{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A2N125TW","brand":"ABB","brandSlug":"abb","productSlug":"A2N125TW","canonicalUrl":"https://aoctrl.com/abb/A2N125TW","factsUrl":"https://aoctrl.com/api/mcp/products/A2N125TW","rawCanonicalId":null},"summary":{"shortDescription":"ABB A2N125TW Contactors, molded case circuit breaker, 125 A, 3-pole, 240 V AC/DC, 25 kAIC, thermal-magnetic trip, panel mount.","salesMarkdown":"## 125 A, 3-pole thermal-magnetic MCCB for 240 V distribution The ABB A2N125TW is a 125 A, 3-pole molded case circuit breaker rated for 240 V AC/DC circuits, with a 25 kA interrupting capacity at 240 V. The thermal-magnetic trip unit provides overload protection via a bimetal element and short-circuit protection via a solenoid — no electronic trip board to fail or need programming. Panel-mount design fits standard distribution board cutouts; the A2 frame is the smallest ABB MCCB frame, saving space in a crowded panel. The 25 kAIC at 240 V means it can safely clear a bolted fault on a transformer secondary or a large feeder without requiring an upstream current-limiting fuse. ## End-of-life sourcing — what the EOL-hot status means for your BOM For a BOM freeze or a line-down replacement, the page's value is the cross-reference to available inventory. The 125 A, 3-pole, 240 V AC/DC rating and thermal-magnetic trip are the fit criteria — confirm the frame size (A2) and panel cutout match the existing installation before committing. ## Panel integration — mounting and wiring checklist Panel mount — the breaker bolts directly to the enclosure backplate or a mounting pan. No DIN rail adapter; plan for fixed lug connections. The A2 frame accepts line and load lugs up to the rated ampacity; verify the lug wire range against the existing conductor size. Three-pole configuration means it switches all three phases simultaneously — suitable for three-phase motor circuits, feeder protection, or as a main disconnect in a 240 V panel. The 240 V AC/DC rating covers both single-phase and three-phase 240 V systems, plus DC control circuits at the same voltage.","metaTitle":"ABB A2N125TW Contactors, 125 A, 3-Pole, 240 V AC/DC","metaDescription":"ABB A2N125TW molded case circuit breaker, 125 A, 3-pole, 240 V AC/DC, 25 kAIC, thermal-magnetic trip. End-of-life status — sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Amps":"125","Poles":"3","title":"A2N125TW","Mounting":"Panel","Volts AC":"240","Volts DC":"240","description":"Breaker, 125A, 3P, 240V AC/DC, 25 kAIC, Thermal-Magnetic.|125A Amp. 3-Pole. Frame: A2. Molded Case Circuit Breaker, 25 kAIC, 240V AC/DC, Fixed Thermal-Magnetic Trip.","lifecycle_stage":"eol_hot","Interrupt Rating AC":"25 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$590.83","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d8458a01fc455493fc51f711e0f4bac8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key ratings for the A2N125TW?","answer":"125 A continuous current, 3-pole, 240 V AC/DC voltage rating, 25 kA interrupting capacity at 240 V. Thermal-magnetic trip mechanism. Panel mount."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/A2N125TW","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/A2N125TW 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}}