{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203MUC-K60","brand":"ABB","brandSlug":"abb","productSlug":"S203MUC-K60","canonicalUrl":"https://aoctrl.com/abb/S203MUC-K60","factsUrl":"https://aoctrl.com/api/mcp/products/S203MUC-K60","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200MUC series, S203MUC-K60, 3-pole miniature circuit breaker, 60 A, Trip Curve K, 277 VAC / 500 VDC, 6 kA interrupting capacity AC, DIN rail mount.","salesMarkdown":"That's higher than Curve C (5–10×) but lower than Curve Z (2–3×), so it's a good fit for motor branch circuits where you need to ride through startup current without nuisance tripping. On the DC side, the 10 kA interrupting capacity at 500 VDC is notably higher than the AC rating. That's because DC arcs are harder to extinguish — the breaker's arc chamber is designed for DC interruption, so it's suitable for 500 VDC battery banks, UPS systems, or solar combiner boxes where the string voltage hits that level. ## Where it goes in the panel Three-pole means it occupies three module widths (about 54 mm total). The S200MUC series uses tunnel terminals accepting up to 35 mm² conductor — common for 60 A feeder circuits. Wire the line side from the busbar or upstream breaker, load side to the motor contactor or distribution block.","metaTitle":"ABB S203MUC-K60 MCB, 60A, 3P, Curve K, DIN Rail","metaDescription":"ABB S203MUC-K60 S200MUC series MCB, 60 A, 3-pole, Trip Curve K, 277 VAC / 500 VDC, 6 kA interrupting capacity AC. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Amps":"60","Type":"Trip Curve K","Poles":"3","title":"S203MUC-K60","Mounting":"DIN Rail","Volts AC":"277","Volts DC":"500","description":"ABB S203MUC-K60 MCB S200MUC 3P K 60|ABB S203MUCK60 MCB S200MUC 3P","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/96fee63e6507552129a238441932fbab.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest alternative to S203MUC-K60 in the S200MUC family?","answer":"Within the same S200MUC series, the closest sibling is the S203MUC-K50 (50 A) and S203MUC-K63 (63 A). The K60 sits between them — if you need a slightly lower or higher continuous rating, those are the direct swaps without changing the curve or pole count."},{"question":"Where can I buy S203MUC-K60 and get current pricing?","answer":"The S203MUC-K60 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What compliance documentation does ABB provide for S203MUC-K60?","answer":"ABB typically provides a Declaration of Conformity covering the Low Voltage Directive and relevant EN/IEC standards for the S200MUC series. Specific certifications (UL, CSA, CE, UKCA, EAC) should be verified against the specific variant marking on the device label."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203MUC-K60","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/S203MUC-K60 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}}