{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7105-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7105-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7105-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7105-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7105-7CC, 1-pole miniature circuit breaker, C-curve, 0.5 A rated current, 50 kA breaking capacity at 440 VAC, 1 MW unit, DIN-rail mount.","salesMarkdown":"## SENTRON 5SY7105-7CC — 0.5 A C-curve MCB for tightly coupled protection The Siemens SENTRON 5SY7105-7CC is a 1-pole miniature circuit breaker with a C-curve tripping characteristic, rated 0.5 A at 35 °C and 440 VAC single-phase. Breaking capacity is 50 kA per IEC 60947-2 at 440 VAC — that's a serious fault-current rating for a 0.5 A device, meaning it can safely interrupt a bolted fault up to 50 kA without welding contacts or rupturing the case. This matters in high-available-fault-current panels (close to a transformer or generator bus) where a standard 10 kA or 15 kA MCB would be undersized. ## Thermal derating — don't let the 0.5 A nameplate fool you above 35 °C The 0.5 A rating is only valid at 35 °C ambient. At 40 °C it derates to 0.44 A, at 45 °C to 0.41 A, at 50 °C to 0.38 A, and at 55 °C to 0.35 A. The maximum operating ambient is 75 °C, minimum -40 °C. IP20 with connected conductors — fine for a clean panel, not for washdown.","metaTitle":"Siemens 5SY7105-7CC SENTRON MCB, 1P C-curve 0.5 A, 50 kA","metaDescription":"Siemens SENTRON 5SY7105-7CC miniature circuit breaker, 1-pole, C-curve, 0.5 A rated, 50 kA breaking capacity at 440 VAC. Active lifecycle, DIN-rail mount. Sourced to order against","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":"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","at 35 °C rated value":"0.5 A","at 40 °C rated value":"0.44 A","at 45 °C rated value":"0.41 A","at 50 °C rated value":"0.38 A","at 55 °C rated value":"0.35 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":"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","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/e999aac8bc74ff2bc5ead0beb43821bc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=173881&mlfb=5SY7105-7CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7105-7CC/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 5SY7105-7CC?","answer":"The SENTRON series carries CE, UKCA, and EAC declarations. RoHS and REACH compliance statements are available from Siemens on request. The breaker is halogen-free and silicon-free."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7105-7CC","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/5SY7105-7CC 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}}