{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203P-Z3","brand":"ABB","brandSlug":"abb","productSlug":"S203P-Z3","canonicalUrl":"https://aoctrl.com/abb/S203P-Z3","factsUrl":"https://aoctrl.com/api/mcp/products/S203P-Z3","rawCanonicalId":null},"summary":{"shortDescription":"ABB, System pro M compact S200 series, miniature circuit breaker (MCB), S203P-Z3, 3 A, 3-pole, Trip Curve Z, 277 VAC, 10 kA interrupting rating, DIN rail mount.","salesMarkdown":"The ABB S203P-Z3 is a 3-pole miniature circuit breaker rated at 3 A continuous, with a Trip Curve Z characteristic and a 10 kA interrupting capacity at 277 VAC. Curve Z is the most sensitive standard trip curve — it trips at 2 to 3 times rated current (6–9 A for this 3 A unit), making it the right choice for protecting semiconductor circuits, PLC power supplies, and sensitive electronic loads where standard B- or C-curve breakers would allow too much fault energy through before opening. Three-pole width (3 modules, 17.5 mm per pole = 52.5 mm total) matches the S200 family footprint — no panel rework if swapping from another S200-series 3-pole breaker. Rated 277 VAC phase-to-neutral in a 480Y/277 V wye system; the 3-pole construction lets you protect all three phases with one device.","metaTitle":"ABB S203P-Z3 MCB, 3A 3-Pole Trip Curve Z, 277 VAC","metaDescription":"ABB S203P-Z3 miniature circuit breaker, 3 A, 3-pole, Trip Curve Z, 277 VAC, 10 kA interrupting rating. DIN rail mount, current lifecycle stage. Available to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Amps":"3","Type":"Trip Curve Z","Poles":"3","Mounting":"DIN Rail","Volts AC":"277","lifecycle_stage":"current","Interrupt Rating AC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1ab47f9bd64b054120a73d7a42f6f04d.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S203P-Z3/alternatives.json"},"ai":{"faq":[{"question":"What is S203P-Z3's listed amps and trip curve?","answer":"Rated 3 A continuous with Trip Curve Z (2–3× In magnetic trip), 3-pole, 277 VAC, 10 kA interrupting capacity."},{"question":"Will S203P-Z3 drop into a panel specified around S201PR-K5 without rewiring?","answer":"No — S201PR-K5 is a 1-pole, 5 A, Curve K breaker. S203P-Z3 is 3-pole, 3 A, Curve Z. Different pole count, rating, and trip characteristic; the panel would need rewiring and a new coordination study."},{"question":"Where can I buy S203P-Z3 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time — no stock count or price published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203P-Z3","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/S203P-Z3 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}}