{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ3140-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ3140-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SJ3140-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ3140-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ3140-7RC, 1-pole miniature circuit breaker, 40 A rated current, C tripping characteristic, 6 kA breaking capacity per EN 60898, 240 V AC single-phase, 18 mm width.","salesMarkdown":"The single-pole design switches the line only; neutral is not switched or monitored. The 40 A rating at 30 °C is the thermal baseline. In a 40 °C panel ambient — common in enclosed distribution boards — the continuous current must be derated per IEC 60898 derating curves; the evidence does not provide a specific 40 °C value for this variant, so the installed load should be sized conservatively below 40 A when ambient exceeds 30 °C. Maximum operating voltage is 240 V AC single-phase or 440 V AC multi-phase. For DC circuits, the maximum rated voltage is 72 V — this is not a general-purpose DC breaker for higher-voltage battery banks or PV strings. That is the mechanical endurance of the mechanism, not the electrical endurance at full rated current — expect fewer cycles under load, especially near the 40 A limit.","metaTitle":"Siemens 5SJ3140-7RC SENTRON MCB, 1P 40A C-Curve, 6kA","metaDescription":"Siemens SENTRON 5SJ3140-7RC miniature circuit breaker, 1-pole 40A C-characteristic, 6kA breaking capacity per EN 60898. Active production, sourced to order. Request quote for prici","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SJ3140-7RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"MCB Retail line 1p 4.5kA 40A C Characteristic","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","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","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"No","at 30 °C / rated value":"40 A","Suitability For Operation":"retail line","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"6 kA","Product Feature / Touch Protection":"No","supply voltage / at AC / rated value":"240 V","Type Of Voltage / Of The Operating Voltage":"AC","with multi-phase operation / at AC / maximum":"440 V","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"250 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/869a55d21efbc897db3d4e99b182afe4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1477857&mlfb=5SJ3140-7RC"},"ai":{"faq":[{"question":"Where can I buy the 5SJ3140-7RC and get current pricing?","answer":"The 5SJ3140-7RC is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — both are confirmed at quote time."},{"question":"Will the 5SJ3140-7RC fit a panel designed for the 5SL4120-7CC?","answer":"Yes — both occupy the same 18 mm width, 76 mm depth, and 70 mm installation depth on a DIN rail. The 5SJ3140-7RC lacks the touch-protection shroud of the 5SL4120-7CC, so live busbar stabs are exposed when the breaker is removed. Panel layout and busbar spacing are identical."},{"question":"What compliance documentation is available for the 5SJ3140-7RC?","answer":"The breaker is designed to EN 60898 for breaking capacity and carries the SENTRON brand under Siemens quality management. The housing is halogen-free and silicon-free. Specific RoHS/REACH declarations and the CE declaration of conformity are available from Siemens Industry Online Support."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ3140-7RC","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/5SJ3140-7RC 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}}