{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202MUC-B50","brand":"ABB","brandSlug":"abb","productSlug":"S202MUC-B50","canonicalUrl":"https://aoctrl.com/abb/S202MUC-B50","factsUrl":"https://aoctrl.com/api/mcp/products/S202MUC-B50","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200MUC series, S202MUC-B50, 2-pole miniature circuit breaker, Trip Curve B, 50 A, 277 VAC / 500 VDC, 6 kA AC / 10 kA DC interrupting capacity, DIN rail mount.","salesMarkdown":"On a 277 VAC line it interrupts faults up to 6 kA; on a 500 VDC circuit it handles 10 kA. That DC interrupting capacity is notably higher than the AC figure, which matters for battery banks or DC bus protection where fault currents can be sustained. ## Panel integration The 2-pole footprint takes two module widths (roughly 36 mm) in the enclosure. No special busbar or comb needed for the line side — standard DIN-rail accessories fit.","metaTitle":"ABB S202MUC-B50 S200MUC MCB, 2P B 50A, 277VAC/500VDC","metaDescription":"ABB S202MUC-B50 miniature circuit breaker, 2-pole, Trip Curve B, 50 A, 277 VAC / 500 VDC, 6 kA AC / 10 kA DC interrupting capacity. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Amps":"50","Type":"Trip Curve B","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/799f29a27445d7d89fcba95dde1d2745.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S202MUC-B50/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy S202MUC-B50 and how do I get a price?","answer":"The S202MUC-B50 is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — no static stock count or list price is published here."},{"question":"What is S202MUC-B50's listed amps and trip curve?","answer":"Rated 50 A with Trip Curve B (trips at 3–5× In). Two poles, rated 277 VAC / 500 VDC with interrupting capacities of 6 kA AC and 10 kA DC."},{"question":"Will S202MUC-B50 drop into a panel specified around S202M-B10 without rewiring?","answer":"The S202MUC-B50 and the S202M-B10 share the same 2-pole DIN-rail footprint and terminal layout. The difference is the amp rating (50 A vs 10 A) and the DC voltage rating (500 VDC vs 125 VDC). Physically it fits the same slot; electrically you must verify the load and fault-current coordination match the 50 A rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202MUC-B50","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-B50 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}}