{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT1NU3040AAA0A0XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT1NU3040AAA0A0XXX","canonicalUrl":"https://aoctrl.com/abb/XT1NU3040AAA0A0XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT1NU3040AAA0A0XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB, Tmax XT1 series, molded case circuit breaker, XT1NU3040AAA0A0XXX, 40 A, 3-pole, 480 VAC, 600Y/347VAC, 18 kAIC, panel mount.","salesMarkdown":"The ABB XT1NU3040AAA0A0XXX is a Tmax XT1 molded case circuit breaker rated 40 A continuous, 3-pole, with a 600Y/347 VAC maximum voltage and an interrupting capacity of 18 kAIC. Panel-mounted with front flat terminals for straightforward bus or cable connections in a distribution panel. ## Ratings and application context The 40 A rating on the XT1N frame means this breaker is sized for feeder or branch circuits drawing up to that continuous current. The 600Y/347 VAC rating confirms suitability for 480Y/277 V wye systems, common in North American lighting and distribution panels. Thermal-magnetic trip gives you a fixed thermal element for overload protection and a magnetic element for short-circuit response — no adjustment, no calibration drift over time. For a panel OEM or MRO planner, that means one less variable in the coordination study.","metaTitle":"ABB XT1NU3040AAA0A0XXX Molded Case Breaker, 40A 3P 480V","metaDescription":"ABB XT1NU3040AAA0A0XXX molded case circuit breaker, 40A, 3-pole, 600Y/347VAC, 18kAIC. 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":"40","Poles":"3","Mounting":"Panel","Volts AC":"480","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c66091011adc64742a8797bf709efcb9.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/XT1NU3040AAA0A0XXX/alternatives.json"},"ai":{"faq":[{"question":"What is XT1NU3040AAA0A0XXX's listed amps and poles?","answer":"The breaker is rated 40 A continuous with 3 poles, suitable for three-phase circuits up to that current."},{"question":"Where can I buy XT1NU3040AAA0A0XXX and get current pricing?","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 quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT1NU3040AAA0A0XXX","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/XT1NU3040AAA0A0XXX when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}