{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT1NU4040AAA000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT1NU4040AAA000XXX","canonicalUrl":"https://aoctrl.com/abb/XT1NU4040AAA000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT1NU4040AAA000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB XT1N series, molded case circuit breaker, order code XT1NU4040AAA000XXX, 125 A frame, TMF 40-500 trip unit, 4-pole, UL/CSA.","salesMarkdown":"The 4-pole configuration with line/load side lug terminations suits it for three-phase plus neutral applications in panelboards and distribution boards. The description string 'XT1N 125 TMF 40-500 4P FF UL/CSA' decodes to a 125 A frame size with a TMF trip unit adjustable from 40 A to 500 A. The 'FF' indicates fixed thermal and fixed magnetic settings — no field-adjustable dials. The 4-pole version with front-face (FF) terminals is the standard panelboard configuration. The UL/CSA suffix means the breaker carries both UL and CSA certifications, so it meets code requirements in the US and Canada without additional agency marks.","metaTitle":"ABB XT1NU4040AAA000XXX XT1N 125A TMF 40-500 4P, current life","metaDescription":"ABB XT1NU4040AAA000XXX XT1N 125A molded case circuit breaker, TMF 40-500 trip unit, 4-pole. Lifecycle stage current. 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":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/XT1NU4040AAA000XXX/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT1NU4040AAA000XXX","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/XT1NU4040AAA000XXX 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}}