{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT1NU3125AAA000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT1NU3125AAA000XXX","canonicalUrl":"https://aoctrl.com/abb/XT1NU3125AAA000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT1NU3125AAA000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB Tmax XT1, molded case circuit breaker frame, 125 A, 3-pole, 480 VAC, panel mount, thermal-magnetic fixed trip.","salesMarkdown":"The ABB XT1NU3125AAA000XXX is a Tmax XT1 molded case circuit breaker frame rated 125 A continuous, 3-pole, with a fixed thermal-magnetic trip unit. The 480 VAC rating is the maximum line-to-line voltage the breaker can interrupt; for 480 V delta or 277/480 Y systems this frame covers the standard distribution voltage. Panel-mount construction — the breaker frame bolts into a switchboard or panel enclosure, not a DIN rail. The front flat terminals accept standard bus bar or cable lugs. In a retrofit or panel build, verify the mounting footprint matches the existing cutout; the Tmax XT1 frame has a specific bolt-hole pattern that differs from older ABB SACE or other manufacturer frames. The 3-pole configuration covers three-phase loads — motors, pumps, compressors, or distribution feeders. The fixed 125 A thermal-magnetic trip provides short-circuit and overload protection in one device. For selective coordination studies, the Tmax XT1 series has published I²t let-through curves; request those curves from the manufacturer or distributor when engineering a coordinated distribution system.","metaTitle":"ABB XT1NU3125AAA000XXX Molded Case Breaker, 125A 3P 480V","metaDescription":"ABB XT1NU3125AAA000XXX molded case circuit breaker, 125 A, 3-pole, 480 VAC, panel mount. Current production. 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":{"Amps":"125","Poles":"3","title":"XT1NU3125AAA000XXX","Mounting":"Panel","Volts AC":"480","description":"Breaker Frame, 125A, Molded Case, Breaker, 125A, 3P, 600VAC|Tmax Breaker Frame Size XT1N 125 Thermal Magnetic Fixed 125-500, 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/588949ba30b3c8750a94bf7ccd4598d3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy XT1NU3125AAA000XXX?","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 delivery window."},{"question":"What are the key ratings of XT1NU3125AAA000XXX?","answer":"Rated 125 A continuous, 3-pole, 480 VAC maximum, with a fixed thermal-magnetic trip. Panel mount construction with front flat terminals."},{"question":"What compliance documentation does ABB provide for this breaker?","answer":"ABB typically provides UL, CSA, and CE certifications for the Tmax XT1 series. Specific documentation (RoHS, REACH, UL file number) is available on request at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT1NU3125AAA000XXX","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/XT1NU3125AAA000XXX 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}}