{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202MUC-C20","brand":"ABB","brandSlug":"abb","productSlug":"S202MUC-C20","canonicalUrl":"https://aoctrl.com/abb/S202MUC-C20","factsUrl":"https://aoctrl.com/api/mcp/products/S202MUC-C20","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200MUC series, S202MUC-C20 miniature circuit breaker, 2-pole, 20 A, Trip Curve C, 277 VAC / 500 VDC, 6 kA AC / 10 kA DC interrupting capacity, DIN rail mount.","salesMarkdown":"It interrupts faults at 6 kA on AC circuits up to 277 V and 10 kA on DC circuits up to 500 V — the DC rating is notably higher than many comparable MCBs, making it a fit for DC bus or battery-string protection where the fault current can be stiffer. ## Curve C and interrupting capacity Trip Curve C means the magnetic trip operates at 5 to 10 times rated current (100–200 A for this 20 A unit). The 6 kA AC interrupting rating at 277 V is standard for branch-circuit protection in a distribution board; the 10 kA DC rating at 500 V is less common and tells you the arc-quenching chamber is designed for DC commutation, not just AC zero-crossing. The S200MUC family shares the same footprint as the broader S200 series, so it swaps into an existing ABB distribution board or sub-panel without re-drilling the backplate. Spring-loaded terminal clamps accept 0.5–25 mm² conductors; torque to 2.5 Nm.","metaTitle":"ABB S202MUC-C20 S200MUC MCB 2P C 20A, 6kA/10kA","metaDescription":"ABB S202MUC-C20 S200MUC miniature circuit breaker, 2-pole, 20 A, Trip Curve C, 277 VAC / 500 VDC, 6 kA/10 kA interrupting. DIN rail. Current lifecycle. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Amps":"20","Type":"Trip Curve C","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/8a1bdfa596c9b3d283ebdad42446501a.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S202MUC-C20/alternatives.json"},"ai":{"faq":[{"question":"What is the S202MUC-C20's interrupting capacity on AC and DC?","answer":"It interrupts 6 kA on AC circuits up to 277 V and 10 kA on DC circuits up to 500 V. The DC rating is higher than the AC rating, which is unusual and suits DC bus protection."},{"question":"Will the S202MUC-C20 drop into a panel specified around the S202M-B10?","answer":"Yes — both are 2-pole S200MUC family MCBs on the same DIN-rail footprint. The difference is the trip curve (C vs B) and the amp rating (20 A vs 10 A). The S202MUC-C20 will physically fit and wire in identically, but the trip curve and amp rating must match the circuit's design."},{"question":"Where can I buy the S202MUC-C20 and how is it quoted?","answer":"The S202MUC-C20 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures or lead-time numbers are published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202MUC-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/S202MUC-C20 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}}