{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203-K60","brand":"ABB","brandSlug":"abb","productSlug":"S203-K60","canonicalUrl":"https://aoctrl.com/abb/S203-K60","factsUrl":"https://aoctrl.com/api/mcp/products/S203-K60","rawCanonicalId":null},"summary":{"shortDescription":"ABB S203-K60 miniature circuit breaker, 3-pole, K-curve, 60 A, 277 VAC, 10 kA interrupting capacity, DIN rail mount.","salesMarkdown":"## 60 A, K-curve, 3-pole MCB for motor and inductive loads The K-curve means it tolerates the inrush of motor and transformer loads without nuisance tripping — the magnetic trip operates between 8 and 12 times rated current, so a 60 A motor start pulling 480–720 A momentarily won't drop the circuit. Interrupting capacity is 10 kA at 277 VAC, which covers most industrial panel fault levels. ## DIN-rail integration The 3-pole footprint occupies three modular units (17.5 mm per pole). Terminal torque and wire size follow the ABB S200-series standard — no special tooling needed.","metaTitle":"ABB S203-K60 MCB, 60A 3P K-Curve 277VAC DIN Rail","metaDescription":"ABB S203-K60 3-pole miniature circuit breaker, 60 A, K-curve, 277 VAC, 10 kA interrupting capacity. DIN rail mount. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Amps":"60","Type":"Trip Curve K","Poles":"3","Mounting":"DIN Rail","Volts AC":"277","lifecycle_stage":"current","Interrupt Rating AC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$22.23","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/932032f8337bfb883cdebdd016d468a8.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S203-K60/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of S203-K60?","answer":"The S203-K60 has a 10 kA interrupting capacity at 277 VAC, suitable for most industrial panel fault levels."},{"question":"Will S203-K60 drop into a panel specified around S203-C8 without rewiring?","answer":"The S203-K60 shares the same 3-pole DIN-rail footprint and 277 VAC rating as the S203-C8. The difference is the trip curve — K vs C. If the panel was designed for C-curve (magnetic trip 5–10x In), swapping to K-curve (8–12x In) may change nuisance-trip behavior on certain loads, but the mechanical fit and wiring are identical."},{"question":"Where can I buy S203-K60?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203-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/S203-K60 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}}