{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7105-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7105-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7105-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7105-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7105-8CC, 1-pole D-curve miniature circuit breaker, 0.5 A rated, 230/400 V AC, 50 kA breaking capacity per IEC 60947-2, 18 mm width.","salesMarkdown":"The Siemens SENTRON 5SY7105-8CC is a 1-pole miniature circuit breaker with a D tripping characteristic, rated at 0.5 A for 230/400 V AC circuits. It's built for high-inrush loads — motor starters, transformers, or switching power supplies — where the D-curve's magnetic trip at 10–20x rated current avoids nuisance tripping on startup. ## Fit and footprint Mounting position any, so it works in vertical or horizontal busbar layouts. IP20 with connected conductors, meaning it's enclosed in a panel, not exposed on the line side. ## Approvals and environment The 5 kA breaking capacity per UL 1077 / CSA C22.2 No.235 covers North American supplementary protection applications. Halogen-free and silicon-free construction, so it won't outgas corrosive compounds in sealed panels near sensitive electronics.","metaTitle":"Siemens 5SY7105-8CC SENTRON MCB, 1P D 0.5A, 50kA IEC","metaDescription":"Siemens SENTRON 5SY7105-8CC miniature circuit breaker, 1-pole, D-curve, 0.5 A, 230/400 V AC, 50 kA IEC 60947-2 breaking capacity. Active production, sourced to order. RFQ for prici","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","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","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":"D","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","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":"1.1 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c78e26ec43ddab7165c05b424e91906f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=494185&mlfb=5SY7105-8CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7105-8CC/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY7105-8CC and what is the lead time?","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 lead time."},{"question":"What is the breaking capacity of 5SY7105-8CC?","answer":"50 kA per IEC 60947-2 at 400 V AC, and 5 kA per UL 1077 / CSA C22.2 No.235 for North American supplementary protection."},{"question":"Will 5SY7105-8CC drop into a panel specified around 5SY4101-7CV without rewiring?","answer":"Both are 1-pole SENTRON MCBs on the same 18 mm DIN-rail footprint, so the mechanical fit is identical. The difference is the tripping curve — 5SY7105-8CC is a D-curve (10–20x In) for high-inrush loads, while 5SY4101-7CV is a B-curve (3–5x In) for resistive or general-purpose circuits. If the panel was designed for a B-curve, swapping to a D-curve may reduce nuisance tripping on motor starts but could also reduce fault selectivity with downstream B-curve breakers. Check the coordination study before swapping."},{"question":"What compliance documentation is available for 5SY7105-8CC?","answer":"The part carries IEC 60947-2 and UL 1077 / CSA C22.2 No.235 approvals. It is halogen-free and silicon-free, which supports RoHS and REACH compliance declarations. Specific certificates are available on request with an RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7105-8CC","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/5SY7105-8CC 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}}