{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6520-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6520-7","canonicalUrl":"https://aoctrl.com/siemens/5SL6520-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6520-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6520-7, miniature circuit breaker, 1P+N, C-curve, 20 A rated, 6 kA breaking capacity at 230 V AC, 2 MW, IP20.","salesMarkdown":"It's the sort of part you grab off the van when a residential or light-commercial panel needs a new branch breaker and you're not looking to re-engineer the whole enclosure. The C-curve means it holds through motor inrush up to about 5-10x rated current — good for pumps, compressors, and small conveyor drives where you'd get nuisance trips on a B-curve. Two modular-width units (36 mm wide) snap onto standard DIN rail. Mounting position is unrestricted, so you can lay it sideways or upside-down in a tight enclosure if the conductors allow. IP20 with connected conductors, which is the norm for enclosed distribution boards. Degree of pollution 2, overvoltage category III — it's rated for the fixed-installation side of the meter, not for outdoor exposure without a weatherhead. ## Thermal derating — the number that matters in a crowded panel Rated 20 A at 30 °C ambient, but that drops to 18.79 A at 40 °C and 16.8 A at 55 °C. If you're packing six of these side-by-side in a 40 °C enclosure, you're effectively limited to 18.6 A per pole — plan your load schedule accordingly. Power loss per pole is 2.2 W at rated current, which adds up fast in a multi-way board. ## Supplementary devices and compliance The design accepts installable supplementary devices — shunt trip, auxiliary contacts, alarm switch — so you can add remote trip signalling or status feedback without replacing the breaker. Halogen-free and silicon-free construction, sealable for tamper-proof installations in metered or rental applications.","metaTitle":"Siemens 5SL6520-7 SENTRON MCB, 1P+N, C-curve, 20 A, 6 kA","metaDescription":"Siemens 5SL6520-7 SENTRON miniature circuit breaker, 1P+N, 20 A, C-curve, 6 kA breaking capacity per EN 60898. Active production. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SL6520-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V 6kA, 1+N-pole, C, 20 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"20 A","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","at 30 °C rated value":"20 A","at 40 °C rated value":"18.79 A","at 45 °C rated value":"18.6 A","at 55 °C rated value":"16.8 A","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":"230 V","according to EN 60898 rated value":"6 kA","according to IEC 60947-2 rated value":"6 kA","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with single-phase operation at AC rated value":"250 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":"2.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.19","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3c319773de6d8390bd9847e8ee6926f5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=150882&mlfb=5SL6520-7"},"ai":{"faq":[{"question":"Where can I buy 5SL6520-7?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here."},{"question":"What is the closest functional second-source for 5SL6520-7?","answer":"The 5SL6550-7BB is a functional peer in the same SENTRON family — same 1P+N, C-curve, 6 kA breaking capacity, but at 50 A rated current rather than 20 A. It occupies the same 2 MW footprint and shares the same DIN-rail mounting and supplementary-device compatibility, so it drops into a panel specified around the 5SL6520-7 without rewiring — only the branch rating changes."},{"question":"What compliance documentation does Siemens provide for 5SL6520-7?","answer":"The breaker carries ratings per EN 60898 and IEC 60947-2, and is built halogen-free and silicon-free. Full RoHS, REACH, and CE documentation is available from Siemens — request it with your RFQ for formal compliance records."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6520-7","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/5SL6520-7 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}}