{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3763-1","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3763-1","canonicalUrl":"https://aoctrl.com/siemens/5SP3763-1","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3763-1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP3763-1 selective miniature circuit breaker (MCB), 3-pole, 63 A rated current, 25 kA breaking capacity at 400 VAC, Class E trip characteristic, IP20.","salesMarkdown":"The Siemens SENTRON 5SP3763-1 is a selective miniature circuit breaker (MCB) — three poles, rated 63 A at 400 VAC, 50 Hz, with a Class E trip curve. That's the spec that matters for selectivity studies: you need this breaker upstream of lower-rated downstream devices to clear a fault before they pop. This isn't a standard thermal-magnetic MCB. The Class E characteristic is a selective (delayed) trip — it holds through short-duration overcurrents so downstream breakers can clear first. That makes it a main or feeder breaker in a distribution panel, not a branch-circuit protector. The 63 A rating and 3-pole construction suit it for three-phase residential or light commercial infrastructure mains, as noted in the suitability listing. That's about 108 mm of rail space. It can also be mounted on a busbar or with screw fixing using accessories. The 20 000 mechanical switching cycles typical service life is solid for a main breaker that sees infrequent operation. Shock resistance is 30 g, 3 impacts at 11 ms duration; vibration resistance is 2 g, 20 frequency cycles from 5 to 150 Hz per IEC 60068-2-6. That covers most industrial environments short of heavy rotating equipment with persistent imbalance.","metaTitle":"Siemens SENTRON 5SP3763-1 Miniature Circuit Breaker, 63 A, 2","metaDescription":"Siemens SENTRON 5SP3763-1 selective MCB, 3-pole, 63 A, 25 kA breaking capacity at 400 VAC, Class E trip curve. IP20. Active lifecycle, sourced to order. RFQ for availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"25 kA","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"standard rail","Saddle Terminals":"Yes","Shock Resistance":"30 g, at least 3 impacts, impact duration 11 ms","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","protection class IP":"IP20, with connected conductors","Overvoltage Category":"IV","Design Of The Product":"Main miniature circuit breaker","Number Of Poles / Note":"3P","acc. to DIN EN 61346-2":"F","Depth / Of The Enclosure":"92 mm","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"6","Tripping Characteristic Class":"E","acc. to EN 60898 / rated value":"25 kA","Position / Of Power Supply Cord":"Any","Insulation Voltage / Rated Value":"690 V","supply voltage / at AC / rated value":"400 V","Supply Voltage Frequency / Rated Value":"50 Hz","Surge Voltage Resistance / Rated Value":"6 kV","operational current / at AC / rated value":"63 A","Fastening Method / Other Installation / Note":"With accessories on 35 mm standard mounting rail or busbar or screw fixing","vibration resistance / acc. to IEC 60068-2-6":"2 g, 20 frequency cycles 5 to 150 to 15 Hz","Display Version / For Switch Position Indicator":"OFF = green, ON = red","Mechanical Service Life (Switching Cycles) / Typical":"20 000"}},"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=250227&mlfb=5SP3763-1","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SP3763-1/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SP3763-1?","answer":"The rated breaking capacity is 25 kA at 400 VAC per EN 60898, making it suitable for high-fault-current mains positions."},{"question":"What does the Class E trip curve mean?","answer":"Class E is a selective (time-delayed) trip characteristic — it allows short overcurrents to pass so downstream breakers can clear first, preventing a total panel blackout on a branch fault."},{"question":"Where can I buy 5SP3763-1?","answer":"This part is sourced 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/5SP3763-1","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/5SP3763-1 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}}