{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7340-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7340-6","canonicalUrl":"https://aoctrl.com/siemens/5SY7340-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7340-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7340-6, 3-pole miniature circuit breaker, 40 A rated, B-curve, 15 kA breaking capacity (EN 60898), 20 kA (IEC 60947-2), IP20, 54 mm wide.","salesMarkdown":"## Integrator note — 5SY7340-6 ## Thermal derating and ambient range The 40 A rating holds at 35 °C. At 40 °C it derates to 38.4 A, at 50 °C to 36.76 A, and at 60 °C to 35.04 A. ## Physical fit and installation The quick-assembly fastening system clips onto DIN rail without tools. Sealable and touch-protected, with halogen-free and silicon-free construction — suited for clean-room or food-bev panels where outgassing matters.","metaTitle":"Siemens 5SY7340-6 SENTRON MCB, 3-Pole, 40 A, B-Curve, 15 kA","metaDescription":"Siemens 5SY7340-6 SENTRON miniature circuit breaker, 3-pole, 40 A rated, B-curve, 15 kA per EN 60898. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"3","Type Of Voltage":"AC","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"40 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"3P","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 35 °C / rated value":"40 A","at 40 °C / rated value":"38.4 A","at 45 °C / rated value":"37.6 A","at 50 °C / rated value":"36.76 A","at 55 °C / rated value":"35.92 A","at 60 °C / rated value":"35.04 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"3","Tripping Characteristic Class":"B","acc. to EN 60898 / rated value":"15 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"20 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"15 kA","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Function / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ec16218c0e87f55b492fdfc9b02fe972.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=516739&mlfb=5SY7340-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7340-6/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of 5SY7340-6?","answer":"3-pole, 40 A rated, B-curve, breaking capacity 15 kA per EN 60898 and 20 kA per IEC 60947-2. Operating ambient -40 °C to 75 °C. Width 54 mm (3 modular units), depth 76 mm."},{"question":"Where can I buy 5SY7340-6?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer."},{"question":"Will 5SY7340-6 drop into a panel specified around 5SY4140-7?","answer":"Both are 3-pole SENTRON MCBs with the same 54 mm width and DIN-rail mounting, so mechanical fit is identical. However, 5SY7340-6 is a 40 A B-curve, while 5SY4140-7 is a 40 A C-curve — the tripping characteristic differs, so check selectivity and load type before substituting."},{"question":"What compliance documentation is available for 5SY7340-6?","answer":"The part carries IEC 60947-2 and EN 60898 ratings, overvoltage category III, pollution degree 3. It is halogen-free and silicon-free. Standard Siemens SENTRON documentation includes CE declaration and RoHS/REACH compliance statements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7340-6","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/5SY7340-6 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}}