{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6540-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6540-6","canonicalUrl":"https://aoctrl.com/siemens/5SL6540-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6540-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6540-6 miniature circuit breaker, 1P+N, B characteristic, 40 A, 6 kA breaking capacity per EN 60898 and IEC 60947-2, 230 V AC, 2 MW.","salesMarkdown":"It derates to 37.57 A at 40 °C and 33.61 A at 55 °C — if your panel runs hot, factor that in. The B curve (3–5× In) is deliberate: it avoids nuisance trips on lighting and general-purpose loads but will not hold motor inrush; for motor circuits you want C or D curve. The neutral conductor is switched internally — no separate neutral bar needed downstream of this breaker. Mounting position is any orientation. Touch protection is built in. Sealable with a lead seal if the installation requires tamper evidence.","metaTitle":"Siemens 5SL6540-6 SENTRON MCB, 1P+N, B Curve, 40 A, 6 kA","metaDescription":"Siemens 5SL6540-6 SENTRON miniature circuit breaker, 1P+N, B characteristic, 40 A rated, 6 kA breaking capacity per EN 60898. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","Type Of Voltage":"AC","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","Number Of Poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 30 °C / rated value":"40 A","at 40 °C / rated value":"37.57 A","at 45 °C / rated value":"36.8 A","at 55 °C / rated value":"33.61 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"2","Tripping Characteristic Class":"B","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"6 kA","acc. to IEC 60947-2 / rated value":"6 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"230 V","Influence Of The Surrounding Temperature":"Periodically +55°C, max. 95% humidity","Product Function / Neutral Conductor Switching":"Yes","with single-phase operation / at AC / rated value":"250 V","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/202cc609e545d6d3658178577b1f8110.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=62005&mlfb=5SL6540-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6540-6/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 5SL6540-6?","answer":"The 5SL6550-7BB is a sibling in the same SENTRON 5SL6 series but with a C characteristic instead of B. If your load has moderate inrush (small motors, transformers), the C curve may be a better fit. Physically it shares the same 2 MW footprint and 6 kA breaking capacity, so it drops into the same panel without rewiring. The deciding factor is the trip curve: B for resistive/lighting, C for mixed loads."},{"question":"Where can I buy 5SL6540-6 and how is it quoted?","answer":"Sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock count or price is published here. Submit an RFQ for your quantity and target schedule."},{"question":"What compliance documentation is available for 5SL6540-6?","answer":"The breaker carries approvals per EN 60898 and IEC 60947-2, with a 6 kA breaking capacity under both standards. It is halogen-free and silicon-free. For specific declarations (RoHS, REACH, UL), request the manufacturer's compliance documents with your RFQ — these are typically provided at order confirmation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6540-6","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/5SL6540-6 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}}