{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203-C50","brand":"ABB","brandSlug":"abb","productSlug":"S203-C50","canonicalUrl":"https://aoctrl.com/abb/S203-C50","factsUrl":"https://aoctrl.com/api/mcp/products/S203-C50","rawCanonicalId":null},"summary":{"shortDescription":"ABB S203-C50, miniature circuit breaker, 3-pole, 50 A, C-trip curve, 277 VAC, 6 kA interrupting capacity, DIN rail mount.","salesMarkdown":"The ABB S203-C50 is a 3-pole miniature circuit breaker rated for 50 A continuous current, with a C-trip curve that provides a moderate inrush tolerance — it holds through the starting surge of motor loads and transformer banks, then clears on sustained overloads faster than a D-curve would. That 50 A rating, combined with the 6 kA interrupting capacity at 277 VAC line-to-neutral, means it can safely interrupt a fault up to that level without welding contacts or cascading damage upstream. The DIN rail footprint keeps it in standard panel layout, so it slots into the same backplane as the rest of the S200-series breakers.","metaTitle":"ABB S203-C50 Miniature Circuit Breaker, 50A, 3P, Curve C","metaDescription":"ABB S203-C50 miniature circuit breaker, 50 A, 3-pole, C-curve, 6 kA interrupting capacity at 277 VAC. DIN rail mount. In current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Amps":"50","Type":"Trip Curve C","Poles":"3","title":"S203-C50","Mounting":"DIN Rail","Volts AC":"277","description":"Circuit Breaker, Miniature, DIN Rail Mount, 50A, 3P, 480Y/277VAC|Circuit Breaker, Miniature, DIN Rail Mount, 50 Amp, 3 Pole, 480Y/277 Volt AC, C Trip","lifecycle_stage":"current","Interrupt Rating AC":"6 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$22.23","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/15711926abffa4beb020dd43f9a3bbe5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the interrupting capacity of S203-C50?","answer":"The S203-C50 has a 6 kA interrupting capacity at 277 VAC. That is the maximum fault current this breaker can safely clear under its rated voltage."},{"question":"Where can I buy S203-C50?","answer":"The S203-C50 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203-C50","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-C50 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}}