{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7650-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7650-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7650-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7650-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7 series, 4-pole miniature circuit breaker, 50 A rated current, D tripping characteristic, 15 kA breaking capacity acc. to IEC 60947-2, 400 V AC, 72 V DC.","salesMarkdown":"The Siemens 5SY7650-8 is a 4-pole (3P+N) SENTRON miniature circuit breaker with a D tripping characteristic, rated 50 A at 400 V AC and 72 V DC maximum. Its breaking capacity is 15 kA per IEC 60947-2 and EN 60898, with a supplementary 5 kA rating under UL 1077 and CSA C22.2 No. 235. This is a current-production part (lifecycle stage: active) from the 5SY7 design family, intended for mechanical engineering and industrial panel applications. The 5 kA UL 1077 rating is a supplementary protector listing; it is not a full branch-circuit UL 489 breaker, so verify the local code if you are specifying for a US panelboard — this part is more commonly used in IEC-based designs. That covers everything from control-circuit tails to main feeder cables, and the combined terminal design means you land the load and the supply on the same clamp — no separate neutral bar needed for the outgoing side. The terminals are touch-protected and sealable, which matters for IP20-rated enclosures where the breaker sits behind a gland plate. The 4-pole body occupies 4 width units (72 mm) with a depth of 76 mm and installation depth of 70 mm. Any mounting position is permitted, and the ambient temperature range is -40 to +75 °C, though humidity derating applies above 55 °C (max 95% RH at 55 °C, tapering to 35% at 75 °C). The halogen-free and silicon-free construction avoids outgassing concerns in sealed enclosures or near sensitive contacts.","metaTitle":"Siemens 5SY7650-8 SENTRON MCB, 4P D-Curve 50A 15kA","metaDescription":"Siemens 5SY7650-8 SENTRON miniature circuit breaker, 4-pole D-curve, 50A rated, 15kA IEC breaking capacity. Active production, UL 1077 listed. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"72 mm","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Wertebereich":"-40 ... +70 °C","Mounting type":"Quick assembly system","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-40 ... +75 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Number of width units":"4","Number of poles / Note":"3P+N","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY7","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"50 A","Tripping characteristic class":"D","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"15 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"15 kA","Product feature / Touch protection":"Yes","Influence of the surrounding temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"15 kA","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"Yes","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"440 V","Mechanical service life (switching cycles) / typical":"10 000","Tightening torque [lbf·in] / with screw-type terminals":"22 ... 31 lbf·in","AWG number / as coded connectable conductor cross section":"18 ... 4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f66097eda944ffbd10aabc0ae1feb4a3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=176413&mlfb=5SY7650-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7650-8/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY7650-8 and get a price?","answer":"This part is 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 commitment."},{"question":"What compliance documentation does the 5SY7650-8 carry?","answer":"The breaker carries ratings under IEC 60947-2 (15 kA), EN 60898 (15 kA), and UL 1077 / CSA C22.2 No. 235 (5 kA). It is halogen-free and silicon-free. RoHS and REACH compliance documentation should be available from the manufacturer's standard declaration package for the SENTRON series."},{"question":"Will the 5SY7650-8 drop into a panel specified around 5SY3132-6?","answer":"Both are 4-pole SENTRON MCBs on the same DIN-rail footprint, so the physical swap is straightforward. However, the 5SY7650-8 is a D-curve 50 A breaker with 15 kA breaking capacity, while the 5SY3132-6 is a different rating and characteristic — verify the branch-circuit protection requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7650-8","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/5SY7650-8 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}}