{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SN6450-7CN","brand":"Siemens","brandSlug":"siemens","productSlug":"5SN6450-7CN","canonicalUrl":"https://aoctrl.com/siemens/5SN6450-7CN","factsUrl":"https://aoctrl.com/api/mcp/products/5SN6450-7CN","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 4-pole, C-curve, 50 A, 6 kA per EN 60898, 400 V AC, 4 MW units.","salesMarkdown":"The Siemens 5SN6450-7CN is a SENTRON miniature circuit breaker (MCB) rated 50 A with a C tripping characteristic, 4 poles, and a 6 kA breaking capacity per EN 60898 at 400 V AC. Pollution degree 2 covers normal industrial environments with only non-conductive contamination that might become temporarily conductive due to condensation. ## Sourcing and lifecycle — what to expect The MCB is sealable, halogen-free, and silicon-free — relevant for installations in clean rooms, food processing, or areas with sensitive electronics where outgassing or corrosion from halogens or silicones is a concern. ## Integration notes — panel fit and wiring The 5SN6450-7CN accepts solid conductors up to 25 mm² at the terminals — enough for 50 A on a 4-pole breaker, but watch the torque spec in the datasheet. The power loss per pole at rated current in hot operating state is 3.6 W, so for a 4-pole unit you're looking at about 14.4 W total heat dissipation inside the enclosure. Factor that into your thermal budget, especially if the panel is sealed or has multiple MCBs in a row. If the panel sits in a hot, humid environment without climate control, the MCB will handle it, but the surrounding temperature influence may shift the thermal trip curve — derate if you're running near the 50 A limit at elevated ambient.","metaTitle":"Siemens 5SN6450-7CN SENTRON MCB, 4P, C-Curve, 50A, 6kA","metaDescription":"Siemens SENTRON 5SN6450-7CN miniature circuit breaker, 4-pole, C-curve, 50 A rated, 6 kA breaking capacity per EN 60898, 400 V AC. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SN6450-7CN","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 400V, 6kA, 4-pole, C, 50A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","at DC rated value maximum":"72 V","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","Product Feature Touch Protection":"Yes","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","Supply Voltage Frequency Rated Value":"50 Hz","Influence Of The Surrounding Temperature":"Periodically +55°C, max. 95% humidity","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","Product Component Neutral Conductor Switching":"No","vibration resistance according to IEC 60068-2-6":"50 m/s² at 25 to 150 Hz","Connectable Conductor Cross-Section Solid Maximum":"25 mm²","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"3.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fed9560f800c32bab3ce3d7fbb671a8e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=191489&mlfb=5SN6450-7CN"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SN6450-7CN?","answer":"The breaking capacity is 6 kA according to EN 60898 at 400 V AC. This is the Icn rating — the maximum prospective short-circuit current the MCB can safely interrupt at its rated voltage."},{"question":"Will the 5SN6450-7CN drop into a panel specified for the 5SL4363-7?","answer":"The 5SN6450-7CN is 72 mm wide (4 MW units) versus 54 mm (3 MW) for the 5SL4363-7, so it takes up one extra module width. Depth (76 mm) and height (90 mm) are identical, and both mount on DIN rail. If the panel has the spare width, it will fit mechanically, but the 5SN6450-7CN is a 4-pole unit while the 5SL4363-7 is 3-pole — you're adding the neutral pole."},{"question":"Where can I buy the 5SN6450-7CN and how is it quoted?","answer":"The 5SN6450-7CN is sourced to order through independent distribution. Submit an RFQ for current pricing and lead time — availability and price are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SN6450-7CN","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/5SN6450-7CN 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}}