{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203PR-K50","brand":"ABB","brandSlug":"abb","productSlug":"S203PR-K50","canonicalUrl":"https://aoctrl.com/abb/S203PR-K50","factsUrl":"https://aoctrl.com/api/mcp/products/S203PR-K50","rawCanonicalId":null},"summary":{"shortDescription":"ABB, System pro M compact, Molded Case Circuit Breaker, 3-pole, K characteristic, S203PR-K50.","salesMarkdown":"The K curve provides a higher magnetic trip threshold than B or C curves, making it suited for loads with moderate inrush — think motor circuits, transformers, or industrial lighting where you need to ride through the startup surge without nuisance tripping.","metaTitle":"ABB S203PR-K50 Molded Case Circuit Breaker, 3-Pole, K Curve","metaDescription":"ABB S203PR-K50 3-pole molded case circuit breaker, K curve. Current lifecycle stage. Sourced to order against RFQ. Weight 0.34 kg.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Part #":"S203PR-K50","Weight":"0.34 kgs","Category":"Circuit Breakers","Sub Category":"Molded Case Circuit Breakers","Top Category":"Circuit Breakers, Fuses & Protection","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$167.09","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S203PR-K50/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for S203PR-K50?","answer":"Submit an RFQ for the S203PR-K50. We source through independent distribution and confirm current pricing and availability at quote time."},{"question":"What is the closest functional second-source to S203PR-K50?","answer":"The closest functional peer is the ABB S201PR-K20, a 1-pole version with the same K-curve characteristic. For a 3-pole replacement, the S203PR-K50 is the direct fit; the S201PR-K20 would require rewiring for single-pole applications only."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203PR-K50","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-K50 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}}