{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S201MUC-K3","brand":"ABB","brandSlug":"abb","productSlug":"S201MUC-K3","canonicalUrl":"https://aoctrl.com/abb/S201MUC-K3","factsUrl":"https://aoctrl.com/api/mcp/products/S201MUC-K3","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200MUC series, miniature circuit breaker (MCB), 1-pole, Trip Curve K, 3 A, 277 VAC / 250 VDC, 6 kA / 10 kA interrupting capacity, DIN-rail mount.","salesMarkdown":"That K curve means it holds through short-duration inrush up to 8–12× rated current — typical for inductive loads like contactor coils, solenoid valves, or small motor starters — before tripping magnetically. On the AC side it interrupts faults up to 6 kA at 277 V; on the DC side, 10 kA at 250 V, which covers most control-circuit and auxiliary-supply fault scenarios in a panel. The DIN-rail footprint (standard 1-module width) drops into any S200-series distribution board or enclosure rail without adapters. The 1-pole body occupies one 17.5 mm module — no extra space for neutral switching. Rated for 277 VAC line-to-neutral or 250 VDC control circuits; the 6 kA / 10 kA interrupting capacity provides adequate SCCR headroom for most industrial control panels without cascading upstream breakers. Trip Curve K avoids nuisance tripping on transformer inrush or capacitive loads that a Z-curve might catch, but still clears fast on hard shorts.","metaTitle":"ABB S201MUC-K3 MCB 1P K 3A, 277 VAC / 250 VDC","metaDescription":"ABB S201MUC-K3 miniature circuit breaker, 1-pole, Trip Curve K, 3 A, 277 VAC / 250 VDC, 6 kA / 10 kA interrupting capacity. 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":"3","Type":"Trip Curve K","Poles":"1","title":"S201MUC-K3","Mounting":"DIN Rail","Volts AC":"277","Volts DC":"250","description":"ABB S201MUC-K3 MCB S200MUC 1P K 3A|ABB S201MUCK3 MCB S200MUC 1P","lifecycle_stage":"current","Interrupt Rating AC":"6 kA","Interrupt Rating DC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6a3c28f05fe73e70b99003d9dfb9ffb8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the S201MUC-K3 used for?","answer":"It is a 1-pole miniature circuit breaker with Trip Curve K, rated 3 A, used to protect inductive loads such as contactor coils, solenoid valves, and small motor starters in control panels up to 277 VAC or 250 VDC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S201MUC-K3","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/S201MUC-K3 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}}