{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4405-8CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4405-8CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4405-8CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4405-8CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4405-8CC11, 4-pole miniature circuit breaker, D tripping characteristic, 0.5 A rated at 35 °C, 10 kA breaking capacity per EN 60898, 4 modular width units.","salesMarkdown":"The 0.5 A rating holds at 35 °C. At 40 °C it derates to 0.46 A; at 50 °C, 0.41 A; at 60 °C, 0.36 A. If your panel ambient runs 50 °C — common in a packed enclosure near a drive — the breaker's actual continuous current capacity is 0.41 A, not the nominal 0.5 A. Size your load accordingly or the bimetal strip will nuisance-trip on a warm afternoon. Mounting position is any orientation. The combined terminal design on top and bottom accepts supply from either end — no need to flip the breaker for line/load orientation.","metaTitle":"Siemens 5SY4405-8CC11 SENTRON MCB, 4P D-curve 0.5A, 10kA","metaDescription":"Siemens 5SY4405-8CC11 SENTRON miniature circuit breaker, 4-pole, D tripping characteristic, 0.5 A rated current, 10 kA breaking capacity per EN 60898. Current production lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"72 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"0.5 A","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","Design Of The Product":"For railway applications","at 35 °C rated value":"0.5 A","at 40 °C rated value":"0.46 A","at 45 °C rated value":"0.44 A","at 50 °C rated value":"0.41 A","at 55 °C rated value":"0.39 A","at 60 °C rated value":"0.36 A","according to EN 61346-2":"F","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to EN 60898 rated value":"10 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","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","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","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fd7b297e2ac35ef13fb4c60af799569e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=719130&mlfb=5SY4405-8CC11","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4405-8CC11/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4405-8CC11?","answer":"It is rated 10 kA according to EN 60898. This is the maximum prospective fault current it can safely interrupt at the rated voltage."},{"question":"What does the D tripping characteristic mean for this breaker?","answer":"The D curve trips instantaneously at 10–14 times the rated current. It is designed for loads with high inrush, such as small transformers, solenoid valves, or motor starters, where a B or C curve would nuisance-trip on startup."},{"question":"How do I get current pricing and availability for 5SY4405-8CC11?","answer":"Pricing and stock levels are confirmed at quote time. Submit an RFQ through the storefront; the sourcing desk will return current availability and a firm price for your quantity."},{"question":"Will 5SY4405-8CC11 drop into a panel specified around 5SY4140-7?","answer":"Both are 4-pole SENTRON MCBs with the same 4 MW footprint (72 mm wide,), so the mechanical fit is identical. The difference is the tripping curve: 5SY4405-8CC11 is a D curve, while 5SY4140-7 is a different characteristic. Verify the load's inrush profile before swapping — a D curve on a resistive load may not provide adequate overcurrent protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4405-8CC11","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/5SY4405-8CC11 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}}