{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6450-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6450-7","canonicalUrl":"https://aoctrl.com/siemens/5SJ6450-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6450-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ6 miniature circuit breaker, 4-pole, C-curve, 50 A, 6 kA breaking capacity, 400 V AC, 70 mm depth.","salesMarkdown":"The Siemens 5SJ6450-7 is a SENTRON 5SJ6 miniature circuit breaker rated 50 A at 400 V AC with a C tripping characteristic and a 6 kA breaking capacity certified to both EN 60898 and IEC 60947-2. The C-curve means it tolerates inrush currents 5–10× the rated current before tripping magnetically — sized for motor and transformer branch circuits where the start-up surge exceeds the thermal threshold but stays within the magnetic hold range. Four poles in a single 4-module-width housing (70 mm deep) let you switch three phases plus neutral in one DIN-rail footprint, saving a row of terminal blocks and a separate neutral link. Four modular width units (each 18 mm) means it occupies 72 mm of rail space; plan your fill factor accordingly. IP20 with connected conductors is the expected finger-safe rating for an enclosed distribution board; the touch-protected terminals meet the VDE 0106 requirement for live-part guarding during panel wiring. The 5SJ6450-7 carries a current lifecycle stage from Siemens, meaning it remains in the active catalog and is not subject to a last-time-buy or phase-out notice as of the latest manufacturer data. For BOM-freeze planning, the 5SJ6 series is a mature, widely deployed platform with consistent lead times across the range. Halogen-free and silicon-free construction suits installations in clean rooms, data centers, or areas where outgassing from a fault event must be minimized. Vibration resistance tested to 50 m/s² at 25–150 Hz and 60 m/s² at 10–150 Hz per IEC 60068-2-6, so it holds up on machine-mounted sub-panels near rotating equipment.","metaTitle":"Siemens 5SJ6450-7 SENTRON MCB, 4P C 50A 6kA 400V","metaDescription":"Siemens 5SJ6450-7 SENTRON miniature circuit breaker, 4-pole, C-curve, 50 A, 6 kA breaking capacity per EN 60898/IEC 60947-2, 400 V AC. Quoted to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","Type Of Voltage":"AC/DC","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breakers","protection class IP":"IP20, with connected conductors","Overvoltage Category":"3","Design Of The Product":"Miniature circuit breaker 5SJ6","Number Of Poles / Note":"4","Energy Limitation Class":"3","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"6 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / 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","insulation voltage / at AC / rated value":"440 V","operational current / at AC / rated value":"50 A","vibration resistance / acc. to IEC 60068-2-6":"50m/s² at 25 to 150Hz and 60m/s² at 10 to 150 Hz","with multi-phase operation / at AC / maximum":"440 V","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=363843&mlfb=5SJ6450-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6450-7/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SJ6450-7?","answer":"The 5SJ6450-7 is rated 6 kA breaking capacity under both EN 60898 and IEC 60947-2 at 400 V AC. This is the standard interrupting rating for most commercial and light-industrial distribution boards."},{"question":"What is the difference between the 5SJ6450-7 and the 5SJ6463-7?","answer":"The 5SJ6463-7 is the same 4-pole C-curve SENTRON 5SJ6 breaker but rated 63 A instead of 50 A. Both share the same 6 kA breaking capacity, 70 mm depth, 4 MW footprint, and environmental ratings. If your load draws 50 A or less, the 5SJ6450-7 is the correct fit; the 63 A version is used when the branch circuit requires a higher continuous rating."},{"question":"Where can I buy the 5SJ6450-7?","answer":"The 5SJ6450-7 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial response."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6450-7","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/5SJ6450-7 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}}