{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1936-1ER02-ZX90","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1936-1ER02-ZX90","canonicalUrl":"https://aoctrl.com/siemens/3RT1936-1ER02-ZX90","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1936-1ER02-ZX90","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1936-1ER02-ZX90, surge suppressor, diode combination without LED, 24 V DC, for mounting onto contactors Size S2 and S3, multi-unit packaging of 5 units with connection cable.","salesMarkdown":"The 3RT1936-1ER02-ZX90 is a SIRIUS surge suppressor — a diode combination without LED, rated for 24 V DC, designed to clip the inductive kickback from a contactor coil when the DC supply is switched off. It mounts onto SIRIUS contactors in Size S2 and S3 frames. ## Where it goes and why it matters This suppressor snaps onto the coil terminals of a Size S2 or S3 contactor inside a control panel. On a DC-switched coil, the diode provides a freewheeling path that prevents the voltage spike from reaching the PLC output or DC supply — a standard fix-it-where-it-sits solution when a line-down report flags a blown 24 V output card.","metaTitle":"3RT1936-1ER02-ZX90 SIRIUS surge suppressor, 24 V DC, for Siz","metaDescription":"Siemens SIRIUS 3RT1936-1ER02-ZX90 surge suppressor, 24 V DC diode combination without LED. Phased-out; successor is SIRIUS 3RT2. Sourced to order against RFQ.","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=433521&mlfb=3RT1936-1ER02-ZX90","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1936-1ER02-ZX90/alternatives.json"},"ai":{"faq":[{"question":"What is the lifecycle status of this component?","answer":"The lifecycle stage is listed as 'current' but the product description states it is phased-out with a known successor."},{"question":"What brand is this part under?","answer":"Siemens SIRIUS."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1936-1ER02-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/3RT1936-1ER02-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}}