{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT4NU3250AFF000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT4NU3250AFF000XXX","canonicalUrl":"https://aoctrl.com/abb/XT4NU3250AFF000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT4NU3250AFF000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB Tmax XT4N, molded case circuit breaker, 250 A, 3-pole, thermal-magnetic fixed trip, frame mount, front flat terminals.","salesMarkdown":"The thermal-magnetic element means it combines a bimetal strip for overload protection (slow response to sustained overcurrent) with a solenoid for short-circuit interruption (instantaneous on high fault current). At 250 A fixed, there's no adjustment range; what you order is what protects the circuit. The 3-pole configuration fits three-phase systems — common for motor loads, distribution panels, and industrial feeders. Frame mounting means it bolts into a panel or switchboard enclosure, not onto a DIN rail; plan for the cutout and bus-bar connections when laying out the gear.","metaTitle":"ABB XT4NU3250AFF000XXX Tmax XT4N 250A 3-Pole Molded Case Bre","metaDescription":"ABB XT4NU3250AFF000XXX Tmax XT4N molded case breaker, 250 A, 3-pole, thermal-magnetic fixed, frame mount. 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":{"Amps":"250","Poles":"3","title":"XT4NU3250AFF000XXX","Mounting":"Frame","description":"Tmax Breaker Frame|Tmax Breaker Frame Size XT4N 250 Thermal Magnetic Fixed 250-2500, 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/0049b67dc7294a748b2323b01e78a246.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy XT4NU3250AFF000XXX and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of XT4NU3250AFF000XXX?","answer":"250 A continuous current, 3 poles, thermal-magnetic fixed trip, frame mount."},{"question":"Will XT4NU3250AFF000XXX drop into a panel specified for XT5NU340ABNF000XXX?","answer":"No — the XT5 frame is physically larger and uses a different mounting footprint. They are not mechanically interchangeable without panel rework."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT4NU3250AFF000XXX","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/XT4NU3250AFF000XXX 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}}