{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4363-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4363-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4363-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4363-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4363-7CC miniature circuit breaker, 3-pole, C characteristic, 63 A rated current, 10 kA breaking capacity per EN 60898, 440 V AC.","salesMarkdown":"## Rated current and thermal derating The Siemens 5SY4363-7CC is a 3-pole miniature circuit breaker from the SENTRON series, rated 63 A at AC with a C tripping characteristic. That C-curve means it trips between 5× and 10× rated current — standard for motor-starting and moderate inrush loads in industrial control panels. Per the datasheet, the 63 A rating holds at 35 °C ambient; at 40 °C it derates to 60.04 A, at 45 °C to 58.46 A, at 50 °C to 56.89 A, and at 55 °C to 55.25 A. If your panel ambient runs above 35 °C, apply that curve to avoid nuisance tripping. ## Breaking capacity and coordination Breaking capacity is 10 kA per EN 60898 at 440 V AC, 50/60 Hz. That 10 kA figure is the prospective fault current the breaker can safely interrupt under standard test conditions. For a panel with a higher available fault current — say 18 kA at the service entrance — this breaker needs an upstream current-limiting device to keep the let-through within its rating. Overvoltage category III and pollution degree 3 suit it for fixed-installation distribution boards, not for plug-in equipment. ## Mounting and integration Snaps onto DIN rail via the quick-assembly system, occupying 3 modular width units (54 mm). Depth is 76 mm, installation depth 70 mm behind the panel face. Mounting position is any — vertical, horizontal, or flat — so it fits tight enclosures without derating for orientation. The combined terminal top and bottom accept conductors without separate busbar adapters. IP20 with connected conductors means it's protected against finger contact but not against water ingress; keep it inside a closed cabinet.","metaTitle":"Siemens 5SY4363-7CC SENTRON MCB, 63A 3P C-Curve, 10kA","metaDescription":"Siemens 5SY4363-7CC SENTRON miniature circuit breaker, 63 A rated, 3-pole, C characteristic, 10 kA breaking capacity per EN 60898. Active production. Sourced to order; confirm curr","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY4363-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 3-pole, C, 63A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","at AC / rated value":"63 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Energy Limitation Class":"3","according to EN 61346-2":"F","at 35 °C / rated value":"63 A","at 40 °C / rated value":"60.04 A","at 45 °C / rated value":"58.46 A","at 50 °C / rated value":"56.89 A","at 55 °C / rated value":"55.25 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"3","Tripping Characteristic Class":"C","Position / Of Power Supply Cord":"Any","according to EN 60898 / rated value":"10 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage / Of The Operating Voltage":"AC","Value Range / Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","vibration resistance / according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b193ade7c831bec82c980fae3641d980.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=251542&mlfb=5SY4363-7CC"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY4363-7CC?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time; the part is sourced to order through independent distribution."},{"question":"What is the closest functional second-source to 5SY4363-7CC?","answer":"Within the SENTRON 5SY series, the 5SY4304-7CV is a lower-current sibling (4 A, C-curve, same 3-pole, 10 kA breaking capacity). It shares the same DIN-rail footprint, terminal design, and environmental ratings, so it drops into the same panel position without rewiring — but the current rating is different, so it is not a direct functional substitute for a 63 A circuit."},{"question":"Will 5SY4363-7CC drop into a panel specified around 5SY4304-7CV without rewiring?","answer":"Yes, the 5SY4363-7CC shares the same 3-module-wide DIN-rail footprint, terminal layout, and mounting position (any) as the 5SY4304-7CV. No rewiring of the busbar or enclosure cutout is needed — just swap the breaker and verify the higher 63 A rating matches the circuit protection requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4363-7CC","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/5SY4363-7CC 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}}