{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT1NU3040AFF000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT1NU3040AFF000XXX","canonicalUrl":"https://aoctrl.com/abb/XT1NU3040AFF000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT1NU3040AFF000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB Tmax XT1N frame breaker, 125 A thermal-magnetic fixed trip, 3-pole, frame mount, front flat terminals.","salesMarkdown":"The ABB XT1NU3040AFF000XXX is a Tmax XT1N frame-size molded-case circuit breaker rated 125 A continuous, with a fixed thermal-magnetic trip unit adjustable from 40 to 500 A. The 3-pole configuration suits three-phase distribution and motor branch circuits. Frame mounting means it bolts into a panel or switchboard — not a DIN-rail snap-on — so plan for drilling and bus-bar connections. The front flat terminals accept standard cable lugs or bus bars, typical for main or feeder breaker positions in industrial power panels. ## Integration context Mounts in a panel via its frame footprint — not a plug-in or DIN-rail base. The fixed front flat terminals simplify bus-bar or cable-lug connections for main or feeder positions.","metaTitle":"ABB XT1NU3040AFF000XXX Tmax Breaker Frame, 125 A, 3-Pole","metaDescription":"ABB XT1NU3040AFF000XXX Tmax XT1N frame breaker, 125 A thermal-magnetic, 3-pole, fixed front flat terminals. 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":"XT1NU3040AFF000XXX","Mounting":"Frame","description":"Tmax Breaker Frame|Tmax Breaker Frame Size XT1N 125 Thermal Magnetic Fixed 40-500, 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/163aa01764f6a8d76933d418f9c3c289.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy XT1NU3040AFF000XXX and how do I get a price?","answer":"It is sourced 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 is XT1NU3040AFF000XXX's listed amps (125) on this component line?","answer":"The listed continuous current rating is 125 A. The fixed thermal-magnetic trip unit is adjustable from 40 to 500 A, so the 125 A frame can be set lower for cable or load protection."},{"question":"What is XT1NU3040AFF000XXX's listed poles (3) on this component line?","answer":"It is a 3-pole breaker, meaning it switches and protects all three phases of a three-phase circuit."},{"question":"What compliance documentation does this brand provide for XT1NU3040AFF000XXX (RoHS, REACH, UL, IEC)?","answer":"ABB typically provides RoHS and REACH declarations, plus UL and IEC certifications for the Tmax XT1N series. Specific documentation for this order code is available upon request with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT1NU3040AFF000XXX","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/XT1NU3040AFF000XXX 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}}