{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT4LU3250AFF000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT4LU3250AFF000XXX","canonicalUrl":"https://aoctrl.com/abb/XT4LU3250AFF000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT4LU3250AFF000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB XT4LU3250AFF000XXX, XT4L series, 250 A TMF molded case circuit breaker (MCCB), current lifecycle stage.","salesMarkdown":"The TMF designation means the thermal and magnetic pickup settings are factory-fixed — no field-adjustable dials for the overload or short-circuit thresholds. This is a common choice for dedicated motor or feeder circuits where coordination studies have already locked in the trip curve, and you want to avoid an accidental setting change during maintenance.","metaTitle":"ABB XT4LU3250AFF000XXX XT4L 250 A TMF Molded Case Circuit Br","metaDescription":"ABB XT4LU3250AFF000XXX XT4L 250 A TMF MCCB. Lifecycle stage: current. Sourced to order. Request a quote for availability and pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2660d129cad2c94013a10286d73e3537.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/XT4LU3250AFF000XXX/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the XT4LU3250AFF000XXX and get a price?","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 price and lead time."},{"question":"What does the 'TMF' in the XT4LU3250AFF000XXX description mean?","answer":"TMF stands for thermal-magnetic fixed trip unit. The overload (thermal) and short-circuit (magnetic) trip settings are factory-set and not field-adjustable. This contrasts with an adjustable electronic trip unit, which allows dialing in different pickup currents and time delays."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT4LU3250AFF000XXX","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/XT4LU3250AFF000XXX 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}}