{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S801S-K25","brand":"ABB","brandSlug":"abb","productSlug":"S801S-K25","canonicalUrl":"https://aoctrl.com/abb/S801S-K25","factsUrl":"https://aoctrl.com/api/mcp/products/S801S-K25","rawCanonicalId":null},"summary":{"shortDescription":"ABB S800S series, S801S-K25, 1-pole miniature circuit breaker, Trip Curve K, 25 A, 230 VAC, 50 kA interrupting rating, DIN rail mount.","salesMarkdown":"That K-curve means it's designed for inductive loads — motors, transformers, solenoid valves — where the inrush current is higher than a resistive load but not as extreme as a motor-start. The magnetic trip threshold sits between 8 and 12 times rated current, so it holds through a motor's starting surge but clears a hard fault fast. The 50 kA interrupting rating at 230 VAC is the headline number here. Most 1-pole MCBs in this form factor top out at 6–10 kA; this one handles an order of magnitude more. Mounting is standard DIN rail (35 mm per EN 60715), so it clips into any panel enclosure. The 1-pole form factor means it occupies one module width — roughly 17.5 mm — which matters when you're packing 24 circuits into a 600 mm wide cabinet.","metaTitle":"ABB S801S-K25 MCB, 1P K 25A, 50 kA","metaDescription":"ABB S801S-K25 S800S series MCB, 1-pole, Trip Curve K, 25 A, 230 VAC, 50 kA interrupting rating, DIN rail. Current lifecycle stage. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Amps":"25","Type":"Trip Curve K","Poles":"1","Mounting":"DIN Rail","Volts AC":"230","lifecycle_stage":"current","Interrupt Rating AC":"50 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c9e150bd6244812033fab20108965d0a.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S801S-K25/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of S801S-K25?","answer":"The S801S-K25 has a 50 kA interrupting rating at 230 VAC. This is the maximum fault current the breaker can safely clear without damage."},{"question":"Will S801S-K25 drop into a panel specified for S201MUC-K2?","answer":"Yes, both are 1-pole K-curve MCBs on the same DIN-rail footprint. The S801S-K25 is physically interchangeable with the S201MUC-K2 — same module width, same clip. The difference is the S801S-K25 is rated 25 A with 50 kA interrupting, while the S201MUC-K2 is 2 A with 6 kA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S801S-K25","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/S801S-K25 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}}