{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6320-7BB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6320-7BB","canonicalUrl":"https://aoctrl.com/siemens/5SL6320-7BB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6320-7BB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6320-7BB miniature circuit breaker, 3-pole C-curve 20 A, 6 kA breaking capacity, 400 V AC, 3 MW units, IP20.","salesMarkdown":"## What it is and what it does The Siemens 5SL6320-7BB is a SENTRON miniature circuit breaker (MCB) — 3-pole, C-curve, rated 20 A at 400 V AC, with a 6 kA breaking capacity per EN 60898 and IEC 60947-2. That C-curve means it trips between 5 and 10 times rated current, so it's the standard choice for general-purpose loads like lighting, socket circuits, and small motor feeders in residential and infrastructure panels. The 6 kA rating at 400 V tells you it can safely interrupt a fault current up to that level without welding contacts or cascading upstream — adequate for most domestic and light commercial distribution boards. ## Thermal derating and real-world current The 20 A rating holds at 30 °C ambient. At 40 °C it derates to 18.94 A, at 45 °C to 18.4 A, and at 55 °C to 17.24 A. If your panel runs hot — say a crowded enclosure near a boiler or in a sunny switchroom — you need to account for that drop. The breaker is rated for pollution degree 2 (normal, non-conductive dust) and overvoltage category III (fixed installation downstream of the main panel). ## Physical fit and panel integration Occupies 3 modular width units (54 mm wide) on a DIN rail. Depth is 76 mm, installation depth 70 mm. Snap-on mounting, any position. Touch protection is built in. Sealable — useful if you need to lock out settings after commissioning. Halogen-free and silicon-free, so it's safe for use in clean environments or where outgassing matters.","metaTitle":"Siemens 5SL6320-7BB SENTRON MCB, 3P C 20A 6kA","metaDescription":"Siemens 5SL6320-7BB SENTRON miniature circuit breaker, 3-pole, C-curve, 20 A, 6 kA breaking capacity per EN 60898/IEC 60947-2. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SL6320-7BB","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 6kA, 3-pole C, 20 A Version Italy","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","at AC / rated value":"20 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","according to EN 61346-2":"F","at 30 °C / rated value":"20 A","at 40 °C / rated value":"18.94 A","at 45 °C / rated value":"18.4 A","at 55 °C / rated value":"17.24 A","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"3","Tripping Characteristic Class":"C","at DC / rated value / maximum":"72 V","Product Feature / Touch Protection":"Yes","according to EN 60898 / rated value":"6 kA","supply voltage / at AC / rated value":"400 V","according to IEC 60947-2 / rated value":"6 kA","Type Of Voltage / Of The Operating Voltage":"AC","with multi-phase operation / at AC / maximum":"440 V","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/26f8e9a6c022fc7848ab38305bf8e4ea.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=473299&mlfb=5SL6320-7BB"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SL6320-7BB?","answer":"Submit an RFQ through this listing. We source the part through independent distribution and confirm availability and current pricing at quote time — no stock count or price is published here."},{"question":"Will 5SL6320-7BB drop into a panel specified around 5SL4363-7 without rewiring?","answer":"Both are 3-pole SENTRON MCBs on the same DIN-rail footprint, so the mechanical fit is identical. The 5SL6320-7BB is a C-curve 20 A / 6 kA; verify the 5SL4363-7's rating and curve against your circuit before swapping — if they match, no rewiring needed."},{"question":"What compliance documentation does this brand provide for 5SL6320-7BB?","answer":"The SENTRON series carries CE marking per the Low Voltage Directive and is designed to meet EN 60898 and IEC 60947-2. RoHS and REACH compliance is standard for Siemens industrial controls; specific declarations are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6320-7BB","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/5SL6320-7BB 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}}