{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4150-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4150-6","canonicalUrl":"https://aoctrl.com/siemens/5SL4150-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4150-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4150-6, miniature circuit breaker, 1-pole, B-curve, 50 A rated current, 10 kA breaking capacity per EN 60898 and IEC 60947-2, 1 MW width, IP20 with connected conductors.","salesMarkdown":"The Siemens SENTRON 5SL4150-6 is a 1-pole miniature circuit breaker rated 50 A with B-curve tripping characteristic, designed for 230/400 V AC systems. ## B-curve and breaking capacity — what they mean for the panel The B-curve (tripping characteristic class B) means the magnetic trip fires at 3 to 5 times rated current — so for a 50 A breaker, instantaneous trip occurs between 150 A and 250 A. That makes it a good fit for resistive or general-purpose loads with modest inrush, like lighting circuits or small distribution subfeeds. It is not the right choice for motor circuits or transformer primaries that draw higher inrush; those want C or D curves. That simplifies BOM coordination if the panel crosses both applications. Single-module width (18 mm) on a standard DIN rail, any mounting position accepted. Sealable design allows padlocking in the OFF position for LOTO compliance. ## Environmental range and approvals","metaTitle":"Siemens 5SL4150-6 SENTRON MCB, 1P B-Curve 50A 10kA","metaDescription":"Siemens SENTRON 5SL4150-6 miniature circuit breaker, 1-pole, B-curve, 50A, 10kA breaking capacity per EN 60898/IEC 60947-2. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"1","Tripping Characteristic Class":"B","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"10 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"250 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"4 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a81e4d520b29c5bcd080a783b07055a1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=134121&mlfb=5SL4150-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4150-6/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SL4150-6 and what is the lead time?","answer":"The 5SL4150-6 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the difference between the 5SL4150-6 and the 5SL4363-7?","answer":"The 5SL4363-7 is a 3-pole C-curve 63 A breaker in a 3-module width (54 mm). The 5SL4150-6 is a 1-pole B-curve 50 A in a single module. They share the same depth (76 mm), height (90 mm), and breaking capacity (10 kA), but the pole count, trip curve, and current rating differ. The 5SL4363-7 will not drop into a panel wired for the 5SL4150-6 without rewiring the busbar and neutral arrangement."},{"question":"What compliance documentation does Siemens provide for the 5SL4150-6?","answer":"The 5SL4150-6 carries CE marking and is designed to meet EN 60898 and IEC 60947-2. It is halogen-free and silicon-free. RoHS and REACH declarations are available from Siemens documentation for the SENTRON series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4150-6","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/5SL4150-6 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}}