{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7302-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7302-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7302-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7302-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7302-8CC miniature circuit breaker, D-curve, 3-pole, 2 A rated, 50 kA breaking capacity per IEC 60947-2, 440 V AC.","salesMarkdown":"## Siemens 5SY7302-8CC — D-curve MCB for motor and transformer branch circuits Three-pole design (3P) with combined top and bottom terminals, quick-assembly mounting, and any-position installation. The 54 mm width occupies 3 modular units on a DIN rail. D-curve trips between 10× and 20× In (20–40 A magnetic release), sized for motor starting and transformer energisation where a C-curve would nuisance-trip on inrush. The 2 A rating at 35 °C derates to 1.89 A at 40 °C and 1.71 A at 55 °C — if your enclosure runs hot, factor the thermal curve into the branch-circuit sizing. The 50 kA SCCR at 440 V AC per IEC 60947-2 covers most industrial supply points; verify against your transformer kVA and upstream breaker let-through. ## D-curve selectivity and coordination note For selectivity studies: the D-curve's magnetic threshold at 20–40 A means downstream C-curve MCBs on lighting or control circuits will clear before this breaker trips on a low-level fault. Upstream, verify the 50 kA rating against your transformer's short-circuit capacity. The 440 V AC rating covers 400 V and 415 V systems common in European and Asian industrial plants; 50/60 Hz rated.","metaTitle":"Siemens 5SY7302-8CC SENTRON MCB, D-Curve 2A 3P 50kA","metaDescription":"Siemens 5SY7302-8CC SENTRON miniature circuit breaker, D tripping characteristic, 2 A rated, 3-pole, 50 kA breaking capacity per IEC 60947-2. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY7302-8CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 15kA, 3-pole, D, 2A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","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":"2 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","according to EN 61346-2":"F","at 35 °C / rated value":"2 A","at 40 °C / rated value":"1.89 A","at 45 °C / rated value":"1.83 A","at 50 °C / rated value":"1.77 A","at 55 °C / rated value":"1.71 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"3","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","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","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":"440 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/73086865219fafa250b1fc97ecb8321f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=227911&mlfb=5SY7302-8CC"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7302-8CC","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/5SY7302-8CC 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}}