{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3550-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3550-7","canonicalUrl":"https://aoctrl.com/siemens/5SL3550-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3550-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3550-7 miniature circuit breaker, 1P+N, C-curve, 50 A, 230 V AC, 4.5 kA (EN 60898) / 5 kA (IEC 60947-2), 2 MW, IP20, halogen-free.","salesMarkdown":"## Siemens 5SL3550-7 SENTRON MCB – 50 A, C-Curve, 1P+N The 4.5 kA breaking capacity per EN 60898 covers most domestic fault levels; the 5 kA per IEC 60947-2 gives a second reference for industrial coordination studies. ## Temperature derating — the number that decides the real ampacity At 40 °C the breaker is good for 46.97 A; at 45 °C it drops to 45 A; at 55 °C it is 42.01 A. Size the upstream conductor and load accordingly. Mounting position is any, and with connected conductors the IP20 protection applies. The neutral pole is switched internally, so no separate neutral bar connection is needed for the load side — just the incoming neutral lands on the breaker's neutral terminal.","metaTitle":"Siemens 5SL3550-7 SENTRON MCB, 50 A, C-Curve, 1P+N, 36 mm","metaDescription":"Siemens 5SL3550-7 SENTRON miniature circuit breaker, 50 A rated, C tripping characteristic, 1P+N, 4.5 kA (EN 60898) / 5 kA (IEC 60947-2). Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SL3550-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V 4.5 kA, 1+N-pole, C, 50 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","at AC / rated value":"50 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","according to EN 61346-2":"F","at 30 °C / rated value":"50 A","at 40 °C / rated value":"46.97 A","at 45 °C / rated value":"45 A","at 55 °C / rated value":"42.01 A","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","at DC / rated value / maximum":"72 V","according to EN 60898 / rated value":"4.5 kA","supply voltage / at AC / rated value":"230 V","according to IEC 60947-2 / rated value":"5 kA","Type Of Voltage / Of The Operating Voltage":"AC","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/384c15abc0e5c62e136ec29fc0a37c0e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=175679&mlfb=5SL3550-7"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SL3550-7?","answer":"4.5 kA per EN 60898 and 5 kA per IEC 60947-2. The EN figure is the one typically used for domestic final circuits; the IEC figure is for industrial coordination studies."},{"question":"What is the 5SL3550-7 used for?","answer":"It is a miniature circuit breaker for single-phase 230 V AC final subcircuits in residential buildings and infrastructure. The C-curve handles moderate inrush from lighting banks, small motors, and transformers."},{"question":"Where can I buy the 5SL3550-7?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3550-7","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/5SL3550-7 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}}