{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202MUC-K3","brand":"ABB","brandSlug":"abb","productSlug":"S202MUC-K3","canonicalUrl":"https://aoctrl.com/abb/S202MUC-K3","factsUrl":"https://aoctrl.com/api/mcp/products/S202MUC-K3","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200MUC series, S202MUC-K3, 2-pole miniature circuit breaker, Trip Curve K, 3 A, 277 VAC / 500 VDC, 6 kA interrupting rating, DIN rail mount.","salesMarkdown":"The 277 VAC / 500 VDC voltage rating covers common single-phase line-to-neutral (277/480Y) and DC control bus applications. The 2-pole width (2 modules, 36 mm) fits a standard distribution board or sub-panel. Terminal design accepts up to 25 mm² conductor — common for the 3 A branch feed. No special air-gap or segregation required for this interrupting rating in a typical IP2X enclosure. The closest functional peer is the S202M-C10 — same 2-pole DIN-rail footprint, same 277 VAC / 6 kA interrupting rating. The difference is trip curve and amp rating: the S202MUC-K3 uses Curve K (8–12× In, 3 A) for inductive loads, while the S202M-C10 uses Curve C (5–10× In, 10 A) for general-purpose or resistive loads. The S202MUC-K3 also carries a higher DC voltage rating (500 VDC vs 125 VDC) and 10 kA DC interrupting capacity — so it handles DC control circuits the C10 cannot. If the panel was specified around the S202M-C10, swapping to the S202MUC-K3 requires verifying the load current (3 A vs 10 A) and confirming the trip curve matches the load type. The physical mounting is identical — no rewiring needed for the DIN-rail footprint.","metaTitle":"ABB S202MUC-K3 S200MUC MCB, 2P K 3A, 277VAC/500VDC","metaDescription":"ABB S202MUC-K3 miniature circuit breaker, 2-pole, Trip Curve K, 3 A, 277 VAC / 500 VDC, 6 kA interrupting capacity. Current lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Amps":"3","Type":"Trip Curve K","Poles":"2","Mounting":"DIN Rail","Volts AC":"277","Volts DC":"500","lifecycle_stage":"current","Interrupt Rating AC":"6 kA","Interrupt Rating DC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$224.33","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/39652116766da3ee5315811be22c15e6.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S202MUC-K3/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for S202MUC-K3?","answer":"The S202MUC-K3 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is S202MUC-K3's listed amps and trip curve?","answer":"The S202MUC-K3 is rated 3 A with Trip Curve K (magnetic trip at 8–12× rated current)."},{"question":"Will S202MUC-K3 drop into a panel specified around S202M-C10 without rewiring?","answer":"Yes, the S202MUC-K3 shares the same 2-pole DIN-rail footprint as the S202M-C10, so physical mounting is identical. However, verify the load current (3 A vs 10 A) and trip curve (K vs C) match the circuit requirements before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202MUC-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/S202MUC-K3 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}}