{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6463-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6463-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SL6463-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6463-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6 series, miniature circuit breaker, 4-pole, D tripping characteristic, 63 A rated current, 6 kA breaking capacity at 400 V AC.","salesMarkdown":"## What this 4-pole D-curve 63 A MCB does for your panel The 4 MW (72 mm) width on DIN rail matches the standard 4-module footprint; any mounting position is acceptable, so it fits tight enclosures without derating. ## D-curve and 63 A — why that matters for motor and transformer circuits A D-curve MCB holds through the 10–20× In magnetic trip zone, which means it passes the starting surge of a 63 A-rated motor or a 63 A-rated transformer without clearing. The 63 A continuous rating at 400 V AC gives roughly 43 kW of three-phase motor load (at 0.85 PF) before the thermal element begins to move. For an ammonia compressor or a cold-store condenser fan group, that D-curve is the difference between a clean start and a nuisance trip every time the contactor pulls in. If your panel feeds a transformer with higher SCCR, you will need upstream current-limiting fuses or a higher-rated MCCB to keep the 5SL6463-8CC within its rated short-circuit capacity. ## Lifecycle and sourcing — active, not a phase-out part The SENTRON 5SL6 series is Siemens' standard MCB family for residential and infrastructure duty. The 5SL6463-8CC is the 4-pole, 63 A, D-curve variant with 6 kA breaking capacity. No official successor has been announced, and no phase-out date is on record. ## Mounting and wiring — what fits and what does not The 72 mm width occupies four 18 mm module spaces. Terminal screws accept solid or stranded copper from 0.75 mm² up to 25 mm²; tighten to 2.5–3 N·m. ## Environmental limits — cold-store and freezer considerations That covers most refrigerated spaces down to -25 °C ambient; below that, the thermal trip element may shift and the breaker could nuisance-trip or fail to trip on overload. In a -30 °C freezer room, locate the MCB in a heated panel enclosure or use a cold-rated supplementary protector. Maximum operating humidity is periodically 55 °C with 95% relative humidity — typical for unheated electrical rooms in cold stores where condensation forms on the panel door. The IP20 enclosure does not prevent internal condensation; a panel heater or breather drain is recommended.","metaTitle":"Siemens SENTRON 5SL6463-8CC MCB, 4P D 63 A 6 kA","metaDescription":"Siemens SENTRON 5SL6463-8CC miniature circuit breaker, 4-pole, D-curve, 63 A, 6 kA breaking capacity at 400 V AC. Active lifecycle, available to order. IP20, 4 MW.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 25 mm²","Width":"72 mm","title":"5SL6463-8CC","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","description":"Miniature circuit breaker 400 V 6kA, 4-pole, D, 63 A Circuit breaker 400 V 6kA, 4-pole, D, 63 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Wertebereich":"-25 ... +45 °C","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-40 ... +75 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"5SL miniature circuit breakers","Number of width units":"4","Number of poles / Note":"4P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SL6CC","Suitability for operation":"Residential buildings/infrastructure","Current / at AC / rated value":"63 A","Tripping characteristic class":"D","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"6 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"400 V","Influence of the surrounding temperature":"Periodically +55°C, max. 95% humidity","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","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","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/3b57e28b16ea199b053ea494d6244378.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=127817&mlfb=5SL6463-8CC"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6463-8CC","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/5SL6463-8CC 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}}