{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6450-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6450-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL6450-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6450-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6450-7MB, miniature circuit breaker, 4-pole, C characteristic, 50 A, 400 V AC, 6 kA breaking capacity per EN 60898, 4 MW units.","salesMarkdown":"## SENTRON 5SL6450-7MB — 4-pole C-curve MCB for 400 V distribution The Siemens SENTRON 5SL6450-7MB is a 4-pole miniature circuit breaker rated 50 A at 400 V AC with a C tripping characteristic and a 6 kA breaking capacity according to EN 60898. The 6 kA breaking capacity at 400 V AC per EN 60898 tells you it can safely interrupt fault currents up to that level without upstream cascading; for higher prospective fault currents you'd step to a 10 kA rated unit like the 5SL4363-7 (3-pole) or 5SY5416-7 (4-pole, 10 kA). Power loss per pole is 3.5 W in hot operating state at rated current — at 4 poles that's 14 W total heat to dissipate inside the enclosure. Factor that into your thermal budget if the board is tightly packed or in a high-ambient location. The 4-module width (72 mm) matches the standard SENTRON 5SL series footprint — it shares the same housing as the 4-pole 5SY series breakers, so cutouts and busbar positions are consistent across the family.","metaTitle":"Siemens 5SL6450-7MB SENTRON MCB, 4P C 50A 400V 6kA","metaDescription":"Siemens SENTRON 5SL6450-7MB miniature circuit breaker, 4-pole, C-curve, 50 A, 400 V AC, 6 kA breaking capacity per EN 60898. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SL6450-7MB","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 6kA, 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":"4","Tripping Characteristic Class":"C","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 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","vibration resistance according to IEC 60068-2-6":"no","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":"3.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5074b2bf02407781b3b498c79d11df2f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=198218&mlfb=5SL6450-7MB"},"ai":{"faq":[{"question":"Where can I buy 5SL6450-7MB and how is it quoted?","answer":"We source the 5SL6450-7MB through independent distribution and quote it to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"Will 5SL6450-7MB drop into a panel specified for 5SL4363-7?","answer":"No — the 5SL4363-7 is a 3-pole breaker (54 mm / 3 MW), while the 5SL6450-7MB is 4-pole (72 mm / 4 MW). The depth (76 mm), height (90 mm), and DIN-rail mounting are identical, but the width and pole count differ, so the panel cutout and busbar arrangement must be sized for 4 poles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6450-7MB","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/5SL6450-7MB 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}}