{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3203-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3203-7","canonicalUrl":"https://aoctrl.com/siemens/5SL3203-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3203-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3203-7 miniature circuit breaker, 2-pole, C characteristic, 3 A rated, 400 V AC, 4.5 kA breaking capacity per EN 60898, 2 modular width units (36 mm).","salesMarkdown":"## What this MCB does in the panel It protects branch circuits in residential and infrastructure panels against overload and short-circuit faults. Breaking capacity is 4.5 kA per EN 60898 and 5 kA per IEC 60947-2 at 400 V AC — adequate for most domestic and light commercial distribution boards where the prospective short-circuit current stays under that threshold. The 2-pole form switches both line and neutral in a single-width module, saving rail space over a 1P+N arrangement. IP20 with conductors connected — standard for enclosed distribution boards. Sealable terminals and halogen-free / silicon-free construction meet the material restrictions common in healthcare and public-building specs. ## Coordination and compliance notes Mechanical service life of 10 000 operating cycles typical.","metaTitle":"Siemens 5SL3203-7 SENTRON MCB, 2-pole C-curve 3A 4.5kA","metaDescription":"Siemens 5SL3203-7 SENTRON miniature circuit breaker, 2-pole, C characteristic, 3 A, 400 V AC, 4.5 kA per EN 60898. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SL3203-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 4.5 kA, 2-pole, C, 3A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","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","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":"2","Tripping Characteristic Class":"C","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"4.5 kA","according to IEC 60947-2 rated value":"5 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","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":"1.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8870833b59360a128cc8713f92d5c078.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=313193&mlfb=5SL3203-7"},"ai":{"faq":[{"question":"Where can I buy 5SL3203-7 and get a price?","answer":"The 5SL3203-7 is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the difference between 5SL3203-7 and 5SL4363-7?","answer":"The 5SL4363-7 is a 3-pole version rated 10 kA breaking capacity (vs 4.5 kA) and 54 mm wide (3 modular units) compared to the 2-pole 36 mm width of the 5SL3203-7. The 5SL4363-7 also dissipates 5 W per pole versus 1.2 W. They share the same C-curve, 400 V AC rating, and SENTRON family design, but the 5SL4363-7 is a higher-capacity breaker for three-phase branch circuits."},{"question":"What compliance documentation does Siemens provide for 5SL3203-7?","answer":"The 5SL3203-7 carries ratings per EN 60898 (4.5 kA) and IEC 60947-2 (5 kA). It is halogen-free and silicon-free. Standard Siemens SENTRON documentation includes CE declaration of conformity and manufacturer declarations for RoHS and REACH compliance available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3203-7","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/5SL3203-7 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}}