{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4450-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4450-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL4450-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4450-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4450-7RC miniature circuit breaker, 4-pole, C-curve, 50 A, 415 V AC, 10 kA breaking capacity per EN 60898, 1 MW wide.","salesMarkdown":"The Siemens SENTRON 5SL4450-7RC is a 4-pole miniature circuit breaker with a C-tripping characteristic, rated at 50 A and 415 V AC, with a 10 kA breaking capacity according to EN 60898. It's a current-production part from the SENTRON family, designed for residential and infrastructure branch-circuit protection. The 10 kA breaking capacity at 415 V AC per EN 60898 means this MCB can safely interrupt a fault current up to 10,000 A without welding its contacts or rupturing the case — that's the standard for most residential and light commercial distribution boards in IEC markets. At 4.5 W power loss per pole in hot operating state, four poles dissipate 18 W total inside the enclosure. In a crowded DIN-rail panel with limited airflow, that heat adds up — derating the adjacent breakers or leaving a slot's worth of ventilation gap is standard practice. Snap-on mounting to DIN rail, any position. At 18 mm width — one modular unit — this 4-pole breaker occupies four consecutive 18 mm slots. Installation depth is 70 mm, total depth 76 mm. Sealable, halogen-free and silicon-free. Accepts supplementary devices — shunt trip, auxiliary contacts, under-voltage release — for remote tripping or status feedback.","metaTitle":"Siemens 5SL4450-7RC SENTRON MCB, 4P C 50A 10kA","metaDescription":"Siemens SENTRON 5SL4450-7RC miniature circuit breaker, 4-pole, C-curve, 50 A, 415 V AC, 10 kA breaking capacity per EN 60898. Active production, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL4450-7RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 415 V 10kA, 4-pole, C, 50 A","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","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","supply voltage at AC rated value":"415 V","according to EN 60898 rated value":"10 kA","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","with single-phase operation at AC rated value":"250 V","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":"4.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e4ce028f297f28a50bf4f36140584312.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=73903&mlfb=5SL4450-7RC"},"ai":{"faq":[{"question":"Will 5SL4450-7RC drop into a panel that was specified around 5SL4363-7 without rewiring?","answer":"No — the 5SL4363-7 is a 3-pole breaker on a 54 mm (3 MW) footprint, while the 5SL4450-7RC is 4-pole on an 18 mm (1 MW) footprint per pole. The physical width and pole count differ, so a panel designed for the 3-pole unit would need a different DIN-rail layout and additional wiring for the fourth pole."},{"question":"What is the breaking capacity of 5SL4450-7RC?","answer":"10 kA according to EN 60898 at 415 V AC."},{"question":"Where can I buy 5SL4450-7RC?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote (RFQ) to confirm current availability and pricing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4450-7RC","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/5SL4450-7RC 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}}