{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203-C63","brand":"ABB","brandSlug":"abb","productSlug":"S203-C63","canonicalUrl":"https://aoctrl.com/abb/S203-C63","factsUrl":"https://aoctrl.com/api/mcp/products/S203-C63","rawCanonicalId":null},"summary":{"shortDescription":"ABB S203-C63 miniature circuit breaker, 63 A, 3-pole, C-trip curve, 480Y/277 VAC, 6 kA interrupting, DIN rail mount.","salesMarkdown":"## Panel fit and protection profile The ABB S203-C63 is a 3-pole miniature circuit breaker rated 63 A with a C-trip curve, designed for DIN-rail mounting in distribution boards and sub-panels. The C-curve trips between 5 and 10 times rated current, so it handles moderate inrush from motor starters and small transformers without nuisance opening while still clearing short circuits quickly. The 6 kA interrupting rating at 277 VAC per pole means it can safely break fault currents up to that level — adequate for most commercial and light industrial panelboards where the prospective fault current stays under that threshold.","metaTitle":"S203-C63 ABB Miniature Circuit Breaker, 63A 3P C-Curve DIN R","metaDescription":"ABB S203-C63 miniature circuit breaker, 63 A, 3-pole, C-trip curve, 480Y/277 VAC, 6 kA interrupting. DIN rail mount. Current lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Amps":"63","Type":"Trip Curve C","Poles":"3","title":"S203-C63","Mounting":"DIN Rail","Volts AC":"277","description":"Circuit Breaker, Miniature, DIN Rail Mount, 63A, 3P, 480Y/277VAC|Circuit Breaker, Miniature, DIN Rail Mount, 63 Amp, 3 Pole, 480Y/277 Volt AC, C Trip","lifecycle_stage":"current","Interrupt Rating AC":"6 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2a610815777886d9963a72ff3a7ed264.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is S203-C63's interrupting rating?","answer":"The S203-C63 has a 6 kA interrupting rating at 277 VAC per pole, which defines the maximum fault current it can safely clear."},{"question":"What does the C-trip curve mean for this breaker?","answer":"The C-trip curve means the breaker's magnetic trip operates between 5 and 10 times rated current (315 to 630 A for this 63 A unit), making it suitable for circuits with moderate inrush loads like small motors or transformers."},{"question":"Where can I buy the S203-C63?","answer":"This part 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 commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203-C63","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-C63 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}}