{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4503-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4503-6","canonicalUrl":"https://aoctrl.com/siemens/5SL4503-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4503-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4503-6, miniature circuit breaker, 1P+N, B characteristic, 3 A rated, 230 V AC, 10 kA breaking capacity, 2 MW.","salesMarkdown":"The Siemens 5SL4503-6 is a SENTRON miniature circuit breaker — 1P+N, B-curve trip at 3 A, 230 V AC, 50/60 Hz. It breaks 10 kA per EN 60898 and IEC 60947-2, so it clears faults up to that level without upstream cascading in a residential or light-commercial panel. The B curve trips between 3 and 5 times rated current (9–15 A magnetic release), which suits resistive and general-purpose loads — lighting, socket circuits, small appliances — where inrush stays moderate. The 3 A rating at 30 °C derates to 2.84 A at 40 °C and 2.59 A at 55 °C; if the panel runs hot, size up one step. Two modular width units (36 mm wide, 76 mm deep, 70 mm installation depth) snap onto DIN rail in any mounting position. IP20 with conductors connected — enclosed in a distribution board, not exposed to washdown. Rated for overvoltage category III (fixed installation) and pollution degree 2.","metaTitle":"Siemens 5SL4503-6 SENTRON MCB, 1P+N, B Curve, 3A, 10kA","metaDescription":"Siemens 5SL4503-6 SENTRON miniature circuit breaker, 1P+N, 230V AC, B characteristic, 3A rated, 10kA breaking capacity per EN 60898. Active production. 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","Width":"36 mm","title":"5SL4503-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V 10kA, 1+N-pole, B, 3A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"3 A","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","at 30 °C rated value":"3 A","at 40 °C rated value":"2.84 A","at 45 °C rated value":"2.76 A","at 55 °C rated value":"2.59 A","Energy Limitation Class":"3","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"2","Tripping Characteristic Class":"B","supply voltage at AC rated value":"230 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","Value Range Of The Supply Voltage Frequency":"50/60 Hz","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":"1.9 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3ce392804f2af16e298b4cc6cab875e3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=376032&mlfb=5SL4503-6"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL4503-6?","answer":"10 kA per both EN 60898 and IEC 60947-2 at 230 V AC."},{"question":"What is the width and depth of 5SL4503-6?","answer":"Width is 36 mm (2 modular units), depth is 76 mm, installation depth is 70 mm."},{"question":"Where can I buy 5SL4503-6 and get current pricing?","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/5SL4503-6","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/5SL4503-6 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}}