{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8504-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8504-8","canonicalUrl":"https://aoctrl.com/siemens/5SY8504-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8504-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8504-8, miniature circuit breaker, D-curve, 4 A, 2-pole (1P+N), 50 kA breaking capacity per IEC 60947-2, 15 kA DC, depth 76 mm, width 36 mm, IP20.","salesMarkdown":"The 5SY8504-8 is a Siemens SENTRON miniature circuit breaker (MCB) rated 4 A with a D tripping characteristic, 2-pole construction (1P+N), and a 50 kA breaking capacity per IEC 60947-2 at 400 V AC. At 45 °C ambient it still carries the full 4 A; derate to 3.88 A at 50 °C and 3.75 A at 55 °C. For DC circuits, rated breaking capacity drops to 15 kA at a maximum 72 V DC. The 2-pole format with switched neutral (1P+N) means the neutral pole opens and closes with the phase — useful where isolation on both conductors is required by local code or application. The quick-assembly fastening system snaps onto the rail; mounting position is any orientation. IP20 with connected conductors, so it belongs inside an enclosure, not exposed to washdown. Sealable terminals support lockout/tagout procedures. Vibration resistance per IEC 60068-2-6: ±1 mm at 5 to 25 Hz, 50 m/s² at 25 to 150 Hz. Pollution degree 3, overvoltage category III — rated for fixed installations in industrial environments where conductive pollution is possible. The product designation follows EN 61346-2 and IEC 81346-2 function code F (protective device). Suitability for operation listed as mechanical engineering/industry.","metaTitle":"Siemens SENTRON 5SY8504-8 MCB, 4 A D-curve, 2-pole, 50 kA","metaDescription":"Siemens SENTRON 5SY8504-8 miniature circuit breaker, 4 A rated, D tripping characteristic, 2-pole (1P+N), 50 kA breaking capacity per IEC 60947-2, 15 kA DC. Active production. Sour","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY8504-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V D=70 mm 25 kA according to EN 60947-2, 1P+N, D4","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":"4 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","according to EN 61346-2":"F","at 45 °C / rated value":"4 A","at 50 °C / rated value":"3.88 A","at 55 °C / rated value":"3.75 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","Tripping Characteristic Class":"D","Position / Of Power Supply Cord":"Any","Product Feature / Touch Protection":"Yes","according to IEC 60947-2 / rated value":"50 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","at DC / according to IEC 60947-2 / rated value":"15 kA","Product Component / Neutral Conductor Switching":"Yes","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/7b581e73164d2aa6d768e7d02773e331.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=99005&mlfb=5SY8504-8"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY8504-8?","answer":"50 kA per IEC 60947-2 at 400 V AC, and 15 kA at 72 V DC. The high AC breaking capacity suits high-fault industrial panels without needing upstream current-limiting fuses."},{"question":"Will 5SY8504-8 drop into a panel built for 5SY7210-7CC?","answer":"Both are 2-module-width (36 mm) DIN-rail MCBs, so the physical footprint matches. However, verify the current rating, tripping curve, and breaking capacity of your existing design — the 5SY8504-8 is a 4 A D-curve unit, which may differ from the 5SY7210-7CC specification."},{"question":"How do I get pricing and availability for 5SY8504-8?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; current pricing and stock position are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8504-8","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/5SY8504-8 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}}