{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S201-K25","brand":"ABB","brandSlug":"abb","productSlug":"S201-K25","canonicalUrl":"https://aoctrl.com/abb/S201-K25","factsUrl":"https://aoctrl.com/api/mcp/products/S201-K25","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200 series, S201-K25, miniature circuit breaker, 1-pole, 25 A, Trip Curve K, 277 V AC, 6 kA interrupting rating, DIN rail mount, UL 1077, CSA 22.2.","salesMarkdown":"The S201-K25 is a 1-pole miniature circuit breaker from ABB's S200 series, rated 25 A at 277 V AC. The 6 kA interrupting rating at 277 V AC is the maximum fault current it can safely clear; for a 480Y/277 V panel, this breaker sits on the 277 V line-to-neutral leg, so the available fault current at that point must be 6 kA or less — check your SCCR study before committing the BOM line. ## Mounting and approvals — what the nameplate tells you Snaps onto standard DIN rail. The UL 1077 listing classifies it as a supplementary protector — it's not a service-entrance breaker; it protects downstream equipment inside a listed industrial control panel. CSA 22.2 covers Canadian installations. The S200 series shares a common footprint, so if you're swapping an older S200 unit, the bus-bar pitch and terminal spacing are the same. Terminal torque: 2 Nm for the line and load lugs, accepts up to 25 mm² copper.","metaTitle":"S201-K25 Miniature Circuit Breaker, 25A, 1P, Curve K, 277V A","metaDescription":"S201-K25 miniature circuit breaker, 25 A, 1 pole, Trip Curve K, 277 V AC, 6 kA interrupting rating. UL 1077, CSA 22.2. Current lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Amps":"25","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":"$26.97","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1b888e9d473400bd32917551d1de57a0.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S201-K25/alternatives.json"},"ai":{"faq":[{"question":"What is S201-K25's interrupting rating?","answer":"6 kA at 277 V AC. That is the maximum fault current the breaker can safely interrupt. For a 480Y/277 V panel, this applies line-to-neutral on the 277 V leg."},{"question":"What compliance documentation does S201-K25 carry?","answer":"UL 1077 (supplementary protector) and CSA 22.2. These are the key approvals for industrial control panels in North America."},{"question":"Where can I buy S201-K25?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S201-K25","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-K25 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}}