{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S201P-K16","brand":"ABB","brandSlug":"abb","productSlug":"S201P-K16","canonicalUrl":"https://aoctrl.com/abb/S201P-K16","factsUrl":"https://aoctrl.com/api/mcp/products/S201P-K16","rawCanonicalId":null},"summary":{"shortDescription":"ABB S201P-K16, 1-pole miniature circuit breaker, 16 A, Trip Curve K, 10 kA interrupting capacity at 277 VAC, DIN rail mount, UL 1077 supplementary protector.","salesMarkdown":"The ABB S201P-K16 is a 1-pole miniature circuit breaker rated 16 A with a Trip Curve K characteristic, interrupting 10 kA at 277 VAC. It is listed as a UL 1077 supplementary protector — meaning it protects downstream equipment, not the branch circuit itself. That distinction matters for panel builders: the branch-circuit overcurrent device upstream must still be sized per NEC. The DIN-rail footprint snaps into standard 18 mm per pole spacing. ## Curve K and what it means on the line Trip Curve K is the narrow band between B and C on the magnetic-trip side — typically 8 to 12 times rated current. That makes the S201P-K16 a fit for inductive loads like small transformers, solenoid valves, or motor starters where inrush is higher than a resistive load but not severe enough to need Curve Z or D. On a 16 A frame, the magnetic trip will hold through roughly 128 to 192 A peak without nuisance tripping. If your load is a motor with a locked-rotor current above that range, step up to Curve D.","metaTitle":"S201P-K16 1P 16A Curve K MCB, 10kA, 277VAC, UL 1077","metaDescription":"S201P-K16 miniature circuit breaker, 1 pole, 16 A, Trip Curve K, 10 kA interrupting at 277 VAC. UL 1077 supplementary protector. DIN rail mount. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Amps":"16","Type":"Trip Curve K","Poles":"1","Mounting":"DIN Rail","Volts AC":"277","lifecycle_stage":"current","Interrupt Rating AC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.19","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6b48c5e99d4ba04089a9c92aa48571b8.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S201P-K16/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does ABB provide for S201P-K16?","answer":"The S201P-K16 is UL 1077 and CSA 22.2 No. 235 listed. RoHS and REACH declarations are available with the shipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S201P-K16","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/S201P-K16 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}}