{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XT1SU4020AFF000XXX","brand":"ABB","brandSlug":"abb","productSlug":"XT1SU4020AFF000XXX","canonicalUrl":"https://aoctrl.com/abb/XT1SU4020AFF000XXX","factsUrl":"https://aoctrl.com/api/mcp/products/XT1SU4020AFF000XXX","rawCanonicalId":null},"summary":{"shortDescription":"ABB XT1S series, XT1SU4020AFF000XXX, 4-pole molded case switch, TMF trip, current lifecycle stage.","salesMarkdown":"Its 4-pole configuration makes it suitable for three-phase plus neutral switching in industrial control panels where full disconnection of all live conductors is required. ## What the 4-pole rating means for fit The 4-pole rating governs the physical footprint and wiring scheme: it occupies a wider DIN-rail slot than a 3-pole equivalent and requires neutral conductor termination through the switch. In a panel layout, verify that the gland plate and wireway have clearance for the fourth pole's outgoing cable, especially when using larger conductor sizes for the neutral.","metaTitle":"ABB XT1SU4020AFF000XXX XT1S 125 TMF, 4-pole","metaDescription":"ABB XT1SU4020AFF000XXX XT1S 125 TMF molded case switch, 4 poles, current lifecycle stage. 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":{"Poles":"4","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e977fa59cd1644ee138b0a806d0c3e86.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/XT1SU4020AFF000XXX/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy XT1SU4020AFF000XXX and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the listed poles (4) on XT1SU4020AFF000XXX?","answer":"The part is a 4-pole molded case switch, meaning it switches three phases plus neutral in a single enclosure."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/XT1SU4020AFF000XXX","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/XT1SU4020AFF000XXX 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}}