 3RT1926-1BD00-ZX90 is a varistor-type surge suppressor rated for 127...240 V AC and 150...250 V DC, designed to clamp voltage transients across the coil of a contactor. It mounts directly onto SIRIUS contactors in frame sizes S0, S1, S2, and S3 — the common range for motor loads up to roughly 37 kW at 400 V. The multi-unit packaging ships 10 pieces per order code, which is typical for panel builders who fit one per contactor across a line. The 3RT1926-1BD00-ZX90 is listed as a phased-out product. The official Siemens successor is the SIRIUS 3RT2 series surge suppressor, which shares the same voltage range and mounting footprint for S0 through S3 contactors. For a BOM line that was specified around this order code, the 3RT2 variant is the drop-in replacement — same function, same panel cutout, same wiring. The 127...240 V AC / 150...250 V DC voltage range covers the most common control supply voltages in industrial panels — 120 V and 230 V AC, plus 125 V and 220 V DC. The varistor clamps the inductive kick when the contactor coil de-energizes, protecting nearby PLC outputs and DC power supplies from voltage spikes. The S0 through S3 frame compatibility means it fits the same contactor sizes that handle motor currents from about 9 A (S0) up to roughly 65 A (S3) in AC-3 duty. If your panel uses SIRIUS contactors in those sizes, this suppressor clips directly onto the coil terminals without extra wiring or DIN-rail space.","metaTitle":"Siemens 3RT1926-1BD00-ZX90 SIRIUS Surge Suppressor, 127-240","metaDescription":"Siemens SIRIUS 3RT1926-1BD00-ZX90 varistor surge suppressor, 127-240 V AC / 150-250 V DC. For S0-S3 contactors. Phased-out; successor 3RT2 series. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current","Product Brand Name":"SIRIUS","Product Designation":"surge suppressor"}},"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=23086&mlfb=3RT1926-1BD00-ZX90","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1926-1BD00-ZX90/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1926-1BD00-ZX90?","answer":"We source the 3RT1926-1BD00-ZX90 to order against an RFQ through independent distribution channels. Current pricing and availability are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What is the closest functional second-source for 3RT1926-1BD00-ZX90?","answer":"The official Siemens successor, the SIRIUS 3RT2 series surge suppressor, is the closest functional replacement. It shares the same voltage rating (127-240 V AC / 150-250 V DC) and the same mounting interface for S0 through S3 contactors, so it drops into the same panel position without rewiring."},{"question":"Will 3RT1926-1BD00-ZX90 fit a panel specified around 3RT5056-8AP38-0PR0?","answer":"The 3RT1926-1BD00-ZX90 is a surge suppressor for contactor coils, while the 3RT5056-8AP38-0PR0 is a power contactor. The suppressor mounts onto the contactor's coil terminals, so it fits any SIRIUS contactor in frame sizes S0 through S3 — including the 3RT5056 series if that contactor is in that frame range. Check the contactor frame size on its nameplate; if it's S0, S1, S2, or S3, the suppressor clips on directly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1926-1BD00-ZX90","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/3RT1926-1BD00-ZX90 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}}