{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4650-5","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4650-5","canonicalUrl":"https://aoctrl.com/siemens/5SY4650-5","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4650-5","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4650-5 miniature circuit breaker, 4-pole (3P+N), 50 A rated current, tripping characteristic A, 10 kA breaking capacity per EN 60898, 15 kA per IEC 60947-2.","salesMarkdown":"The Siemens 5SY4650-5 is a SENTRON miniature circuit breaker (MCB) rated 50 A at 35 °C with a tripping characteristic A, meaning it trips instantaneously on very low overcurrents — typically 2 to 3 times rated current — making it the right choice for protecting semiconductor circuits, precision electronics, or long cable runs where standard B or C curves would allow damaging current to flow too long before opening. Breaking capacity is 10 kA per EN 60898 (the household / commercial standard) and 15 kA per IEC 60947-2 (the industrial standard) — the higher figure applies when the breaker is installed in an industrial panel with a known fault level up to 15 kA; the 10 kA rating covers the more common domestic / light commercial installation. Four poles, wired as 3P+N — the neutral pole is switched but not protected, so the breaker opens all four conductors on a fault but only the three phase poles have overcurrent detection. ## Temperature derating — the real-world current you can actually run The 50 A rating is at 35 °C ambient inside the enclosure. At 45 °C it derates to 47 A; at 50 °C to 45.95 A; at 55 °C to 44.9 A; at 60 °C to 43.8 A. For a BOM freeze or a panel that was originally specified around a different 4-pole characteristic A MCB, the 5SY4650-5 is a direct form-fit-function replacement as long as the other part also occupies 4 MW and shares the same 50 A / 10 kA / Char A profile — the DIN-rail footprint and terminal layout are standard across the SENTRON 5SY series.","metaTitle":"Siemens 5SY4650-5 SENTRON MCB, 50 A, 4P, Char. A","metaDescription":"Siemens 5SY4650-5 SENTRON miniature circuit breaker, 50 A rated, 4-pole (3P+N), tripping characteristic A, 10 kA (EN 60898) / 15 kA (IEC 60947-2). Active production. Sourced to ord","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY4650-5","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 3+N-pole, A, 50 A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","Type Of Voltage":"AC","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","acc. to IEC 81346-2":"F","at AC / rated value":"50 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"3P+N","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"50 A","at 45 °C / rated value":"47 A","at 50 °C / rated value":"45.95 A","at 55 °C / rated value":"44.9 A","at 60 °C / rated value":"43.8 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"A","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"15 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","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","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Function / Neutral Conductor Switching":"Yes","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e60e188f3f366a69d2644582b8388031.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=333275&mlfb=5SY4650-5"},"ai":{"faq":[{"question":"Where can I buy 5SY4650-5 and how is it quoted?","answer":"The 5SY4650-5 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 5SY4650-5?","answer":"10 kA per EN 60898 and 15 kA per IEC 60947-2 — the higher figure applies in industrial installations where the prospective fault current is known to be up to 15 kA."},{"question":"What does tripping characteristic A mean on this MCB?","answer":"Characteristic A trips instantaneously at 2 to 3 times rated current, making it suitable for protecting semiconductor circuits, sensitive electronics, or long cable runs where a B or C curve would allow damaging overcurrent to persist too long."},{"question":"Will 5SY4650-5 drop into a panel specified around 5SY6613-8 without rewiring?","answer":"Both are 4-pole SENTRON MCBs on the same DIN-rail footprint (4 MW, 72 mm wide), so the mechanical fit is identical. Electrical compatibility depends on the ratings — the 5SY4650-5 is 50 A characteristic A; verify the 5SY6613-8's rating and curve before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4650-5","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/5SY4650-5 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}}