{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202MUC-Z10","brand":"ABB","brandSlug":"abb","productSlug":"S202MUC-Z10","canonicalUrl":"https://aoctrl.com/abb/S202MUC-Z10","factsUrl":"https://aoctrl.com/api/mcp/products/S202MUC-Z10","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200MUC series, 2-pole miniature circuit breaker, Trip Curve Z, 10 A, 277 VAC / 500 VDC, 6 kA interrupting rating, DIN rail mount.","salesMarkdown":"On a 10 A breaker, the magnetic trip engages between roughly 20 A and 30 A, clearing a fault before the silicon junctions can melt. The 6 kA interrupting rating at 277 VAC handles the fault current available at a typical panelboard secondary; the 10 kA DC rating at 500 VDC covers battery-backed DC bus circuits common in UPS and solar combiner boxes. The 277 VAC rating covers line-to-neutral on a 480Y/277 V wye system; the 500 VDC rating is unusual for a 2-pole breaker this compact, making it a candidate for string-level DC protection where array voltage stays under 500 V. ## Deployment context In a panel environment, this breaker occupies two DIN-rail modules (36 mm width). The Z-curve trip makes it a poor fit for general-purpose motor branch circuits — those want a C or D curve to handle inrush — but it is the right choice for protecting power supplies, drives input rectifiers, and DC link capacitors where the load is nearly resistive or has a low surge factor. Wire it with the same torque and strip length as any S200 series terminal (2 N·m, 8 mm strip).","metaTitle":"ABB S202MUC-Z10 S200MUC MCB 2P Z 10 A, 6 kA AC","metaDescription":"ABB S202MUC-Z10 miniature circuit breaker, 2-pole, 10 A, Trip Curve Z, 277 VAC / 500 VDC, 6 kA interrupting rating. Active 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":"10","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/428743ede295b783674f353548b9d79a.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S202MUC-Z10/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy S202MUC-Z10 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — both are confirmed at quote time."},{"question":"When sourcing S202MUC-Z10, what is the closest functional second-source — S202M-B10?","answer":"The S202M-B10 shares the same 10 A rating, 2-pole DIN-rail form factor, and 6 kA AC interrupting rating, but uses a B trip curve (magnetic trip at 3–5× In) instead of the Z curve (2–3× In). It also has a lower DC voltage ceiling — 125 VDC versus 500 VDC on the Z10. The B10 will not protect semiconductor loads as tightly, and it cannot be used on 500 VDC circuits. For a panel originally specified around the B10, the Z10 drops into the same rail footprint and wiring without rewiring, but the trip curve difference means the Z10 may nuisance-trip on loads with moderate inrush that the B10 would ca"},{"question":"What is S202MUC-Z10's listed amps (10) on this component line?","answer":"The rated continuous current is 10 A. This is the thermal rating — the breaker will carry 10 A indefinitely at 30 °C ambient without tripping."},{"question":"What is S202MUC-Z10's listed type (Trip Curve Z) on this component line?","answer":"Trip Curve Z means the magnetic instantaneous trip operates between 2 and 3 times the rated current. For a 10 A breaker, that is 20–30 A. This is the fastest standard trip curve, intended for semiconductor protection."},{"question":"Will S202MUC-Z10 drop into a panel that was specified around S202M-B10 without rewiring?","answer":"Yes. Both breakers share the same 2-pole DIN-rail footprint, same terminal layout, and same S200 series mounting clip. No rewiring or rail modification is needed. The only difference is the trip curve — verify the load's inrush characteristic will not cause nuisance trips on the faster Z curve."},{"question":"What compliance documentation does this brand provide for S202MUC-Z10 (RoHS, REACH, UL, IEC)?","answer":"As an ABB S200MUC series breaker, the S202MUC-Z10 is designed to meet IEC/EN 60898-1 and IEC/EN 60947-2. ABB publishes a CE declaration of conformity and RoHS/REACH compliance statements for the S200MUC family. Specific UL/CSA listing details should be confirmed against the nameplate marking on the unit received."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202MUC-Z10","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-Z10 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}}