{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S204-K16","brand":"ABB","brandSlug":"abb","productSlug":"S204-K16","canonicalUrl":"https://aoctrl.com/abb/S204-K16","factsUrl":"https://aoctrl.com/api/mcp/products/S204-K16","rawCanonicalId":null},"summary":{"shortDescription":"ABB S204-K16 miniature circuit breaker, 4-pole, Trip Curve K, 16 A, 277 VAC, 10 kA interrupting rating, DIN rail mount.","salesMarkdown":"The K curve means it's designed for motor and transformer circuits where inrush currents can briefly exceed the nominal rating — it tolerates a short-duration surge (typically 8–12× the rated current) before tripping, so it won't nuisance-trip on a motor start or transformer energization. Four poles let you switch all three phases plus neutral in a single unit, which keeps the panel layout clean. The 277 VAC phase-to-neutral rating fits 480Y/277 V wye systems common in North American commercial and light industrial panels. Use it in a motor control center feeder or a transformer primary protection circuit where the K-curve selectivity matters. Pair it with a contactor downstream for motor starting; the MCB handles the short-circuit protection, the contactor handles the switching duty.","metaTitle":"ABB S204-K16 MCB 4P K 16A 480Y/277, 10 kA","metaDescription":"ABB S204-K16 miniature circuit breaker, 4-pole, Trip Curve K, 16 A, 277 VAC, 10 kA interrupting rating. Current production. Sourced to order — RFQ for pricing and availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Amps":"16","Type":"Trip Curve K","Poles":"4","title":"S204-K16","Mounting":"DIN Rail","Volts AC":"277","description":"ABB S204-K16 MCB 4P K 16A 480Y/277|ABB S204K16","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/b9d7d987048e580687be0d6eca5507e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the S204-K16 and get a price?","answer":"The S204-K16 is sourced and quoted to order against an RFQ through independent distribution. Submit a request for your target quantity and we'll confirm current pricing and availability at quote time."},{"question":"What is the S204-K16's interrupting rating?","answer":"The S204-K16 has a 10 kA interrupting rating at 277 VAC, which means it can safely clear a fault current up to 10,000 amps without failing."},{"question":"What does Trip Curve K mean on the S204-K16?","answer":"Trip Curve K means the breaker tolerates a short-duration inrush of 8–12× the 16 A rated current before tripping — designed for motor and transformer loads that draw a brief startup surge."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S204-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/S204-K16 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}}