{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S201MUC-C20","brand":"ABB","brandSlug":"abb","productSlug":"S201MUC-C20","canonicalUrl":"https://aoctrl.com/abb/S201MUC-C20","factsUrl":"https://aoctrl.com/api/mcp/products/S201MUC-C20","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200MUC series, S201MUC-C20 miniature circuit breaker, 1-pole, Trip Curve C, 20 A, 277 VAC / 250 VDC, 6 kA AC / 10 kA DC interrupting rating, DIN rail mount.","salesMarkdown":"## Specs that govern the fit The 6 kA interrupting rating at 277 VAC and 10 kA at 250 VDC give it the breaking capacity for industrial panel branch circuits, not just residential lighting. Single-pole width means it occupies one module slot — 17.5 mm — so it fits tight sub-distribution boards and leaves room for auxiliary contacts or surge arrestors in the same row. No special panel cut-out needed; it clips in and out with a screwdriver on the release tab. The 277 VAC rating covers 277/480 V wye systems common in North American commercial and light industrial panels — the breaker clears faults on a 277 V line-to-neutral circuit. The 250 VDC rating suits DC bus or battery-backed control circuits; the 10 kA DC interrupting capacity is notably higher than the AC figure, reflecting the harder arc-extinction challenge on DC. Both ratings are per IEC 60947-2 and UL 1077 (supplementary protector) where applicable.","metaTitle":"ABB S201MUC-C20 MCB, 1P C 20A, 277VAC/250VDC, 6/10kA","metaDescription":"ABB S201MUC-C20 miniature circuit breaker, 1-pole, Trip Curve C, 20 A, 277 VAC / 250 VDC, 6 kA AC / 10 kA DC interrupting rating. DIN rail mount. Current lifecycle stage. Sourced t","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 C","Poles":"1","title":"S201MUC-C20","Mounting":"DIN Rail","Volts AC":"277","Volts DC":"250","description":"ABB S201MUC-C20 MCB S200MUC 1P C 20|ABB S201MUCC20 MCB S200MUC 1P","lifecycle_stage":"current","Interrupt Rating AC":"6 kA","Interrupt Rating DC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f40db15bfd3d9d22ca06e0eb079ed705.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between S201MUC-C20 and S201MUC-K2?","answer":"The S201MUC-K2 is the same 1-pole DIN-rail form factor but rated 2 A with Trip Curve K instead of Curve C. Curve K trips magnetically at 8 to 12 times rated current — tighter than C — and is typically used for inductive loads like transformers and solenoids where you need to ride through higher inrush without nuisance tripping. Both share the same 277 VAC / 250 VDC voltage ratings and 6/10 kA interrupting capacity, so they drop into the same panel slot and wiring without modification. The choice is purely the trip curve and current rating matching your load."},{"question":"Where can I buy S201MUC-C20?","answer":"The S201MUC-C20 is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will S201MUC-C20 drop into a panel that was specified around S201MUC-K2 without rewiring?","answer":"Yes — both are 1-pole DIN-rail breakers with identical voltage and interrupting ratings, same 17.5 mm width, same terminal layout. The swap is mechanical: pull the old breaker, clip in the new one. No wiring changes needed. The difference is purely the trip curve and current rating, so verify the load's inrush profile before committing the change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S201MUC-C20","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/S201MUC-C20 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}