{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6363-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6363-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL6363-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6363-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6363-7MB, miniature circuit breaker, 3-pole, 400 V AC, tripping characteristic C, 63 A, 6 kA breaking capacity per EN 60898, 3 modular width units.","salesMarkdown":"## What this part is and what it does The Siemens 5SL6363-7MB is a SENTRON miniature circuit breaker — a 3-pole, 63 A, C-curve device rated for 400 V AC service with a 6 kA breaking capacity in accordance with EN 60898. That 6 kA figure governs its use in residential and infrastructure branch circuits where the prospective fault current stays under that threshold; it is not rated for industrial high-fault applications per IEC 60947-2. The C-curve trips between 5 and 10 times rated current, which means it handles moderate inrush from motor loads or transformers without nuisance tripping while still clearing a hard short. ## Physical fit and panel integration The 5SL6363-7MB occupies 3 modular width units (54 mm) on a DIN rail and has a depth of 76 mm with an installation depth of 70 mm. It mounts in any position, which simplifies layout in a crowded enclosure. The IP20 rating with connected conductors means it is protected against finger contact but not against moisture — standard for panel-mounted breakers; keep it behind a sealed gland plate in washdown zones. ## What the ratings mean for the buyer The 63 A rating at 400 V AC is the continuous current the breaker carries without tripping. The 6 kA breaking capacity per EN 60898 is the maximum fault current it can safely interrupt — if your panel's prospective short-circuit current exceeds 6 kA, this breaker will not clear the fault and you need a higher-rated device. The C-curve characteristic (5-10x In) is the standard choice for general-purpose distribution where loads have a modest inrush; if your circuit feeds electronics or long cable runs, a B-curve would trip faster on a fault, but for motor or transformer branch circuits the C-curve is the right call.","metaTitle":"Siemens 5SL6363-7MB SENTRON MCB, 3P C 63A 6kA","metaDescription":"Siemens SENTRON 5SL6363-7MB miniature circuit breaker, 3-pole, 400 V AC, C-curve, 63 A, 6 kA breaking capacity per EN 60898. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SL6363-7MB","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 6kA, 3-pole, C, 63 A","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":"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","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4f0f150538005297c635f1b9a01bdc4b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=444047&mlfb=5SL6363-7MB"},"ai":{"faq":[{"question":"Where can I buy the 5SL6363-7MB?","answer":"The 5SL6363-7MB is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"Will the 5SL6363-7MB drop into a panel specified for the 5SL4363-7?","answer":"Yes. Both breakers share the same 76 mm depth, 54 mm width (3 modular units), DIN-rail mounting, and terminal layout. A swap requires no rewiring or panel rework — just replace the breaker. The difference is breaking capacity: 6 kA vs 10 kA."},{"question":"What is the 5SL6363-7MB's depth?","answer":"The 5SL6363-7MB has a depth of 76 mm, with an installation depth of 70 mm. This is the same as the 5SL4363-7 sibling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6363-7MB","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/5SL6363-7MB 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}}