{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4350-7CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4350-7CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4350-7CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4350-7CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4, 3-pole MCB, 50 A, C characteristic, 15 kA breaking capacity per IEC/EN 60947-2, 440 V AC, IP20.","salesMarkdown":"The 5SY4350-7CV is a 3-pole miniature circuit breaker rated 50 A at 35 °C with a C tripping characteristic — magnetic trip fires between 5 and 10 times In, so it handles moderate inrush from motor starters or lighting banks without nuisance trips. The 50 A rating derates to 47.25 A at 40 °C and 44.3 A at 50 °C; if your panel ambient runs hot, size the upstream breaker accordingly. The 54 mm width (3 modular units) and 76 mm depth leave room for adjacent devices in a crowded enclosure. The 5SY4332-7CV is the same 3-pole C-curve family but rated 32 A instead of 50 A. Both share the 15 kA breaking capacity, the same 54 mm width, and the same mounting footprint. If your BOM calls for 32 A, the 5SY4350-7CV will physically fit the same DIN-rail slot but is overrated — you would lose the overcurrent protection coordination. Stick with the ampacity your circuit demands.","metaTitle":"5SY4350-7CV MCB, 3P, 50 A, C-curve, 15 kA IEC 60947-2","metaDescription":"5SY4350-7CV miniature circuit breaker, 3-pole, 50 A, C characteristic, 15 kA breaking capacity per IEC/EN 60947-2. Current 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":"5SY4350-7CV","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60947-2","description":"MCB Icu=15KA 400V 3P C50","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","at AC rated value":"50 A","Installation Depth":"70 mm","Degree Of Pollution":"3","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","at 35 °C rated value":"50 A","at 40 °C rated value":"47.25 A","at 45 °C rated value":"45.8 A","at 50 °C rated value":"44.3 A","at 55 °C rated value":"42.75 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":"3","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","Supply Voltage Frequency Rated Value":"50/60 Hz","according to IEC 60947-2 rated value":"15 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","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","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","power loss [W] for rated value of the current at AC in hot operating state per pole":"4.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1f29130225ca9b4552a131f702596964.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531602&mlfb=5SY4350-7CV"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4350-7CV?","answer":"15 kA at 440 V AC per IEC/EN 60947-2, which is the standard for industrial MCBs in this class."},{"question":"Where can I buy 5SY4350-7CV and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — no stock count or price is listed here."},{"question":"Will 5SY4350-7CV drop into a panel specified around 5SY4332-7CV without rewiring?","answer":"Yes — same 3-pole footprint, same 54 mm width, same DIN-rail mounting. The only difference is the 50 A rating versus 32 A; verify your circuit's ampacity before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4350-7CV","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/5SY4350-7CV 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}}