{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203P-K25","brand":"ABB","brandSlug":"abb","productSlug":"S203P-K25","canonicalUrl":"https://aoctrl.com/abb/S203P-K25","factsUrl":"https://aoctrl.com/api/mcp/products/S203P-K25","rawCanonicalId":null},"summary":{"shortDescription":"ABB S203P-K25 miniature circuit breaker, 3-pole, 25 A, Trip Curve K, 277 VAC, 10 kA interrupting rating, DIN-rail mount.","salesMarkdown":"## What the ratings mean for fit The ABB S203P-K25 is a 3-pole miniature circuit breaker rated 25 A continuous per pole at 277 VAC. The Trip Curve K means the magnetic trip is set to activate between 8 and 12 times the rated current — designed for loads with high inrush, such as motors, transformers, and solenoid valves, where a standard B or C curve would nuisance-trip on startup. The 10 kA interrupting rating at 277 VAC tells you it can safely clear a fault up to that level without welding contacts or cascading upstream — adequate for most commercial and light industrial panelboards fed from a transformer of similar kA rating. DIN-rail mounting means it clips directly onto a standard 35 mm DIN rail inside an enclosure — no separate base or adapter needed. The 3-pole construction handles three-phase circuits (L1, L2, L3) or three independent single-phase legs in a single housing.","metaTitle":"S203P-K25 ABB Miniature Circuit Breaker, 25A, 3-Pole, Curve","metaDescription":"ABB S203P-K25 miniature circuit breaker, 25 A, 3-pole, Trip Curve K, 277 VAC, 10 kA interrupting rating. DIN-rail mount. Current production. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Amps":"25","Type":"Trip Curve K","Poles":"3","title":"S203P-K25","Mounting":"DIN Rail","Volts AC":"277","description":"Breaker, Miniature, 3-Pole, 25 Amp|Miniature Circuit Breaker; 3-Poles, 25 Amps, 480/277 VAC","lifecycle_stage":"current","Interrupt Rating AC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9297f24fb33c46d96eee3bb21a6d9355.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How do I get current pricing and availability for S203P-K25?","answer":"Submit an RFQ through this listing. The part is sourced to order via independent distribution; pricing and stock are confirmed at quote time."},{"question":"What is S203P-K25's listed amps (25) on this component line?","answer":"The S203P-K25 is rated 25 A continuous per pole."},{"question":"What is S203P-K25's listed type (Trip Curve K) on this component line?","answer":"The S203P-K25 uses Trip Curve K, with a magnetic trip threshold of 8–12× rated current, suited for high-inrush loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203P-K25","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/S203P-K25 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}}