{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S201-Z20","brand":"ABB","brandSlug":"abb","productSlug":"S201-Z20","canonicalUrl":"https://aoctrl.com/abb/S201-Z20","factsUrl":"https://aoctrl.com/api/mcp/products/S201-Z20","rawCanonicalId":null},"summary":{"shortDescription":"ABB S201-Z20, 1-pole miniature circuit breaker, Trip Curve Z, 20 A, 277 VAC, 6 kA interrupting rating, DIN rail mount.","salesMarkdown":"## ABB S201-Z20 — 1-pole MCB, Trip Curve Z, 20 A Trip Curve Z is the key decision point here: it trips between 2.5× and 4× rated current, faster than Curve B or C. This makes the S201-Z20 suited for protecting semiconductor circuits, control transformers, and other loads where the inrush is minimal but short-circuit protection must clear quickly. The 20 A rating and 6 kA SCCR at 277 VAC mean it can handle a 20 A continuous load and safely interrupt a fault up to 6,000 A without upstream coordination issues in a typical 277/480 V panel. The 1-pole form factor fits single-phase branch circuits or individual phase legs in multi-pole assemblies. Rated for 277 VAC line-to-neutral applications, common in North American commercial lighting and receptacle circuits.","metaTitle":"ABB S201-Z20 MCB 1P Z 20A 277V, 6 kA","metaDescription":"ABB S201-Z20 miniature circuit breaker, 1-pole, Trip Curve Z, 20 A, 277 VAC, 6 kA interrupting rating. DIN rail mount, current lifecycle stage. 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":"20","Type":"Trip Curve Z","Poles":"1","Mounting":"DIN Rail","Volts AC":"277","lifecycle_stage":"current","Interrupt Rating AC":"6 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.67","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8808ac6d09708937181e0659001d1aed.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S201-Z20/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of the S201-Z20?","answer":"The S201-Z20 has a 6 kA interrupting rating at 277 VAC, sufficient for standard branch-circuit fault levels in commercial and light industrial panels."},{"question":"What does Trip Curve Z mean for this breaker?","answer":"Trip Curve Z means the breaker trips between 2.5× and 4× rated current (50–80 A for this 20 A unit), faster than Curve B or C. This characteristic is designed for protecting semiconductor circuits, control transformers, and other loads with minimal inrush where fast short-circuit clearing is needed."},{"question":"Where can I buy the S201-Z20 and get current pricing?","answer":"The S201-Z20 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"Will the S201-Z20 fit in a panel designed for the S201M-C3?","answer":"Yes. Both the S201-Z20 and S201M-C3 share the same 1-pole, DIN-rail mount form factor and 277 VAC rating. The difference is the trip curve: Z (2.5–4× In) versus C (5–10× In). If the panel wiring and load are sized for 20 A, the S201-Z20 drops in without rewiring — but verify the load's inrush characteristic matches Curve Z's faster trip threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S201-Z20","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-Z20 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}}