{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT6NU3800BFF000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT6NU3800BFF000XXX","canonicalUrl":"https://aoctrl.com/abb/XT6NU3800BFF000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT6NU3800BFF000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB XT6N series, XT6NU3800BFF000XXX, molded case circuit breaker, 800 A, 3-pole, TMA trip unit, UL, current lifecycle stage.","salesMarkdown":"It is designed for main feeder or large branch-circuit protection in commercial and industrial power distribution panels, switchboards, and motor control centers where UL-listed interrupting capacity is required. The TMA trip gives you thermal protection for overloads (adjustable) and fixed magnetic pickup for short-circuit events — a common choice for protecting transformers, busways, or high-current feeders where coordination with downstream devices matters. ## What the 800 A rating means for panel integration At 800 A continuous, this breaker demands careful thermal management inside the enclosure. The frame is sized for busbar connection via rear or front terminals; the 3-pole block occupies a standard MCCB cutout for the XT6 footprint. Panel builders should verify that the enclosure's heat dissipation — based on the breaker's published I²R losses at rated current — stays within the cabinet's allowable temperature rise, especially when mounted alongside other high-current devices. The TMA trip unit's thermal adjustment range allows fine-tuning the long-time pickup to match the protected conductor's ampacity without swapping the breaker.","metaTitle":"ABB XT6NU3800BFF000XXX XT6N 800A 3P Molded Case Circuit Brea","metaDescription":"ABB XT6NU3800BFF000XXX XT6N 800A 3P molded case circuit breaker with TMA trip unit, UL listed, current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"title":"XT6NU3800BFF000XXX","description":"XT6N 800 TMA IN=800A 3P F F UL|ABBXT6NU3800BFF000XXX","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/417bfa9ee50fd24c3ebe371335e7a94b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy XT6NU3800BFF000XXX and how is it quoted?","answer":"This MCCB is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"What is the description of XT6NU3800BFF000XXX?","answer":"The manufacturer description is XT6N 800 TMA IN=800A 3P F F UL, indicating an XT6N frame, 800 A rated current, TMA trip unit, 3-pole, with front terminals and UL listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT6NU3800BFF000XXX","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/XT6NU3800BFF000XXX 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}}