{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6218-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6218-7","canonicalUrl":"https://aoctrl.com/siemens/5SY6218-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6218-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6218-7, 2-pole miniature circuit breaker, C-curve, 15 A rated, 6 kA per EN 60898 / 15 kA per IEC 60947-2, 2 MW units.","salesMarkdown":"Rated breaking capacity is 6 kA per EN 60898 and 15 kA per IEC 60947-2, with the same 15 kA figure for DC applications per IEC 60947-2. The 15 kA rating gives headroom for industrial panels where fault currents run higher than residential levels — useful for selectivity studies downstream of a larger feeder breaker. ## Thermal derating — the real-world current At 35 °C the breaker carries its full 15 A. At 40 °C it derates to 14.28 A, at 45 °C to 13.9 A, at 50 °C to 13.53 A, and at 55 °C to 13.12 A. The surrounding temperature influence table also caps humidity: 95 % up to 55 °C, 55 % up to 70 °C, 35 % up to 75 °C. The quick-assembly fastening system and any mounting position simplify panel layout. ## Environmental and material compliance Energy limitation class 3. The wide temperature range (-40 to 75 °C) covers cold storage or unheated enclosures. Suitability is marked for mechanical engineering and industry.","metaTitle":"Siemens 5SY6218-7 SENTRON MCB, 2P C 15A, 6kA/15kA","metaDescription":"Siemens 5SY6218-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 15 A rated, 6 kA (EN 60898) / 15 kA (IEC 60947-2) breaking capacity. Current lifecycle stage, sourced to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-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","Design Of Pole":"2P","Number Of Poles":"2","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":"15 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 35 °C / rated value":"15 A","at 40 °C / rated value":"14.28 A","at 45 °C / rated value":"13.9 A","at 50 °C / rated value":"13.53 A","at 55 °C / rated value":"13.12 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"6 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"15 kA","Product Feature / Touch Protection":"Yes","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","Type Of Voltage / Of The Operating Voltage":"AC","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 Component / 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 (Switching Cycles) / Typical":"10 000"}},"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=103577&mlfb=5SY6218-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6218-7/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY6218-7?","answer":"6 kA per EN 60898 and 15 kA per IEC 60947-2 for AC; 15 kA per IEC 60947-2 for DC."},{"question":"Where can I buy 5SY6218-7?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source to 5SY6218-7?","answer":"The 5SY7210-7CC is a peer in the same SENTRON family, but it carries a different current rating and curve — verify your load before substituting. No direct drop-in without checking the BOM."},{"question":"What compliance documentation does Siemens provide for 5SY6218-7?","answer":"The part is halogen-free and silicon-free. Standard Siemens declarations for RoHS, REACH, and CE are available on request; the product is designed to EN 60898 and IEC 60947-2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6218-7","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/5SY6218-7 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}}