{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6350-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6350-8","canonicalUrl":"https://aoctrl.com/siemens/5SY6350-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6350-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series, miniature circuit breaker, 3-pole, 50 A, D tripping characteristic, 6 kA per EN 60898 / 10 kA per IEC 60947-2, 400 V AC.","salesMarkdown":"## Siemens SENTRON 5SY6350-8 — 50 A D-Curve MCB for High-Inrush Loads The D curve means the magnetic trip operates at 10–20× In (500–1000 A), so it rides through the starting surge of a 50 A motor load while still clearing a hard short. Rated for 400 V AC and up to 72 V DC (max per IEC 60947-2), this breaker suits both three-phase AC distribution and DC control circuits. The 3-pole block handles a three-phase feeder in one DIN-rail footprint — 3 width units at 54 mm wide, 76 mm deep, 90 mm tall. ## Integration & Mounting Notes The 54 mm width (3 width units) fits a standard 18 mm/module grid. Combined terminal top and bottom — line and load can enter from either direction, which simplifies busbar routing in a crowded panel. Sealable for lockout/tagout. Halogen-free and silicon-free construction. ## Selectivity & Coordination The D characteristic (10–20× In magnetic trip) is the key selectivity differentiator versus a C-curve breaker. For a 50 A feeder feeding downstream sub-circuits with motor loads, the D curve provides enough magnetic-trip separation to avoid cascading trips on start-up. The 10 kA IEC 60947-2 rating gives SCCR headroom for most industrial panel designs — the 6 kA EN 60898 rating is the residential/commercial floor, but the higher IEC figure governs when the breaker is applied per IEC 60947-2 in an industrial context.","metaTitle":"Siemens SENTRON 5SY6350-8 MCB, 3P, 50 A, D Curve, 6/10 kA","metaDescription":"Siemens SENTRON 5SY6350-8 miniature circuit breaker, 3-pole, 50 A, D tripping characteristic, 6 kA (EN 60898) / 10 kA (IEC 60947-2) breaking capacity. Current lifecycle stage. Sour","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Rated Value":"50/60 Hz","Mounting type":"Quick assembly system","Number Of Poles":"3","Type Of Voltage":"AC","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree of pollution":"3","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":"3","Number of poles / Note":"3P","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY6","Suitability for operation":"Mechanical engineering / industry","Product feature / sealable":"Yes","Tripping characteristic class":"D","at DC / rated value / maximum":"72 V","Product Feature / Halogen-Free":"Yes","Product Feature / Silicon-Free":"Yes","acc. to EN 60898 / rated value":"6 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"10 kA","Product feature / Touch protection":"Yes","Operating current / at AC / rated value":"50 A","Reference code / acc. to DIN EN 81346-2":"F","reference code / acc. to DIN EN 61346-2":"F","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","Product function / neutral conductor switching":"No","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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=274635&mlfb=5SY6350-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6350-8/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY6350-8 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of 5SY6350-8?","answer":"6 kA per EN 60898 and 10 kA per IEC 60947-2 at 400 V AC. For DC applications, the breaking capacity is 15 kA per IEC 60947-2 at up to 72 V DC."},{"question":"What compliance documentation does Siemens provide for 5SY6350-8?","answer":"The breaker carries approvals per EN 60898, IEC 60947-2, UL 1077 and CSA C22.2 No.235. It is halogen-free and silicon-free. Reference codes per DIN EN 81346-2 and DIN EN 61346-2 are F."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6350-8","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/5SY6350-8 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}}