{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203-D1","brand":"ABB","brandSlug":"abb","productSlug":"S203-D1","canonicalUrl":"https://aoctrl.com/abb/S203-D1","factsUrl":"https://aoctrl.com/api/mcp/products/S203-D1","rawCanonicalId":null},"summary":{"shortDescription":"ABB S203-D1 miniature circuit breaker, 3-pole, 1 A, Trip Curve D, 277 VAC, 10 kA interrupting capacity, DIN rail mount.","salesMarkdown":"The ABB S203-D1 is a 3-pole miniature circuit breaker rated at 1 A with a Trip Curve D characteristic, designed for DIN-rail mounting in distribution panels and control cabinets. It interrupts fault currents up to 10 kA at 277 VAC, making it suitable for protecting motor circuits and transformer-fed loads where high inrush currents are expected — Curve D provides a wider magnetic trip threshold (10–20× In) than B or C curves, so nuisance tripping during startup is less likely.","metaTitle":"S203-D1 Miniature Circuit Breaker, 3P, 1A, Curve D, 10 kA","metaDescription":"S203-D1 miniature circuit breaker, 3-pole, 1 A, Trip Curve D, 277 VAC, 10 kA interrupting capacity. DIN rail mount. Current lifecycle. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Amps":"1","Type":"Trip Curve D","Poles":"3","Mounting":"DIN Rail","Volts AC":"277","lifecycle_stage":"current","Interrupt Rating AC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/88b646ab9ff99a3c2abf522a63701af0.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S203-D1/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of S203-D1?","answer":"The S203-D1 has a 10 kA interrupting capacity at 277 VAC, which covers most commercial and light industrial fault levels."},{"question":"Where can I buy S203-D1?","answer":"The S203-D1 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":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203-D1","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-D1 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}}