{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT1NU3050AFF000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT1NU3050AFF000XXX","canonicalUrl":"https://aoctrl.com/abb/XT1NU3050AFF000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT1NU3050AFF000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB Tmax XT1N frame, XT1NU3050AFF000XXX, 125 A, 3-pole molded case circuit breaker with thermal-magnetic fixed trip, frame mount, front flat terminals.","salesMarkdown":"The ABB XT1NU3050AFF000XXX is a Tmax XT1N frame molded case circuit breaker rated 125 A, 3-pole, with a fixed thermal-magnetic trip unit adjustable 50-500 A. Frame-mounted with front flat terminals — this is the standard distribution and motor branch-circuit protection package for panel builders and plant electricians. The 125 A rating means it handles feeder circuits and larger motor loads in that range; the fixed thermal-magnetic trip gives you a reliable, no-nonsense overcurrent and short-circuit response curve without electronic adjustment complexity. For a 3-pole configuration on a 480Y/277 V or 208Y/120 V system, that covers feeder circuits, large motor branch circuits, and distribution subpanels. The fixed thermal-magnetic trip (50-500 A range on the magnetic pickup) means the short-circuit response is set at the factory; no field-adjustable electronic trip unit to calibrate. That's fine for standard motor starting and distribution duty where you don't need curve shaping. Frame mounting means it bolts into a switchboard or panel chassis — not a DIN-rail snap-in, so plan your enclosure cutouts and bus connections accordingly. ## Deployment Context Frame-mounted breakers like this one land in industrial switchboards, motor control centers, and distribution panels. The front flat terminals accept standard bus bar or cable lugs — no special adapter kit needed. For a panel OEM or plant electrician, that means straightforward bus connections and a clean layout. The XT1N frame is compact for its rating class, so it fits in tighter panel sections without sacrificing interrupting capacity.","metaTitle":"ABB XT1NU3050AFF000XXX Tmax XT1N Frame, 125 A, 3-Pole, Therm","metaDescription":"ABB XT1NU3050AFF000XXX Tmax XT1N molded case circuit breaker, 125 A, 3-pole, thermal-magnetic fixed trip 50-500 A, frame mount. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Amps":"125","Poles":"3","title":"XT1NU3050AFF000XXX","Mounting":"Frame","description":"Tmax Breaker Frame|Tmax Breaker Frame Size XT1N 125 Thermal Magnetic Fixed 50-500, 3-Pole Fixed+ Front Flat Terminals","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fb79a087783c09e9da9fa9024885bb05.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest alternative to XT1NU3050AFF000XXX in the Tmax family?","answer":"Within the Tmax XT1 frame, the primary alternative would be a version with a different trip type or terminal configuration — for example, an electronic trip unit or rear-connect terminals. The frame size, pole count, and continuous current rating are the main fit parameters; if you need the same 125 A, 3-pole, fixed thermal-magnetic trip with front flat terminals, this is the direct order code. No pin-compatible drop-in exists that changes only the trip curve without also changing the order code."},{"question":"Where can I buy XT1NU3050AFF000XXX?","answer":"Sourced to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead-time commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT1NU3050AFF000XXX","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/XT1NU3050AFF000XXX 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}}