{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5120-6CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5120-6CC","canonicalUrl":"https://aoctrl.com/siemens/5SY5120-6CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5120-6CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5120-6CC, 1-pole DC miniature circuit breaker, B tripping characteristic, 10 kA breaking capacity at 220 V DC per IEC 60947-2, 18 mm width, 76 mm depth.","salesMarkdown":"## DC-rated MCB for control-circuit and auxiliary protection ## Current derating and thermal environment Rated current is not a single number; it depends on ambient temperature inside the enclosure. At 40 °C the breaker carries 18.64 A, dropping to 17.92 A at 45 °C, 17.16 A at 50 °C, and 16.38 A at 55 °C. The surrounding humidity limits are also temperature-dependent: max 95% RH up to 55 °C, 55% RH up to 70 °C, and 35% RH up to 75 °C. Mounting position is unrestricted — vertical, horizontal, inverted — so it fits tight gland plates or swing frames. The quick-assembly fastening system snaps onto the rail without tools. ## Environmental and compliance profile Halogen-free and silicon-free construction makes it suitable for clean-room, food-and-bev, or semiconductor-adjacent installations where outgassing must be minimised. IP20 with connected conductors — protected against fingers but not water ingress; install inside a sealed enclosure for wet environments. Vibration resistance per IEC 60068-2-6: ±1 mm at 5 to 25 Hz, 50 m/s² at 25 to 150 Hz, so it holds up on machinery with moderate vibration.","metaTitle":"Siemens 5SY5120-6CC SENTRON MCB, 1P DC, B Curve, 10 kA","metaDescription":"Siemens 5SY5120-6CC SENTRON 1-pole DC miniature circuit breaker, B characteristic, 10 kA breaking capacity per IEC 60947-2. Active production, sourced to order. 18 mm width, 76 mm","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":"5SY5120-6CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit-breaker 220 V DC 10kA, 1-pole, B, 20A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"1","Type Of Voltage":"DC","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at DC / rated value":"220 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Design Of The Product":"Machine manufacture / industry","Number Of Poles / Note":"1P","acc. to DIN EN 61346-2":"F","at 40 °C / rated value":"18.64 A","at 45 °C / rated value":"17.92 A","at 50 °C / rated value":"17.16 A","at 55 °C / rated value":"16.38 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"1","Tripping Characteristic Class":"B","Position / Of Power Supply Cord":"Consider polarity","Product Feature / Touch Protection":"Yes","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"10 kA","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Function / Neutral Conductor Switching":"No","operating voltage / at DC / rated value / maximum":"250 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6d787a638dc63118f3562a54a810f0a4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=50773&mlfb=5SY5120-6CC"},"ai":{"faq":[{"question":"What is 5SY5120-6CC's listed depth?","answer":"The overall depth is 76 mm, with an installation depth of 70 mm behind the panel face."},{"question":"What is 5SY5120-6CC's listed width?","answer":"Width is 18 mm, occupying 1 modular width unit on a DIN rail."},{"question":"Where can I buy 5SY5120-6CC and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5120-6CC","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/5SY5120-6CC 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}}