{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6550-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6550-6","canonicalUrl":"https://aoctrl.com/siemens/5SL6550-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6550-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6 series, 5SL6550-6 miniature circuit breaker, 1P+N, 50 A, B characteristic, 6 kA, 230/250 V AC.","salesMarkdown":"The Siemens 5SL6550-6 is a 1P+N miniature circuit breaker from the SENTRON 5SL6 series, rated 50 A at 230 V AC with a B tripping characteristic. The B curve trips between 3 and 5 times rated current (150–250 A), making it the standard choice for resistive and general-purpose loads in residential and infrastructure installations — lighting circuits, socket outlets, and small distribution boards where inrush is moderate. Breaking capacity is 6 kA per both EN 60898 and IEC 60947-2, adequate for most domestic and light commercial service entrances where the prospective short-circuit current stays under that threshold. ## Panel fit and wiring constraints Two width units (36 mm) on the DIN rail, installation depth 70 mm, total depth 76 mm. Accepts solid or stranded copper from 0.75 mm² up to 25 mm².","metaTitle":"Siemens 5SL6550-6 SENTRON MCB, 50A 1P+N B-Curve 6kA","metaDescription":"Siemens 5SL6550-6 SENTRON miniature circuit breaker, 50 A rated, 1P+N, B tripping characteristic, 6 kA breaking capacity per EN 60898. Current lifecycle. Quoted 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","Solid":"0.75 ... 25 mm²","Width":"36 mm","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +45 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"5SL miniature circuit breakers","Energy limiting class":"3","Number of width units":"2","Number of poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SL6","Suitability for operation":"Residential buildings/infrastructure","Current / at AC / rated value":"50 A","Tripping characteristic class":"B","at DC / rated value / maximum":"60 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","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Product function / neutral conductor switching":"Yes","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bc1fa966fffe0222196ce1f430cc19ae.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=27653&mlfb=5SL6550-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6550-6/alternatives.json"},"ai":{"faq":[{"question":"What conductor sizes does 5SL6550-6 accept?","answer":"Solid or stranded copper from 0.75 mm² up to 25 mm², terminated at 2.5–3 N·m."},{"question":"Will 5SL6550-6 drop into a panel specified around 5SL6563-7BB without rewiring?","answer":"Both are 1P+N 5SL6-series breakers on the same 36 mm DIN-rail footprint, so the mechanical fit is identical. The difference is the rating: 5SL6550-6 is 50 A B-curve; 5SL6563-7BB is a different current/characteristic. Check your circuit's load and trip coordination before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6550-6","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/5SL6550-6 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}}