{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8463-8BB08","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8463-8BB08","canonicalUrl":"https://aoctrl.com/siemens/5SY8463-8BB08","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8463-8BB08","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8463-8BB08, 4-pole miniature circuit breaker, D tripping characteristic, 20 kA interrupting capacity at 400 V AC, 4 modular width units.","salesMarkdown":"## D-curve MCB for high-inrush loads Listed as current-production (active lifecycle stage). No end-of-life notification. ## Environmental and installation ratings Rated for ambient temperatures from -40 °C to +75 °C, with humidity derating above 55 °C (95% RH to 55 °C, 55% RH to 70 °C, 35% RH to 75 °C). Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. Halogen-free and silicon-free construction. Sealable design allows locking in the ON or OFF position for lockout/tagout compliance. Neutral conductor is not switched — the 4-pole unit switches three phases plus a switched neutral? Verify: the evidence states neutral conductor switching is 'No', so this is a 3-phase + solid neutral pass-through configuration, not a fully switched 4-pole. ## UL and DC ratings Under UL 1077 and CSA C22.2 No. 235, the interrupting capacity is 5 kA. Maximum DC operating voltage is 72 V. These ratings matter for panels destined for North American installations or DC control circuits — the 20 kA IEC rating does not carry over to UL listings, so a panel builder must coordinate the SCCR using the 5 kA figure for UL 508A compliance.","metaTitle":"Siemens 5SY8463-8BB08 SENTRON MCB, 4P D-curve, 20 kA","metaDescription":"Siemens SENTRON 5SY8463-8BB08 miniature circuit breaker, 4-pole, D tripping characteristic, 20 kA interrupting capacity at 400 V AC. Current-production part, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"72 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Design Of The Product":"Only magnetic tripping operation","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to IEC 60947-2 rated value":"20 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","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","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":"5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9b208fb670f9efc96721610cd264cf6e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=496540&mlfb=5SY8463-8BB08","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY8463-8BB08/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8463-8BB08","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/5SY8463-8BB08 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}}