{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT4HU3125BFF000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT4HU3125BFF000XXX","canonicalUrl":"https://aoctrl.com/abb/XT4HU3125BFF000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT4HU3125BFF000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB XT4HU3125BFF000XXX, XT4H series, molded case circuit breaker, 250 TMA trip unit, lifecycle stage current.","salesMarkdown":"This is the fixed thermal-magnetic version, meaning the overload and short-circuit protection curves are set by the trip unit's rating and adjustments, not by an electronic trip module. ## What the 250 TMA rating means for fit The 250 TMA designation indicates a 250 A frame size with a thermal-magnetic trip unit. The thermal element provides overload protection (inverse-time curve), while the magnetic element provides instantaneous short-circuit protection. This is a standard choice for feeder circuits or large motor branch circuits where coordination with downstream devices is required. The XT4H series is designed for high breaking capacity applications, so the 250 A frame typically handles fault currents up to 50 kA at 415 VAC, though the exact SCCR depends on the specific interrupting rating of this variant — verify against the nameplate for your installation.","metaTitle":"ABB XT4HU3125BFF000XXX XT4H 250TMA Molded Case Circuit Break","metaDescription":"ABB XT4HU3125BFF000XXX XT4H 250TMA molded case circuit breaker, lifecycle stage current. Sourced to order against RFQ. Confirm availability and pricing at quote time.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"title":"XT4HU3125BFF000XXX","description":"ABB XT4HU3125BFF000XXX XT4H 250TMA|ABB XT4HU3125BFF000XXX XT4H 2","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a38c4236165c3b6c8e5dd514d0188fc2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Who supplies XT4HU3125BFF000XXX and how is it quoted for volume purchases?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Volume pricing and availability are confirmed at quote time — no stock or price figures are carried on this listing."},{"question":"What is XT4HU3125BFF000XXX's listed description?","answer":"The listed description is ABB XT4HU3125BFF000XXX XT4H 250TMA, indicating it is an XT4H series molded case circuit breaker with a 250 A thermal-magnetic adjustable trip unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT4HU3125BFF000XXX","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/XT4HU3125BFF000XXX 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}}