{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S281UC-K6","brand":"ABB","brandSlug":"abb","productSlug":"S281UC-K6","canonicalUrl":"https://aoctrl.com/abb/S281UC-K6","factsUrl":"https://aoctrl.com/api/mcp/products/S281UC-K6","rawCanonicalId":null},"summary":{"shortDescription":"ABB S281UC-K6, 1-pole miniature circuit breaker, 6 A, Trip Curve K, 250 VDC, DIN rail mount.","salesMarkdown":"## What the ratings mean for fit The S281UC-K6: The 6 A rating is the continuous current the breaker carries without tripping. Trip Curve K means the magnetic trip operates at 8–12× rated current — designed for loads with moderate inrush like DC motor circuits, solenoids, and transformer primaries where a standard C-curve might nuisance-trip but a D-curve would be too slow for fault protection. The 250 VDC rating covers most industrial DC bus voltages (common 110 V, 220 V, 250 V nominal systems); verify your system voltage does not exceed this. ## Integration into the panel Snaps onto standard 35 mm DIN rail. Single-pole width (roughly 18 mm per module) means it occupies one position in a distribution board or control panel. Wire termination is via tunnel terminals; strip length and torque follow the standard ABB S200-series practice. ## Lifecycle and sourcing reality Lifecycle stage is marked as current — this is an active, in-production catalog number. No LTB or phase-out notice applies. For procurement, the part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time. If you are freezing a BOM, this part has no imminent obsolescence risk.","metaTitle":"ABB S281UC-K6 MCB, 1-Pole 6A Trip Curve K, 250 VDC","metaDescription":"ABB S281UC-K6 miniature circuit breaker, 6 A, 1-pole, Trip Curve K, DIN rail mount, 250 VDC rated. Current lifecycle stage. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Amps":"6","Type":"Trip Curve K","Poles":"1","Mounting":"DIN Rail","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$171.07","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S281UC-K6/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy S281UC-K6 and how do I get a price?","answer":"S281UC-K6 is sourced and quoted to order against an RFQ through independent distribution channels. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is S281UC-K6's listed amps and trip curve?","answer":"Rated at 6 A continuous with a Trip Curve K characteristic — magnetic trip at 8–12× rated current, suited for inductive DC loads with moderate inrush."},{"question":"Will S281UC-K6 drop into a panel specified around S201M-C10 without rewiring?","answer":"Mechanically yes — both mount on standard DIN rail and occupy one module width. But electrically no: the S281UC-K6 is 6 A Curve K at 250 VDC, while the S201M-C10 is 10 A Curve C at 60 VDC. The different trip curve and voltage rating mean the circuit protection design must be re-evaluated."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S281UC-K6","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/S281UC-K6 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}}