{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202MUC-Z20","brand":"ABB","brandSlug":"abb","productSlug":"S202MUC-Z20","canonicalUrl":"https://aoctrl.com/abb/S202MUC-Z20","factsUrl":"https://aoctrl.com/api/mcp/products/S202MUC-Z20","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200MUC series, miniature circuit breaker (MCB), 2 poles, 20 A, Trip Curve Z, 277 V AC / 500 V DC, 6 kA AC / 10 kA DC interrupting capacity, DIN rail mount.","salesMarkdown":"Curve Z trips between 2.5 and 4 times rated current — designed for semiconductor protection and sensitive electronic loads where fast clearing of short circuits is needed while tolerating inrush from capacitive or switching power supplies. The 20 A rating means it protects a branch circuit up to that continuous load; the 6 kA interrupting capacity at 277 V AC and 10 kA at 500 V DC means it can safely clear faults up to those levels without upstream damage. ## Deployment context Snap-on DIN rail mounting (per EN 60715) fits standard 35 mm rail in control panels or sub-distribution boards. The 2-pole format occupies two module widths — plan your rail fill accordingly. Rated for 277 V AC line-to-neutral or 500 V DC circuits, so it works in both AC and DC applications like solar combiner boxes or DC bus protection.","metaTitle":"ABB S202MUC-Z20 MCB, 2P, 20A, Curve Z, DIN Rail","metaDescription":"ABB S202MUC-Z20 miniature circuit breaker, 2 poles, 20 A, Trip Curve Z, 277 V AC / 500 V DC, 6 kA AC / 10 kA DC interrupting capacity, DIN rail mount. Current lifecycle. Sourced to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Amps":"20","Type":"Trip Curve Z","Poles":"2","Mounting":"DIN Rail","Volts AC":"277","Volts DC":"500","lifecycle_stage":"current","Interrupt Rating AC":"6 kA","Interrupt Rating DC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f7bd06c8451b51f5953a85ae6228e97a.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S202MUC-Z20/alternatives.json"},"ai":{"faq":[{"question":"What is S202MUC-Z20's listed amps and trip curve?","answer":"It is rated 20 A with Trip Curve Z (trips at 2.5–4× In), designed for semiconductor and sensitive electronic load protection."},{"question":"Where can I buy S202MUC-Z20?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202MUC-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/S202MUC-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}}