{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4540-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4540-6","canonicalUrl":"https://aoctrl.com/siemens/5SL4540-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4540-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SL4540-6, 1P+N, B characteristic, 40 A rated current, 10 kA breaking capacity, 230 V AC.","salesMarkdown":"The Siemens SENTRON 5SL4540-6 is a 1P+N miniature circuit breaker with a B tripping characteristic, rated at 40 A and 230 V AC. It provides a 10 kA breaking capacity per both EN 60898 and IEC 60947-2, making it suitable for residential and light commercial distribution boards where short-circuit levels stay under that threshold. The 1P+N configuration switches the line and switches the neutral, with neutral conductor switching built in. At 30 °C the breaker carries the full 40 A. At 40 °C that drops to 37.89 A, at 45 °C to 36.8 A, and at 55 °C to 34.47 A. The 2-module-width body (36 mm wide, 90 mm tall, 76 mm deep) snaps onto standard DIN rail. Mounting position is unrestricted.","metaTitle":"Siemens SENTRON 5SL4540-6 MCB, 2-pole 1P+N, B-curve 40A, 10k","metaDescription":"Siemens SENTRON 5SL4540-6 miniature circuit breaker, 230V AC, 10kA breaking capacity, 1P+N, B characteristic, 40A rated current. Active production, sourced to order.","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":"37.89 A","at 45 °C / rated value":"36.8 A","at 55 °C / rated value":"34.47 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":"10 kA","acc. to IEC 60947-2 / rated value":"10 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"230 V","Influence Of The Surrounding Temperature":"+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/04a3c0fc2da4fa3c9cc6f0f67b9ed442.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=503289&mlfb=5SL4540-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4540-6/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SL4540-6 and how do I get a price?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is 5SL4540-6's listed depth (76 mm) on this component line?","answer":"The depth is 76 mm."},{"question":"What is 5SL4540-6's listed width (36 mm) on this component line?","answer":"The width is 36 mm, which corresponds to 2 modular width units on a DIN rail."},{"question":"Will 5SL4540-6 drop into a panel that was specified around 5SL6550-7BB without rewiring?","answer":"The 5SL4540-6 is a 1P+N unit, while the 5SL6550-7BB is a different configuration. Physical dimensions may differ; check the pole count and terminal layout before assuming a drop-in fit."},{"question":"What compliance documentation does this brand provide for 5SL4540-6 (RoHS, REACH, UL, IEC)?","answer":"The breaker is rated per EN 60898 and IEC 60947-2, and the brand (Siemens SENTRON) typically provides RoHS and REACH declarations. Specific documentation should be requested at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4540-6","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/5SL4540-6 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}}