{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT4HQ3250AFF000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT4HQ3250AFF000XXX","canonicalUrl":"https://aoctrl.com/abb/XT4HQ3250AFF000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT4HQ3250AFF000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB Tmax XT4 molded case circuit breaker, 250 A, 3-pole, 480 VAC, 65 kAIC at 600 VAC, panel mount.","salesMarkdown":"## Rated 250 A continuous — what that means for the panel That 250 A figure is the thermal-magnetic trip rating — the breaker carries that current indefinitely at 40 °C ambient without nuisance tripping, and the magnetic short-time pickup clears bolted faults fast enough to keep downstream components out of their damage curves. On a 480 VAC distribution bus, this MCCB handles feeder or large motor branch circuits where the load current sits at or below 250 A. ## 65 kAIC at 600 V — interrupting capacity you can count on Rated 65 kAIC at 600 VAC, this breaker interrupts prospective fault currents up to 65,000 A without external fuses or current-limiting reactors. That's a high-level SCCR for a 250 A frame — it means the breaker can be applied on utility-side transformers or large motor starters where available fault current is stiff. The 65 kAIC rating holds at 600 V, so on a 480 V system the margin only improves. No derating needed for most industrial service-entrance or distribution panel positions. ## Panel mount — fits the cutout, wires up clean Panel mount form factor — no DIN-rail adapter needed. The breaker bolts directly into the enclosure backplate with four screws. Line and load lugs accept copper or aluminum conductors sized for 250 A (typically 4/0 AWG to 300 kcmil range, depending on lug kit). Terminal torque values are stamped on the breaker nameplate. The rotary handle mechanism is standard on the XT4 frame; it extends through the panel door with a corresponding cutout template. Wires up clean because the lug wells are aligned and the arc-chamber vents are rearward — no gas blow directed at adjacent wiring.","metaTitle":"ABB XT4HQ3250AFF000XXX Tmax XT4 MCCB, 250 A, 3-Pole, 65 kAIC","metaDescription":"ABB Tmax XT4 molded case circuit breaker, 250 A, 3-pole, 480 VAC, 65 kAIC at 600 V. Panel mount. 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":"250","Poles":"3","title":"XT4HQ3250AFF000XXX","Mounting":"Panel","Volts AC":"480","description":"Breaker, Molded Case, 250A, 3P, 600V, 65kAIC|Breaker, Tmax, Molded Case, 250 Amp, 3-Pole, 600 Volt AC, 65 kAIC","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4b75993a30352b8d88afc974051d104f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy XT4HQ3250AFF000XXX and how do I get a price?","answer":"The XT4HQ3250AFF000XXX is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is XT4HQ3250AFF000XXX's listed amps and poles?","answer":"Rated 250 A continuous, 3-pole configuration."},{"question":"What is the interrupting rating of this MCCB?","answer":"65 kAIC at 600 VAC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT4HQ3250AFF000XXX","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/XT4HQ3250AFF000XXX 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}}