{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6120-6CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6120-6CC","canonicalUrl":"https://aoctrl.com/siemens/5SY6120-6CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6120-6CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6120-6CC, 1-pole miniature circuit breaker, B tripping characteristic, 20 A rated current (at 35 °C), 6 kA breaking capacity per EN 60898, 1 MW width.","salesMarkdown":"The Siemens SENTRON 5SY6120-6CC is a 1-pole miniature circuit breaker (MCB) with a B tripping characteristic, rated 20 A at 35 °C and breaking 6 kA per EN 60898. Rated for 440 V AC single- or multi-phase, and 72 V DC maximum — the DC rating is low, so this is an AC-only choice for DC circuits above that. ## Temperature derating — the real ampacity The 20 A rating holds at 35 °C ambient. Above that, the 5SY6120-6CC derates linearly: 18.38 A at 40 °C, 17.5 A at 45 °C, 16.58 A at 50 °C, and 15.62 A at 55 °C. The surrounding temperature influence spec also caps humidity: 95 % up to 55 °C, dropping to 55 % at 70 °C and 35 % at 75 °C. Snap-on quick assembly system, mountable in any position. Sealable, halogen-free, silicon-free — relevant for food, pharma, or clean-room builds where outgassing or tamper evidence matters.","metaTitle":"Siemens 5SY6120-6CC SENTRON MCB, B-Curve 20A 6kA, 1-Pole","metaDescription":"Siemens SENTRON 5SY6120-6CC miniature circuit breaker, B-curve, 20 A rated at 35 °C, 6 kA breaking capacity per EN 60898. 1-pole, 1 MW wide. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SY6120-6CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230/400 V 6kA, 1-pole, B, 20A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"20 A","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","at 35 °C rated value":"20 A","at 40 °C rated value":"18.38 A","at 45 °C rated value":"17.5 A","at 50 °C rated value":"16.58 A","at 55 °C rated value":"15.62 A","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"B","according to EN 60898 rated value":"6 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/93b46eaac6e7574dc514e1ced5fea2f6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=97642&mlfb=5SY6120-6CC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY6120-6CC?","answer":"6 kA per EN 60898 at 440 V AC, single- or multi-phase operation."},{"question":"What is the width and depth of 5SY6120-6CC?","answer":"18 mm width (1 modular unit) and 76 mm depth, 90 mm height."},{"question":"Can 5SY6120-6CC be used in DC circuits?","answer":"Yes, but only up to 72 V DC maximum — above that it is not rated."},{"question":"How do I get current pricing and availability for 5SY6120-6CC?","answer":"Submit an RFQ — the part is sourced and quoted to order through independent distribution, with pricing and stock confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6120-6CC","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/5SY6120-6CC 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}}