{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP9263-7KC47","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP9263-7KC47","canonicalUrl":"https://aoctrl.com/siemens/5SP9263-7KC47","factsUrl":"https://aoctrl.com/api/mcp/products/5SP9263-7KC47","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP9 series, miniature circuit breaker (MCB), 2-pole, C-tripping characteristic, 63 A rated current, 50 kA breaking capacity per IEC 60947-2, 400 V AC, 50 Hz, tunnel terminals, halogen-free, silicon-free.","salesMarkdown":"The C-curve means it tolerates inrush currents 5–10 times the rated current before tripping magnetically — the standard choice for motor and transformer branch circuits where the starting surge would nuisance-trip a B-curve breaker. The 63 A rating on a 2-pole frame means this breaker handles a 400 V AC, 50 Hz single-phase or two-leg load up to that continuous current. The tunnel terminals accept solid or stranded conductors from 0.75 mm² up to 50 mm² (AWG 14 to 2/0), which is a wide grip — it lands a 50 mm² feeder without needing a pin lug or reducer. Terminal torque spec is 2.5–3.5 N·m (22–31 lbf·in), so a standard screwdriver with a torque-limiting handle is the right tool; under-torquing on a 50 mm² conductor creates a high-resistance joint that runs hot. Mounts on standard DIN rail or with screw fixing, any orientation. At 3 width units (roughly 54 mm on a 18 mm/module rail), it occupies three adjacent slots — plan the gland plate and wireway fill accordingly. This MCB is designed for DIN-rail mounting in industrial distribution boards, sub-distribution panels, and machine control cabinets. The 2-pole C-curve 63 A profile makes it a natural fit for feeding a downstream sub-panel, a large single-phase load (e.g., a 400 V heating element or a 230 V load across one pole), or as the branch-circuit protection for a group of motor starters where the combined running current stays under 63 A. Halogen-free and silicon-free construction matters in environments where off-gassing from a fault could damage sensitive electronics or where silicone contamination interferes with paint adhesion or contact reliability. The -25 to +45 °C ambient range covers most indoor industrial panels; storage tolerance down to -40 °C is fine for unheated warehouses. Shock and vibration ratings per IEC 60068-2-27 and IEC 60068-2-6 confirm it survives transport and moderate machine vibration without nuisance tripping.","metaTitle":"Siemens 5SP9263-7KC47 SENTRON MCB, 2P C 63A 50kA","metaDescription":"Siemens SENTRON 5SP9263-7KC47 miniature circuit breaker, 2-pole, C-curve, 63 A, 50 kA breaking capacity per IEC 60947-2. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Solid":"0.75 ... 50 mm²","Sealable":"Yes","Stranded":"0.75 ... 50 mm²","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Standard mounting rail and screw fixing","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC/DC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"92 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +45 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"440 V","Overvoltage category":"3","Tunnel terminals top":"Yes","Design of the product":"5SP Miniature circuit breakers","Number of width units":"3","Number of poles / Note":"2P","Tunnel terminals bottom":"Yes","circuit-breaker / Design":"5SP9","Current / at AC / rated value":"63 A","Tripping characteristic class":"C","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"50 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"400 V","Supply voltage frequency / rated value":"50 Hz","Influence of the surrounding temperature":"Periodically +55°C, max. 95% humidity","Shock resistance / acc. to IEC 60068-2-27":"150m/s² at 11ms half-sine","Vibration resistance / acc. to IEC 60068-2-6":"50m/s² at 25 to 150Hz and 60m/s² at 35Hz (4sec)","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Mechanical service life (switching cycles) / typical":"20 000","Tightening torque [lbf·in] / with screw-type terminals":"22 ... 31 lbf·in","AWG number / as coded connectable conductor cross section":"14 ... 2"}},"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=390665&mlfb=5SP9263-7KC47","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SP9263-7KC47/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP9263-7KC47","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/5SP9263-7KC47 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}}