{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL7320-8RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL7320-8RC","canonicalUrl":"https://aoctrl.com/siemens/5SL7320-8RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL7320-8RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens Betagard miniature circuit breaker, 3-pole, D tripping characteristic, 20 A rated, 15 kA breaking capacity, 415 V AC, 5SL7320-8RC.","salesMarkdown":"## What this MCB is and what the ratings mean for your panel The Siemens Betagard 5SL7320-8RC is a 3-pole miniature circuit breaker with a D tripping characteristic, rated 20 A at 415 V AC and a 15 kA breaking capacity per both EN 60898 and IEC 60947-2. The D-curve means it tolerates the high inrush currents typical of motor loads, transformers, and welding equipment — the magnetic trip threshold is 10–20× rated current, so nuisance tripping on startup is unlikely. The 15 kA SCCR at 415 V tells you this breaker can safely interrupt a fault up to that level without upstream damage; it's sized for industrial distribution panels where fault currents are substantial. The 3-pole design (3 modular width units, 18 mm per pole) handles three-phase circuits; there is no integrated neutral pole switching. ## Derating and ambient temperature — the real current you can carry The 20 A rating holds at 30 °C ambient. At 40 °C it derates to 19 A, at 45 °C to 18.6 A, at 50 °C to 18 A, at 55 °C to 17.6 A, and at 60 °C to 17.2 A. If your panel runs warm — common in a crowded enclosure — size the upstream protection for the derated value, not the nameplate. The operating temperature range is -40 °C to 75 °C, which covers outdoor cabinets in cold climates and hot machine compartments. ## Mounting and integration into the panel Snaps onto standard DIN rail; mounting position is unrestricted. Overall dimensions are 18 mm wide, 90 mm high, 76 mm deep, with an installation depth of 70 mm behind the panel face. The IP20 rating applies with connected conductors — standard for enclosed distribution boards. Pollution degree 2 and overvoltage category III are typical for fixed-installation industrial and commercial power circuits. Touch protection is built in. The breaker is sealable, halogen-free, and silicon-free, which matters for environments sensitive to outgassing (clean rooms, food processing, medical device manufacturing).","metaTitle":"Siemens Betagard 5SL7320-8RC MCB, 3P D 20A 15kA","metaDescription":"Siemens Betagard 5SL7320-8RC miniature circuit breaker, 3-pole, D-curve, 20 A rated, 15 kA breaking capacity per EN 60898/IEC 60947-2. Active production, sourced 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":"18 mm","title":"5SL7320-8RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 415 V 3-pole 15 kA D 20","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":"Betagard","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","at 30 °C / rated value":"20 A","at 40 °C / rated value":"19 A","at 45 °C / rated value":"18.6 A","at 50 °C / rated value":"18 A","at 55 °C / rated value":"17.6 A","at 60 °C / rated value":"17.2 A","Suitability For Operation":"Industry","Number Of Modular Width Units":"3","Tripping Characteristic Class":"D","acc. to EN 60898 / rated value":"15 kA","acc. to IEC 60947-2 / rated value":"15 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"415 V","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","with single-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/3a3fc79371b9ced22bc73ba3333ed324.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=646382&mlfb=5SL7320-8RC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL7320-8RC?","answer":"15 kA per both EN 60898 and IEC 60947-2 at 415 V AC. That is the same rating under both standards, so it qualifies for industrial panels where the prospective fault current is known to be at that level."},{"question":"What does the D tripping characteristic mean for this breaker?","answer":"The D-curve has a magnetic trip threshold of 10–20 times the rated current, so it handles the high inrush of motor loads, transformers, and welding equipment without nuisance tripping. It is the correct choice for circuits with inductive starting surges."},{"question":"Where can I buy 5SL7320-8RC and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL7320-8RC","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/5SL7320-8RC 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}}