{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202MUC-Z5","brand":"ABB","brandSlug":"abb","productSlug":"S202MUC-Z5","canonicalUrl":"https://aoctrl.com/abb/S202MUC-Z5","factsUrl":"https://aoctrl.com/api/mcp/products/S202MUC-Z5","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200MUC series, S202MUC-Z5, 2-pole miniature circuit breaker, Trip Curve Z, 5 A, 277 VAC / 500 VDC, 6 kA interrupting capacity.","salesMarkdown":"The 6 kA interrupting capacity at 277 VAC covers most commercial lighting and control circuits; the 10 kA DC rating at 500 VDC suits battery banks and DC bus protection. ## Trip Curve Z — what it means for the circuit Trip Curve Z is the most sensitive of the standard curves, tripping magnetically between 2 and 3 times rated current. For a 5 A breaker, that means instantaneous trip at 10–15 A. This is the right choice for protecting semiconductor circuits, control transformers, or PLC power supplies where standard B- or C-curve breakers would let through enough fault energy to damage sensitive electronics. It also means nuisance tripping on motor inrush is likely — do not spec this for motor branch circuits. The 2-pole format occupies two module widths (roughly 36 mm). Terminal capacity accepts up to 25 mm² conductor. For DC circuits, remember that the 2-pole configuration switches both the positive and negative legs — essential for ungrounded battery systems where a single-pole break on one leg leaves the circuit still live through the return path.","metaTitle":"ABB S202MUC-Z5 MCB, 2P Z 5A, 277 VAC / 500 VDC","metaDescription":"ABB S202MUC-Z5 S200MUC series miniature circuit breaker, 2-pole, Trip Curve Z, 5 A, 277 VAC / 500 VDC, 6 kA interrupting capacity. Sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Amps":"5","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/9dbb6d14896872c543cf35297c1c7251.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S202MUC-Z5/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202MUC-Z5","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-Z5 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}}