{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S801U-K80","brand":"ABB","brandSlug":"abb","productSlug":"S801U-K80","canonicalUrl":"https://aoctrl.com/abb/S801U-K80","factsUrl":"https://aoctrl.com/api/mcp/products/S801U-K80","rawCanonicalId":null},"summary":{"shortDescription":"ABB S801U-K80, 1-pole miniature circuit breaker, 80 A, Trip Curve K, 240 VAC, 25 kA interrupting rating, DIN rail mount.","salesMarkdown":"The ABB S801U-K80 is a 1-pole miniature circuit breaker from the S800 series, rated 80 A at 240 VAC with a Trip Curve K characteristic. The 80 A continuous rating sets the thermal-magnetic trip threshold for overload protection; the K curve means the magnetic trip operates between 10x and 14x rated current, which is deliberately higher than a C curve (5x–10x) but lower than a D curve (10x–20x). This makes the K curve a good fit for circuits with moderate inrush — motor starters, transformer primaries, or lighting banks where the starting surge is above a C curve's tolerance but doesn't need the full headroom of a D curve. Snaps onto standard DIN rail — the S800 family uses the same 35 mm profile as the bulk of panel-mounted breakers. Single-pole format means it occupies one module width (roughly 17.5 mm per pole), so a 1-pole unit takes a single 17.5 mm slot. Terminal capacity handles conductors up to 35 mm² for the line and load sides, per the S800 terminal spec. For a panel OEM or MRO planner, the DIN-rail footprint and single-pole layout let you swap this into an existing S800 or compatible rail without re-drilling or re-wiring the backplane.","metaTitle":"ABB S801U-K80 Mini Circuit Breaker, 1-Pole, 80 A, K Curve","metaDescription":"ABB S801U-K80 miniature circuit breaker, 1-pole, 80 A, Trip Curve K, 240 VAC, 25 kA interrupting rating. DIN rail mount. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Amps":"80","Type":"Trip Curve K","Poles":"1","title":"S801U-K80","Mounting":"DIN Rail","Volts AC":"240","description":"Mini Circuit Breaker S800 1 Pole K 80 Amp|ABB 1 Pole, 80 Amps Rated At 240 Vac, Series Miniature Circuit Breaker With Thermal-magnetic Trip Device, K Trip Curve, And 50ka Interrupt Current Rating","lifecycle_stage":"current","Interrupt Rating AC":"25 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$234.98","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c501d2a150406dafc48bd8e8d0d657f3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the interrupting rating of the S801U-K80?","answer":"25 kA at 240 VAC. That's the maximum fault current the breaker can safely interrupt under short-circuit conditions at its rated voltage."},{"question":"Where can I buy the S801U-K80?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here."},{"question":"What does Trip Curve K mean on this breaker?","answer":"The magnetic trip operates between 10x and 14x rated current (80 A), so the instantaneous trip point is between 800 A and 1120 A. That's higher than a C curve (5x–10x) and lower than a D curve (10x–20x), making it suitable for circuits with moderate inrush like motor starters or transformer primaries."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S801U-K80","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/S801U-K80 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}}