{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A1N040TW-2","brand":"ABB","brandSlug":"abb","productSlug":"A1N040TW-2","canonicalUrl":"https://aoctrl.com/abb/A1N040TW-2","factsUrl":"https://aoctrl.com/api/mcp/products/A1N040TW-2","rawCanonicalId":null},"summary":{"shortDescription":"ABB A1N040TW-2 A1N 100 TMF 40-400 thermal-magnetic motor circuit protector, 40 A continuous, 400 A magnetic trip, ABB brand.","salesMarkdown":"## A1N040TW-2 — thermal-magnetic motor circuit protector, EOL hot The ABB A1N040TW-2 is a thermal-magnetic motor circuit protector from the A1N 100 TMF 40-400 series, rated 40 A continuous with a 400 A magnetic trip threshold. ## What the thermal-magnetic type means for the panel Thermal-magnetic means the device combines a bimetal thermal element for overload protection (the 40 A continuous rating) with a solenoid magnetic element for short-circuit trip (the 400 A threshold). This is a motor circuit protector — it sits between the contactor and the motor, not as a standalone branch-circuit breaker. The A1N 100 frame size indicates the physical envelope; the TMF 40-400 suffix confirms the trip range. In a motor control centre or panel, this unit mounts on DIN rail and coordinates with the upstream short-circuit protective device. The 400 A magnetic trip is instantaneous — it clears a bolted fault before the thermal element responds, protecting the contactor and motor leads. ## Sourcing an EOL-hot ABB part The part is available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ. No pin-compatible drop-in replacement from the same family is documented — a functional replacement would require reviewing the motor FLA and coordination study. The ABB brand and the A1N 100 TMF 40-400 description confirm this is a genuine ABB-manufactured unit, not a third-party relabel. Compliance documentation (RoHS, REACH, CE) is per ABB's original release — the buyer should verify the specific lot's declaration at order.","metaTitle":"ABB A1N040TW-2 A1N 100 TMF 40-400, Thermal Magnetic","metaDescription":"ABB A1N040TW-2 thermal-magnetic motor circuit protector, 40 A continuous, 400 A magnetic trip. EOL hot — sourced to order via independent channels.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Type":"Thermal Magnetic","title":"A1N040TW-2","description":"ABB A1N040TW-2 A1N 100 TMF 40-400 2|ABB A1N040TW-2 A1N 100 TMF 40","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$215.79","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/318a9dd2f6b99d9a36bc8132c1dccea9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the A1N040TW-2's type and what does it protect?","answer":"It is a thermal-magnetic motor circuit protector. The thermal element handles overloads up to 40 A continuous; the magnetic element trips instantaneously at 400 A to clear short circuits. It protects the motor branch circuit, not the main feeder."},{"question":"How is the A1N040TW-2 quoted for volume purchases?","answer":"Quoted to order against the BOM quantity through independent distribution. Lead time and volume pricing are confirmed at RFQ — no stock-holding claim is made here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/A1N040TW-2","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/A1N040TW-2 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}}