{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S201-K63","brand":"ABB","brandSlug":"abb","productSlug":"S201-K63","canonicalUrl":"https://aoctrl.com/abb/S201-K63","factsUrl":"https://aoctrl.com/api/mcp/products/S201-K63","rawCanonicalId":null},"summary":{"shortDescription":"ABB S201-K63 miniature circuit breaker, 1-pole, K-curve, 63 A, 277 VAC, 6 kA interrupting rating, UL1077, DIN rail mount.","salesMarkdown":"## What this K-curve 63 A breaker does for your panel The ABB S201-K63 is a 1-pole miniature circuit breaker rated 63 A at 277 VAC, with a 6 kA interrupting capacity. The K-curve trips between 8 and 12 times rated current — that's 504 to 756 A instantaneous — making it the right choice for motor-starting and transformer inrush loads where you need to ride through the surge but still clear a hard fault. Snaps onto standard DIN rail, same footprint as any System Pro M compact MCB. This part carries a current lifecycle stage — ABB still lists it as an active catalog number. For BOM freeze or line-down replacement, we source it through our independent distribution network. ## DIN-rail integration note The K63's thermal-magnetic element is self-contained — no external shunt or undervoltage release needed for basic overcurrent protection. Wire range 1–25 mm² for line and load terminals. Torque to 2.5 N·m.","metaTitle":"ABB S201-K63 MCB 1P K-Curve 63A 277V UL1077","metaDescription":"ABB S201-K63 miniature circuit breaker, 1-pole, K-curve, 63 A, 277 VAC, 6 kA interrupting, DIN rail mount, UL1077. Current lifecycle, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Amps":"63","Type":"Trip Curve K","Poles":"1","Mounting":"DIN Rail","Volts AC":"277","lifecycle_stage":"current","Interrupt Rating AC":"6 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$96.42","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f4f202f76da4cad1d0cc0824d5cc6233.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S201-K63/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S201-K63","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/S201-K63 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}}