{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6520-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6520-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY6520-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6520-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6520-8CC miniature circuit breaker, D-characteristic, 20 A rated, 6 kA breaking capacity, 2-pole 1P+N, 36 mm wide.","salesMarkdown":"It's a 2-pole unit wired as 1P+N — the neutral pole switches with the line, which matters when you need isolation on both sides of the load without a separate disconnect. Full rating holds at 35 °C ambient. At 40 °C it derates to 18.8 A, at 50 °C to 17.52 A, and at 55 °C to 16.84 A. Sealable per the spec, so a panel builder can lock the toggle position with a seal wire. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz.","metaTitle":"Siemens 5SY6520-8CC SENTRON MCB, 20 A, D-curve, 6 kA","metaDescription":"Siemens 5SY6520-8CC SENTRON miniature circuit breaker, 20 A rated, D tripping characteristic, 6 kA breaking capacity per EN 60898, 2-pole 1P+N, 36 mm wide. Current production, avai","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY6520-8CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V 6kA, 1+N-pole, D, 20A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","at AC / rated value":"20 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","according to EN 61346-2":"F","at 35 °C / rated value":"20 A","at 40 °C / rated value":"18.8 A","at 45 °C / rated value":"18.18 A","at 50 °C / rated value":"17.52 A","at 55 °C / rated value":"16.84 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"Yes","Number Of Modular Width Units":"2","Tripping Characteristic Class":"D","Position / Of Power Supply Cord":"Any","according to EN 60898 / rated value":"6 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage / Of The Operating Voltage":"AC","Value Range / Of The Supply Voltage Frequency":"50/60 Hz","operating voltage / at DC / rated value / maximum":"72 V","vibration resistance / according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","with single-phase operation / at AC / rated value":"250 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3fdeb20398cbdd8d5f6f301d60156049.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=250643&mlfb=5SY6520-8CC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY6520-8CC?","answer":"The breaking capacity is 6 kA per EN 60898 at AC. That's the standard residential and light-commercial fault level — adequate for most panelboards fed by a transformer up to about 200 kVA, but verify against the prospective short-circuit current at the installation point."},{"question":"What does the D-curve mean for this breaker?","answer":"The D tripping characteristic means the magnetic trip activates at 5 to 10 times the rated current (100–200 A for this 20 A unit). It's designed for loads with high inrush — motor starters, small transformers, discharge lighting — where a B or C curve would trip on the startup surge."},{"question":"Where can I buy 5SY6520-8CC?","answer":"The 5SY6520-8CC is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6520-8CC","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/5SY6520-8CC 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}}