{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT1NU4020AAA000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT1NU4020AAA000XXX","canonicalUrl":"https://aoctrl.com/abb/XT1NU4020AAA000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT1NU4020AAA000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB XT1N series, molded case circuit breaker, 125 A frame, TMF 20-500 A thermal-magnetic trip, 4-pole, front terminals, UL/CSA, order code XT1NU4020AAA000XXX.","salesMarkdown":"The XT1NU4020AAA000XXX: The 125 A frame and TMF 20-500 A trip unit mean this breaker accepts a continuous current rating set between 20 A and 500 A via the interchangeable trip block. The 4-pole configuration handles three-phase plus neutral switching, common in North American panelboards where a switched neutral is required. The front terminals accept standard bus bar or cable connections; verify lug size against your wire range before panel assembly.","metaTitle":"ABB XT1NU4020AAA000XXX XT1N 125A MCCB, TMF 20-500 4P","metaDescription":"ABB XT1NU4020AAA000XXX XT1N 125A molded case circuit breaker, TMF 20-500 trip unit, 4-pole, UL/CSA. 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/XT1NU4020AAA000XXX/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT1NU4020AAA000XXX","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/XT1NU4020AAA000XXX 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}}