{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT1SU3045AYD000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT1SU3045AYD000XXX","canonicalUrl":"https://aoctrl.com/abb/XT1SU3045AYD000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT1SU3045AYD000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB, NEXT1S 125 TMF 45-500 3P F F UL/CSA, molded case circuit breaker, 125 A frame, TMF trip unit 45-500 A, 3-pole.","salesMarkdown":"The ABB XT1SU3045AYD000XXX is a 3-pole molded case circuit breaker on the NEXT1S 125 frame, fitted with a TMF (thermal-magnetic fixed) trip unit rated 45-500 A. It's built for UL/CSA-marked distribution panels, motor branch circuits, and feeder protection in industrial and commercial installations where the 125 A frame gives headroom for the 45-500 A trip range. The TMF trip delivers a fixed thermal curve for overloads and a magnetic pickup for short-circuits — no field-adjustable dials, which means the trip setting is locked at the factory and stays consistent across the installed base. The 125 A frame size tells you the breaker's mechanical and thermal capacity, not the trip setting — the TMF trip unit is set at 45-500 A, so you order the exact continuous-current rating that matches your load. That 3-pole configuration covers three-phase circuits; the 'F F' designation indicates fixed front terminals (line and load), which simplifies bus-bar layout and reduces wiring errors compared to plug-in or rear-connection variants. UL/CSA listing means the breaker is accepted for North American panel builds without additional agency review — a time-saver for panel OEMs shipping to US or Canadian sites.","metaTitle":"ABB XT1SU3045AYD000XXX MCCB, 125 A Frame, TMF 45-500 A, 3-Pole","metaDescription":"ABB XT1SU3045AYD000XXX molded case circuit breaker, 125 A frame, TMF trip unit 45-500 A, 3-pole. Current lifecycle. 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/XT1SU3045AYD000XXX/alternatives.json"},"ai":{"faq":[{"question":"What is the trip unit and frame rating on this MCCB?","answer":"It's a 125 A frame with a TMF trip unit rated 45-500 A, 3-pole, fixed front terminals, UL/CSA listed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT1SU3045AYD000XXX","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/XT1SU3045AYD000XXX 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}}