{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4320-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4320-7","canonicalUrl":"https://aoctrl.com/siemens/5SL4320-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4320-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4320-7, 3-pole miniature circuit breaker, C-curve, 20 A, 400 V AC, 10 kA breaking capacity.","salesMarkdown":"The Siemens 5SL4320-7 is a SENTRON miniature circuit breaker, 3-pole, with C-curve tripping, rated 20 A at 400 V AC and a 10 kA breaking capacity per both EN 60898 and IEC 60947-2. It occupies 3 modular width units (54 mm) on the DIN rail, depth 76 mm, and is rated for residential and infrastructure panels. ## What the ratings mean for fit The C-curve (tripping characteristic class C) means magnetic trip between 5 and 10 times rated current — standard for general-purpose lighting and small motor loads where inrush isn't extreme. The 10 kA breaking capacity at 400 V AC matches the typical domestic and light commercial fault level; if your panel's prospective short-circuit current exceeds that, step up to a higher-rated breaker. Rated for overvoltage category III and pollution degree 2, so it's suited for fixed installations inside a distribution board. Power loss per pole is 2 W in hot operating state at rated current. Mechanical service life is 10 000 operating cycles typical — fine for most panel applications where the breaker sees infrequent manual switching. ## Mounting and integration Mounts in any position on a 35 mm DIN rail. Installation depth is 70 mm, overall depth 76 mm. The 54 mm width (3 modular units) is standard for a 3-pole MCB. Sealable, halogen-free, silicon-free — relevant for clean-room or harsh-environment specs. IP20 with connected conductors, so it's not for wet locations without an outer enclosure. Supplementary devices (auxiliary switches, shunt trips, alarm contacts) can be added via the product extension feature — check compatibility with the 5SL range.","metaTitle":"Siemens 5SL4320-7 SENTRON MCB, 3P C 20A 400V 10kA","metaDescription":"Siemens 5SL4320-7 SENTRON miniature circuit breaker, 3-pole, C-curve, 20 A, 400 V AC, 10 kA breaking capacity per IEC/EN. Active production, sourced to order.","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":"5SL4320-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 3-pole, C, 20 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":"2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$146.08 – $150.59","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b97409499536e89ee77516dc7ad97276.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=347785&mlfb=5SL4320-7"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4320-7","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/5SL4320-7 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}}