{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S801U-K70","brand":"ABB","brandSlug":"abb","productSlug":"S801U-K70","canonicalUrl":"https://aoctrl.com/abb/S801U-K70","factsUrl":"https://aoctrl.com/api/mcp/products/S801U-K70","rawCanonicalId":null},"summary":{"shortDescription":"ABB S801U-K70, S800 series, miniature circuit breaker, 1-pole, Trip Curve K, 70 A, 240 VAC, 25 kA interrupting rating, DIN rail mount.","salesMarkdown":"## 70 A, 1-pole, Trip Curve K — what it means on your panel The ABB S801U-K70 is a 1-pole miniature circuit breaker from the S800 series, rated 70 A at 240 VAC with a 25 kA interrupting capacity. Trip Curve K means it's designed for inductive and motor-starting loads — the magnetic trip point sits higher than a B or C curve, so it won't nuisance-trip on inrush. ## Where it fits — and the one thing that trips people up Curve K breakers are common in control panels feeding contactors, small transformers, or motor circuits where the starting surge exceeds what a C-curve would handle. The catch: a K-curve's magnetic trip is typically 8–12× rated current, so it's not for general-purpose lighting or resistive loads — use it where the load's inrush is known and repeatable.","metaTitle":"ABB S801U-K70 MCB 1P K 70A 240VAC, 25kA","metaDescription":"ABB S801U-K70 miniature circuit breaker, 1-pole, Trip Curve K, 70 A, 240 VAC, 25 kA interrupting rating. Current lifecycle. 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":"70","Type":"Trip Curve K","Poles":"1","title":"S801U-K70","Mounting":"DIN Rail","Volts AC":"240","description":"Abb S801u-k70 Mcb S800 1p K 70a|ABB S801U-K70","lifecycle_stage":"current","Interrupt Rating AC":"25 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f62cb3ad267f3f83abff6169ae881b87.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy S801U-K70 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote — availability and current pricing are confirmed at that time."},{"question":"What is S801U-K70's listed amps and type?","answer":"Rated 70 A, Trip Curve K, 1-pole, 240 VAC, with a 25 kA interrupting capacity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S801U-K70","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-K70 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}}