{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4320-7CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4320-7CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4320-7CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4320-7CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4320-7CV, MCB Icu=15kA 400V 3P C20.","salesMarkdown":"The Siemens 5SY4320-7CV is a 3-pole miniature circuit breaker (MCB) rated for a 20 A C-trip curve with a 15 kA interrupting capacity (Icu) at 400 V AC. That 15 kA rating means it can safely clear a bolted fault up to that level without welding its contacts or rupturing the case — critical for downstream coordination in a panel feeding motor starters or distribution subfeeds where available fault current is high. Snap-on DIN rail mount, standard 3-module width. The C20 curve handles moderate inrush from motor starters or small transformers — typical for a panel-fed machine cell where the load isn't purely resistive. The 15 kA Icu at 400 V matches the SCCR requirement for most industrial control panels built to UL 508A; verify the let-through of the upstream device to keep the series rating intact.","metaTitle":"5SY4320-7CV MCB 15kA 400V 3P C20","metaDescription":"5SY4320-7CV MCB, Icu=15kA at 400V, 3-pole, C20 curve. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"title":"5SY4320-7CV","description":"MCB Icu=15KA 400V 3P C20","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4bc4b4cb2c4bfe69de456f42a0dbe441.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531594&mlfb=5SY4320-7CV"},"ai":{"faq":[{"question":"What is the interrupting rating of 5SY4320-7CV?","answer":"The MCB is rated for a 15 kA interrupting capacity (Icu) at 400 V AC, 3-pole, with a C20 trip curve."},{"question":"Where can I buy 5SY4320-7CV?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4320-7CV","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5SY4320-7CV 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}}