{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6663-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6663-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL6663-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6663-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6663-7MB miniature circuit breaker, 4-pole (3P+N), 63 A, C-curve, 400 V AC, 6 kA breaking capacity per EN 60898 / IEC 60947-2, 4 MW wide, IP20.","salesMarkdown":"The Siemens 5SL6663-7MB is a SENTRON miniature circuit breaker — 4-pole (3P+N), 63 A, C-curve, rated 400 V AC with a 6 kA breaking capacity per both EN 60898 and IEC 60947-2. The 6 kA breaking capacity is standard for domestic and light commercial installations — adequate for most utility-side fault levels, but verify against your point-of-supply SCCR if feeding from a transformer. The C-curve characteristic suits loads with moderate inrush: small motors, pumps, compressors, and groups of lighting ballasts. Snap-on DIN-rail mounting in any position. The 72 mm width (4 MW) and 76 mm depth match standard SENTRON panel cutouts. Sealable terminals allow lockout/tagout compliance. Halogen-free and silicon-free construction. Energy limitation class 3 — meaning it limits let-through energy well enough for most downstream equipment protection.","metaTitle":"Siemens 5SL6663-7MB SENTRON MCB, 63 A, 4-Pole, C-Curve, 6 kA","metaDescription":"Siemens SENTRON 5SL6663-7MB miniature circuit breaker, 63 A, 400 V AC, 4-pole, C-curve, 6 kA breaking capacity per EN 60898. Active production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"72 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P+N","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","according to IEC 60947-2 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","Mechanical Service Life (Operating Cycles) Typical":"20 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"5.1 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/02aad1605277fe8d04875233685c53c5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=220971&mlfb=5SL6663-7MB","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6663-7MB/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 5SL6663-7MB?","answer":"The depth is 76 mm, with an installation depth of 70 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6663-7MB","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/5SL6663-7MB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}