{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3363-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3363-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL3363-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3363-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3363-7MB miniature circuit breaker, 3-pole, C-curve, 63 A, 400 V AC, 4.5 kA breaking capacity per EN 60898, 3 MW units wide.","salesMarkdown":"## What it is and what the ratings mean for fit The Siemens SENTRON 5SL3363-7MB is a 3-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated at 63 A and 400 V AC. The C-curve means it trips between 5 and 10 times rated current — standard for general-purpose loads like lighting, socket outlets, and small motor circuits where moderate inrush is expected. The 4.5 kA breaking capacity per EN 60898 tells you it can safely interrupt a fault current up to that level at 400 V without welding contacts or cascading damage upstream. That rating suits residential and light commercial infrastructure panels; for industrial distribution boards with higher prospective fault currents, the 10 kA-rated sibling 5SL4363-7 would be the fit. ## Where it goes and how it mounts Snaps onto a standard 35 mm DIN rail — any mounting position works. At 54 mm wide (3 modular-width units), it occupies three 18 mm slots in the enclosure. Installation depth is 70 mm behind the panel face; overall depth is 76 mm. The IP20 rating with connected conductors means it's protected against finger contact but not moisture — standard for dry indoor distribution boards. Sealable design allows the installer to lock the toggle position after commissioning. ## Environmental and compliance notes Rated for ambient temperatures from -40 °C to 75 °C, covering most indoor and sheltered outdoor enclosures. Halogen-free and silicon-free construction — relevant for installations where outgassing during a fault must be minimized (e.g., occupied spaces, sensitive electronics nearby). Overvoltage category III and pollution degree 2 are standard for fixed-installation distribution boards. Power loss per pole is 4.4 W at rated current in hot operating state — factor that into enclosure thermal calculations if the panel is densely populated.","metaTitle":"Siemens 5SL3363-7MB SENTRON MCB, 3P C-Curve 63 A 4.5 kA","metaDescription":"Siemens SENTRON 5SL3363-7MB miniature circuit breaker, 3-pole, C-curve, 63 A, 400 V AC, 4.5 kA breaking capacity per EN 60898. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","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":"3","Tripping Characteristic Class":"C","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"4.5 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":"4.4 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=125480&mlfb=5SL3363-7MB","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL3363-7MB/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL3363-7MB?","answer":"The 5SL3363-7MB has a 4.5 kA breaking capacity according to EN 60898 at 400 V AC. For applications requiring 10 kA, the sibling 5SL4363-7 is the correct choice."},{"question":"Will 5SL3363-7MB fit in a panel designed for 5SL4363-7?","answer":"Yes, the 5SL3363-7MB has the same physical dimensions (76 mm depth, 54 mm width, 90 mm height) and DIN-rail mounting as the 5SL4363-7, so it drops in without rewiring. The key difference is the breaking capacity: 4.5 kA vs 10 kA."},{"question":"Where can I buy 5SL3363-7MB and how is it quoted?","answer":"The 5SL3363-7MB is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3363-7MB","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/5SL3363-7MB 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}}