{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S263-C25","brand":"ABB","brandSlug":"abb","productSlug":"S263-C25","canonicalUrl":"https://aoctrl.com/abb/S263-C25","factsUrl":"https://aoctrl.com/api/mcp/products/S263-C25","rawCanonicalId":null},"summary":{"shortDescription":"ABB S263-C25, C-curve 25A DIN-rail miniature circuit breaker, current production, 0.94 kg.","salesMarkdown":"## Panel Fit and Sourcing Reality ## What the C-Curve and 25 A Rating Mean The C-curve means the magnetic trip operates at 5 to 10 times the rated current (125–250 A instantaneous), so it holds through the startup surge of a 5.5 kW motor or a bank of LED drivers without nuisance tripping, but still clears a hard short fast enough to protect the cable. For resistive loads with no inrush, a B-curve would trip faster; for high-inrush transformers, a D-curve might be needed — but the C-curve is the general-purpose choice for mixed industrial and commercial panels.","metaTitle":"ABB S263-C25 Din Rail MCB, C-Curve 25A, Current Production","metaDescription":"ABB S263-C25 C-curve 25A DIN-rail MCB. Current production lifecycle. Sourced to order against RFQ. Weight 0.94 kg. For panel protection.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Part #":"S263-C25","Weight":"0.94 kgs","Category":"Circuit Breakers","Sub Category":"Din Rail Mount Circuit Breakers","Top Category":"Circuit Breakers, Fuses & Protection","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$125.32","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S263-C25/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy S263-C25 and what is the lead time?","answer":"S263-C25 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quote — submit an RFQ for a firm delivery estimate."},{"question":"What is the closest functional second-source for S263-C25 — S273-K40A?","answer":"The S273-K40A is a K-curve 40 A breaker in the same ABB 263 family, same DIN-rail footprint. It is not a direct functional second-source because the trip curve and ampacity differ — verify the load and coordination study before substituting."},{"question":"Will S263-C25 drop into a panel specified around S273-K40A without rewiring?","answer":"No. The S263-C25 is a C-curve 25 A breaker; S273-K40A is a K-curve 40 A. Same footprint, but the trip characteristic and rating are different — a substitution requires a coordination review."},{"question":"What compliance documentation does ABB provide for S263-C25?","answer":"The evidence does not list specific compliance documentation (RoHS, REACH, UL, IEC) for this part. Standard ABB MCB documentation typically includes a declaration of conformity and product data sheet — request these with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S263-C25","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/S263-C25 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}}