{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202MUC-Z25","brand":"ABB","brandSlug":"abb","productSlug":"S202MUC-Z25","canonicalUrl":"https://aoctrl.com/abb/S202MUC-Z25","factsUrl":"https://aoctrl.com/api/mcp/products/S202MUC-Z25","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200MUC series, S202MUC-Z25 miniature circuit breaker, 2-pole, Trip Curve Z, 25 A, 277 VAC / 500 VDC, 6 kA interrupting capacity, DIN rail mount.","salesMarkdown":"Curve Z trips between 2.5x and 4x rated current, making it the tightest standard trip curve — designed for protecting semiconductor circuits, PLC power supplies, and sensitive electronic loads where even brief overcurrents can damage components. Rated 277 VAC with a 6 kA interrupting capacity, and 500 VDC with 10 kA interrupting capacity. The DC rating is notably higher than the AC figure — this breaker handles DC fault currents better than many general-purpose MCBs, which matters for string-level solar combiner boxes or DC bus protection in drives. The 277 VAC rating covers 277/480 V wye systems common in North American commercial lighting panels. ## DIN rail integration Snap-on DIN rail mounting per EN 60715. The 2-pole body takes 36 mm of rail width (two 18 mm modules). Spring-cage terminals accept 0.5–25 mm² conductors; strip length 12 mm. Torque to 2.5 Nm. No busbar bridging between poles — each pole is individually fed, so plan for jumper links if you need a common supply.","metaTitle":"ABB S202MUC-Z25 MCB, 25 A, 2-Pole, Curve Z, DIN Rail","metaDescription":"ABB S202MUC-Z25 miniature circuit breaker, 25 A, 2-pole, Trip Curve Z, 277 VAC / 500 VDC, 6 kA interrupting capacity. DIN rail mount. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Amps":"25","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/e12579f524da856e336bb19227b3c053.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S202MUC-Z25/alternatives.json"},"ai":{"faq":[{"question":"What is S202MUC-Z25's listed amps and trip curve?","answer":"The S202MUC-Z25 is rated 25 A with Trip Curve Z (2.5x to 4x In), 2-pole, 277 VAC / 500 VDC, with 6 kA AC and 10 kA DC interrupting capacity."},{"question":"Where can I buy S202MUC-Z25 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What compliance documentation does ABB provide for S202MUC-Z25?","answer":"The S200MUC series carries IEC/EN 60898-1 and IEC/EN 60947-2 certifications. RoHS and REACH declarations are standard from ABB for this product family. Specific UL/CSA listing should be verified against the nameplate marking on the unit you receive."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202MUC-Z25","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-Z25 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}}