{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4350-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4350-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4350-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4350-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4350-7CC, 3-pole miniature circuit breaker, C characteristic, 50 A AC, 10 kA breaking capacity per EN 60898, IP20.","salesMarkdown":"The Siemens 5SY4350-7CC is a SENTRON 3-pole miniature circuit breaker with a C tripping characteristic, rated 50 A at AC and 40 °C ambient. It carries a 10 kA breaking capacity per EN 60898, which means it can safely interrupt fault currents up to that level on a 50/60 Hz supply — standard for protecting branch circuits in industrial control panels and distribution boards. ## What the ratings mean for fit The C-curve (tripping between 5 and 10 times rated current) is the go-to for moderate inrush loads like small motors, transformers, and lighting banks — it holds through the start-up spike without nuisance trips. At 50 A rated current, this breaker handles a 50 A continuous load at 35 °C; derate to 47 A at 40 °C, 45.45 A at 45 °C, 43.8 A at 50 °C, and 42.1 A at 55 °C. If your panel ambient runs hot, size the load against the derated figure, not the headline 50 A. The 10 kA breaking capacity per EN 60898 is the standard for residential and light commercial final circuits. For industrial installations where the prospective short-circuit current is higher, check whether your fault level stays under 10 kA — if it exceeds that, you need a higher-rated breaker or a current-limiting upstream device. IP20 with connected conductors means the breaker is protected against finger contact but not against moisture or dust ingress — it belongs inside a sealed enclosure, not on an open panel face in a washdown area. Pollution degree 3 and overvoltage category III confirm it's rated for fixed installations in industrial environments where transient overvoltages are expected. ## Mounting and integration Snaps onto DIN rail via the quick assembly system, occupies 3 modular width units (54 mm). Depth is 76 mm, installation depth 70 mm — check gland plate clearance if the enclosure is shallow. Mounting position any, so vertical or horizontal rail orientation is fine. Combined terminal top and bottom means the line and load conductors land on the same terminal type, simplifying wiring. Sealable design allows the installer to lock the toggle in the off position for lockout/tagout compliance. Halogen-free and silicon-free construction matters if the breaker sits in a clean room or near sensitive electronics where outgassing could cause contact corrosion.","metaTitle":"Siemens 5SY4350-7CC SENTRON MCB, 3P C-Curve 50A, 10kA","metaDescription":"Siemens 5SY4350-7CC SENTRON miniature circuit breaker, 3-pole, C characteristic, 50 A rated at 40 °C, 10 kA breaking capacity per EN 60898. 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":"5SY4350-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 3-pole, C, 50 A","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","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","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 A","at 45 °C rated value":"45.45 A","at 50 °C rated value":"43.8 A","at 55 °C rated value":"42.1 A","Energy Limitation Class":"3","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","according to EN 60898 rated value":"10 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","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Switching 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":"3.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5aefed3496447f2e30e4985497b4ed06.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=302764&mlfb=5SY4350-7CC"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SY4350-7CC?","answer":"10 kA rated breaking capacity per EN 60898 at AC, which is the standard for final circuits in residential and light commercial installations."},{"question":"What is the 5SY4350-7CC used for?","answer":"It's a 3-pole miniature circuit breaker with C characteristic, rated 50 A, used for branch circuit protection in distribution boards and control panels — particularly for loads with moderate inrush like small motors, transformers, and lighting."},{"question":"Where can I buy the 5SY4350-7CC?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."},{"question":"Will the 5SY4350-7CC drop into a panel specified for 5SY4332-7CV?","answer":"Both are 3-pole SENTRON MCBs with the same 3-module width (54 mm) and DIN-rail mounting, so the mechanical fit is identical. The difference is rating: 5SY4332-7CV is a 32 A C-curve; the 5SY4350-7CC is 50 A C-curve. As long as the circuit load and upstream protection are sized for 50 A, it's a drop-in swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4350-7CC","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/5SY4350-7CC 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}}