{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4350-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4350-7","canonicalUrl":"https://aoctrl.com/siemens/5SL4350-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4350-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4350-7, 3-pole miniature circuit breaker, C-curve, 50 A, 10 kA breaking capacity at 400 V AC, 3 modular width units.","salesMarkdown":"## What it is and what it does The Siemens 5SL4350-7 is a SENTRON-series 3-pole miniature circuit breaker with a C tripping characteristic, rated 50 A at 400 V AC. It breaks fault currents up to 10 kA under both EN 60898 and IEC 60947-2 — that's the standard for residential and light commercial distribution boards where the prospective short-circuit current at the panel doesn't exceed 10 kA. The C-curve means it trips between 5× and 10× rated current, so it handles moderate inrush from motor starters or capacitor banks without nuisance tripping, while still clearing a hard fault fast enough to protect the downstream wiring. Three modular width units (54 mm wide) snap onto standard DIN rail — any mounting position works. The IP20 rating with connected conductors is typical for enclosed distribution boards; the sealable design lets a utility or facility manager lock the breaker state after commissioning. ## What the ratings mean for fit The 10 kA breaking capacity at 400 V AC is the key coordination figure. At 50 A, the per-pole power loss is 3.6 W in hot operating state. The 72 V DC maximum rating means it can switch DC loads up to that voltage, but the DC breaking capacity isn't separately stated — for DC circuits, derate or use a dedicated DC-rated breaker. Operating temperature range from -40 °C to 75 °C covers most indoor and sheltered outdoor installations.","metaTitle":"Siemens 5SL4350-7 SENTRON MCB, 3P C 50 A, 10 kA","metaDescription":"Siemens 5SL4350-7 SENTRON miniature circuit breaker, 3-pole, C-curve, 50 A, 10 kA breaking capacity per EN 60898/IEC 60947-2. Active production, available to order. Quoted on reque","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SL4350-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 3-pole, C, 50 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","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":"3","Tripping Characteristic Class":"C","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","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":"3.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8f5af18eec2c03ef90c12693feab69eb.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=68368&mlfb=5SL4350-7"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4350-7","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/5SL4350-7 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}}