{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8104-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8104-7","canonicalUrl":"https://aoctrl.com/siemens/5SY8104-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8104-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, miniature circuit breaker, 5SY8104-7, 1-pole, C characteristic, 50 kA at 400 V AC (IEC 60947-2), 15 kA at 60 V DC, IP20.","salesMarkdown":"The 5SY8104-7 is a 1-pole SENTRON miniature circuit breaker with a C tripping characteristic, rated for 400 V AC (50/60 Hz) and 60 V DC. On the DC side, it's rated 15 kA at 60 V DC, which covers most control-circuit and battery-bank applications. The UL 1077 listing at 5 kA confirms it's recognized as a supplementary protector in North American panels, not a branch-circuit rated breaker. The operating temperature range is -40 °C to 75 °C, with humidity derating above 55 °C (95% RH up to 55 °C, 55% RH up to 70 °C, 35% RH up to 75 °C). That's wide enough for unheated outdoor cabinets in cold climates, but watch the humidity curve if the panel sees condensation. ## Mechanical endurance and compliance Vibration resistance per IEC 60068-2-6: ±1 mm at 5 to 25 Hz, 50 m/s² at 25 to 150 Hz. Halogen-free and silicon-free construction, which matters for clean-room or semiconductor-adjacent installations where outgassing contaminates optics or wafers. Sealable terminals are standard, allowing lockout/tagout compliance without add-on accessories.","metaTitle":"Siemens 5SY8104-7 SENTRON MCB, C-Curve, 1P, 50 kA IEC","metaDescription":"Siemens 5SY8104-7 SENTRON miniature circuit breaker, 1-pole, C characteristic, 50 kA breaking capacity at 400 V AC per IEC 60947-2. Active production, sourced to order. Request quo","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SY8104-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60947-2 / UL1077","description":"Circuit breaker 230/400 V D=70 mm 25 kA according to EN 60947-2, 1P, C4","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","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","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8b035b9c5397aa9ec8eab95719d42aca.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=255071&mlfb=5SY8104-7"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY8104-7 at 400 V AC?","answer":"50 kA per IEC 60947-2 at 400 V AC. Under UL 1077 it's rated 5 kA as a supplementary protector."},{"question":"Will 5SY8104-7 drop into a panel specified for 5SY4101-7CV without rewiring?","answer":"Both are 1-pole, 1-module-width SENTRON MCBs with the same DIN-rail footprint and terminal layout. The 5SY8104-7 carries a higher breaking capacity (50 kA vs the 5SY4101-7CV's lower rating), so it's a functional upgrade in the same physical envelope — no rewiring needed, but verify the trip characteristic matches your coordination study."},{"question":"Where can I buy 5SY8104-7 and how is it quoted?","answer":"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."},{"question":"What compliance documentation does Siemens provide for 5SY8104-7?","answer":"The part is certified under IEC/EN 60947-2 and UL 1077. It's halogen-free and silicon-free. Standard compliance documentation (CE, UKCA, EAC) is available from Siemens; RoHS and REACH declarations are typically included with the shipment or downloadable from the Siemens support portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8104-7","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/5SY8104-7 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}}