{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4363-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4363-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SL4363-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4363-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4363-8CC, 3-pole miniature circuit breaker, D tripping characteristic, 63 A rated current, 10 kA breaking capacity at 400 V AC, 3 modular width units.","salesMarkdown":"## D-curve 63 A MCB for high-inrush loads The Siemens SENTRON 5SL4363-8CC is a 3-pole miniature circuit breaker rated 63 A with a D tripping characteristic, designed to handle the high inrush currents typical of motor, transformer, and lighting ballast circuits without nuisance tripping. Its 10 kA breaking capacity at 400 V AC (per EN 60898) means it can safely interrupt fault currents up to that level in residential and infrastructure distribution boards. The D-curve (10–20× In magnetic trip) is the deciding spec here: it delays tripping on the short-duration current spikes a motor or power supply draws at startup, so the breaker stays closed during normal inrush. The 63 A continuous rating and 10 kA SCCR at 400 V AC govern the feeder size and the upstream fault capacity the panel must coordinate with. At 72 V DC the breaker is also rated, though the DC breaking capacity is not separately stated — treat the AC 10 kA figure as the primary coordination value. The 440 V maximum for multi-phase operation gives headroom on 400 V line-to-line systems. ## Panel integration and environmental limits The 70 mm installation depth and 76 mm overall depth fit standard distribution boards; the IP20 rating with connected conductors means the busbar area is finger-safe once wired. Operating range spans -40 °C to +75 °C, with derating above 55 °C and 95% humidity — sufficient for unheated electrical rooms or outdoor-rated enclosures. Vibration resistance to 50 m/s² at 25–150 Hz (IEC 60068-2-6) suits installation near rotating machinery.","metaTitle":"Siemens 5SL4363-8CC SENTRON MCB, 3P D 63A 10kA 400V","metaDescription":"Siemens SENTRON 5SL4363-8CC miniature circuit breaker, 3-pole, D-curve, 63 A, 10 kA at 400 V AC. 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":"5SL4363-8CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50 Hz","description":"Miniature circuit breaker 400 V 10kA, 3-pole, D, 63 A Circuit breaker 400 V 10kA, 3-pole, D, 63 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"3","Type Of Voltage":"AC","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","protection class IP":"IP20, with connected conductors","Overvoltage Category":"3","Design Of The Product":"5SL miniature circuit breakers","Number Of Poles / Note":"3P","acc. to DIN EN 61346-2":"F","circuit-breaker / Design":"5SL4CC","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"3","Tripping Characteristic Class":"D","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","Influence Of The Surrounding Temperature":"+55 °C, max. 95% humidity","operational current / at AC / rated value":"63 A","vibration resistance / acc. to IEC 60068-2-6":"50 m/s² at 25 to 150 Hz","with multi-phase operation / at AC / maximum":"440 V","Product Function / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ecda876b63d8adc95415fb3dec67057b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=145429&mlfb=5SL4363-8CC"},"ai":{"faq":[{"question":"What is the 5SL4363-8CC used for?","answer":"It is a 3-pole miniature circuit breaker with D-curve tripping, rated 63 A and 10 kA at 400 V AC, designed for protecting circuits with high inrush currents — motor feeders, transformers, and lighting ballasts in residential and infrastructure distribution boards."},{"question":"Where can I buy the 5SL4363-8CC?","answer":"This part is sourced to order against an RFQ through our independent distribution network. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What is the difference between 5SL4363-8CC and 5SL4363-7?","answer":"The 5SL4363-7 is a functionally similar 3-pole D-curve 63 A MCB from the same SENTRON 5SL4 family, but the -8CC suffix variant includes a sealable design and halogen-free/silicon-free construction. Both share the same 3-module-width footprint and 10 kA breaking capacity, so the -8CC drops into a panel specified for the -7 without rewiring — the physical dimensions and terminal layout are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4363-8CC","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/5SL4363-8CC 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}}