{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203PR-K63","brand":"ABB","brandSlug":"abb","productSlug":"S203PR-K63","canonicalUrl":"https://aoctrl.com/abb/S203PR-K63","factsUrl":"https://aoctrl.com/api/mcp/products/S203PR-K63","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200PR series, S203PR-K63, 3-pole miniature circuit breaker, 63 A, Trip Curve K, 277 VAC, 10 kA interrupting rating, DIN rail mount.","salesMarkdown":"## 63 A, Curve K — the inductive-load breaker for 277 VAC panels The ABB S203PR-K63 is a 3-pole miniature circuit breaker from the S200PR series, rated 63 A continuous with a Trip Curve K characteristic and a 10 kA interrupting capacity at 277 VAC. Curve K means the magnetic trip threshold sits between 8× and 12× rated current — designed for inductive loads like motors, transformers, and solenoid banks where the inrush spike would nuisance-trip a B-curve but the short-circuit protection still needs to be faster than a Z-curve. The 10 kA SCCR covers most commercial and light-industrial panel fault levels at 277/480 VAC wye. The manufacturer provides RoHS and REACH declarations with the shipment; CE marking covers the EU low-voltage directive. No UL listing is on record for this exact variant, so verify jurisdictional acceptance if your panel requires UL 489.","metaTitle":"ABB S203PR-K63 MCB, 63 A, 3-Pole, Curve K, DIN Rail","metaDescription":"ABB S203PR-K63 MCB S200PR RTT, 63 A, 3-pole, Trip Curve K, 277 VAC, 10 kA interrupting rating. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Amps":"63","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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6d4d9835b3cf720f25b3045c3171314f.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S203PR-K63/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of S203PR-K63?","answer":"63 A continuous, 3-pole, Trip Curve K, rated 277 VAC with a 10 kA interrupting capacity. Mounts on DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203PR-K63","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/S203PR-K63 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}}