{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ3640-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ3640-7","canonicalUrl":"https://aoctrl.com/siemens/5SJ3640-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ3640-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ3 miniature circuit breaker, 40 A, C tripping characteristic, 4.5 kA breaking capacity, 400 V AC, 3P+N, 4 modular width units.","salesMarkdown":"The Siemens 5SJ3640-7 is a 4-pole (3P+N) SENTRON miniature circuit breaker from the 5SJ3 design family, rated 40 A with a C tripping characteristic. Breaking capacity is 4.5 kA per both EN 60898 and IEC 60947-2 at 400 V AC. Mounting position is any. Installation depth is 70 mm. ## Terminal and environment Solid and stranded conductor range is 0.75 to 25 mm². Sealable terminals support lockout/tagout procedures. Rated for ambient temperatures of -20 to +45 °C, with periodic excursions to +55 °C and 95% humidity. Storage range is -40 to +75 °C. Halogen-free and silicon-free construction — important for environments sensitive to corrosive off-gassing (data centers, clean rooms, marine panels).","metaTitle":"Siemens 5SJ3640-7 SENTRON MCB, 40A C-Curve 4.5kA 3P+N","metaDescription":"Siemens 5SJ3640-7 SENTRON miniature circuit breaker, 40 A, C characteristic, 4.5 kA breaking capacity per EN 60898/IEC 60947-2, 400 V AC, 3P+N, 4 MW. Current lifecycle stage. Quote","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Solid":"0.75 ... 25 mm²","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"4","Type of voltage":"AC/DC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-20 ... +45 °C","Product designation":"Miniature circuit breakers","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"Miniature circuit breaker 5SJ3","Energy limiting class":"3","Number of width units":"4","Number of poles / Note":"3P+N","circuit-breaker / Design":"5SJ3","Current / at AC / rated value":"40 A","Tripping characteristic class":"C","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"4.5 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"4.5 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","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=79649&mlfb=5SJ3640-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ3640-7/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ3640-7","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/5SJ3640-7 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}}