{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3863-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3863-2","canonicalUrl":"https://aoctrl.com/siemens/5SP3863-2","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3863-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON main miniature circuit breaker, 5SP3863-2, 3-pole, 63 A at 400 V AC, 25 kA breaking capacity per EN 60898, E tripping characteristic, busbar mount.","salesMarkdown":"The Siemens 5SP3863-2 is a SENTRON main miniature circuit breaker rated 63 A at 400 V AC, 50 Hz, with a 25 kA breaking capacity certified per EN 60898. Three-pole construction, busbar-mounted, occupying 4.5 modular width units on a 40 mm busbar system per DIN 43870 Part 2. For a main breaker in a residential or light commercial panel, 25 kA covers most utility transformer fault levels. The insulation voltage (Ui) is rated 690 V, and overvoltage category IV means it is suitable for the service entrance. Fastens directly onto a 40 mm busbar system per DIN 43870 Part 2 — no DIN rail adapter needed. Infeed at the box terminal; the design assumes power supply from the lower section of the meter panel. Sealable via locking slide with lock, wire seal, cable ties, or Antilux. Depth is 89.5 mm; enclosure depth is 76.3 mm. ## Thermal derating and ambient range Rated 63 A at 30 °C ambient. Derates to 59.85 A at 40 °C, 58.275 A at 45 °C, 56.7 A at 50 °C, and 55.125 A at 55 °C. Shock resistance: 30 g, at least 3 impacts, 11 ms duration. Surge voltage resistance rated 6 kV.","metaTitle":"Siemens 5SP3863-2 SENTRON Main MCB, 63 A, 25 kA, E-Char","metaDescription":"Siemens 5SP3863-2 SENTRON main miniature circuit breaker, 63 A at 400 V AC, 25 kA breaking capacity per EN 60898, E tripping characteristic, 3-pole, busbar mount. Current productio","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"89.5 mm","title":"5SP3863-2","Height":"151.3 mm","Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"25 kA","description":"Main miniature circuit breaker (SHU), 3x 1-pole, E 63A, 230/400 V Mounting on 40 mm busbars","Solid Maximum":"50 mm²","Solid Minimum":"2.5 mm²","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"Busbar","Shock Resistance":"30 g, at least 3 impacts, impact duration 11 ms","Stranded Maximum":"50 mm²","Stranded Minimum":"2.5 mm²","at AC rated value":"63 A","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP40, with connected conductors","Overvoltage Category":"IV","Design Of The Product":"Main miniature circuit breaker","at 30 °C rated value":"63 A","at 40 °C rated value":"59.85 A","at 45 °C rated value":"58.275 A","at 50 °C rated value":"56.7 A","at 55 °C rated value":"55.125 A","Depth Of The Enclosure":"76.3 mm","Fastening Method Other":"on 40-mm busbar system in compliance with DIN 43870 Part 2","Infeed At Box Terminal":"Yes","Suitability For Operation":"Residential buildings/infrastructure","Design Of The Locking Device":"Locking slide with lock, additional wire seal, cable ties and Antilux","Number Of Modular Width Units":"4.5","Position Of Power Supply Cord":"Stipulated by installation in the lower section of the meter panel","Tripping Characteristic Class":"E","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"25 kA","insulation voltage (Ui) rated value":"690 V","Supply Voltage Frequency Rated Value":"50 Hz","Surge Voltage Resistance Rated Value":"6 kV","Outgoing Feeder Via Spring-Loaded Terminal":"Yes","Display Version For Switch Position Indicator":"OFF = green, ON = red","vibration resistance according to IEC 60068-2-6":"2 g, 20 frequency cycles 5 to 150 to 15 Hz","Mechanical Service Life (Operating Cycles) Typical":"20 000","power loss [W] for rated value of the current at AC in hot operating state per pole":"9.7 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/34a5cd9a8044e4d0fb04ac064667b8ac.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=109257&mlfb=5SP3863-2"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SP3863-2?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What is the depth of 5SP3863-2?","answer":"The overall depth is 89.5 mm; the enclosure depth is 76.3 mm."},{"question":"What is the height of 5SP3863-2?","answer":"The height is 151.3 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3863-2","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/5SP3863-2 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}}