{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S201-C40","brand":"ABB","brandSlug":"abb","productSlug":"S201-C40","canonicalUrl":"https://aoctrl.com/abb/S201-C40","factsUrl":"https://aoctrl.com/api/mcp/products/S201-C40","rawCanonicalId":null},"summary":{"shortDescription":"ABB S201-C40, miniature circuit breaker, 1-pole, 40 A, Trip Curve C, 277 VAC, 6 kA interrupting rating, DIN rail mount.","salesMarkdown":"The S201-C40 is a 1-pole miniature circuit breaker rated 40 A at 277 VAC, with a Trip Curve C characteristic and a 6 kA interrupting rating. The 40 A continuous current handles branch circuits feeding resistive or moderate motor loads up to that ampacity — think lighting banks, small HVAC units, or distribution subfeeds. DIN-rail mounting snaps directly into standard 35 mm rail in any enclosure or subpanel. ## Panel Integration — DIN-Rail Footprint, Single-Pole Width Single-pole width (roughly 18 mm per module) means it occupies one position in a distribution board. The thermal-magnetic trip mechanism is self-contained — no external shunt or undervoltage release required for basic overcurrent protection. Wire termination accepts copper conductors up to the breaker's rated capacity; torque settings per the nameplate.","metaTitle":"S201-C40 Miniature Circuit Breaker, 40A, 1P, Curve C, DIN Ra","metaDescription":"S201-C40 MCB, 40 A, 1-pole, Trip Curve C, 277 VAC, 6 kA interrupting rating. Current lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Amps":"40","Type":"Trip Curve C","Poles":"1","title":"S201-C40","Mounting":"DIN Rail","Volts AC":"277","description":"Circuit Breaker, Miniature, DIN Rail Mount, 40A, 1P, 480Y/277VAC|1 Pole, 40 Amps, Rated At 480Y/277 Volt AC, Ul 1077 Series, Miniature Circuit Breaker, with Thermal-Magnetic, Trip Device, C Curve, 65 kAIC","lifecycle_stage":"current","Interrupt Rating AC":"6 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.45","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/403e8196f819f52527748d491dad587c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the interrupting rating of the S201-C40?","answer":"The S201-C40 has a 6 kA interrupting rating at 277 VAC, sufficient for most commercial panelboard applications."},{"question":"Where can I buy the S201-C40 and how is it quoted?","answer":"The S201-C40 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will the S201-C40 drop into a panel specified for the S201M-C3?","answer":"Both share the same 1-pole DIN-rail footprint and 277 VAC rating, but the S201-C40 is rated 40 A versus 3 A for the S201M-C3. The physical fit is identical; the ampacity difference is the deciding factor for the branch circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S201-C40","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/S201-C40 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}}