{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5406-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5406-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY5406-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5406-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5406-7CC, 4-pole miniature circuit breaker, C tripping characteristic, 6 A rated current at 35 °C, 10 kA DC breaking capacity per IEC 60947-2.","salesMarkdown":"## What this MCB is and where it fits The Siemens 5SY5406-7CC is a 4-pole SENTRON miniature circuit breaker with a C-curve tripping characteristic, rated 6 A at 35 °C and carrying a 10 kA DC breaking capacity per IEC 60947-2. It snaps onto a DIN rail via the quick assembly system and occupies 4 modular width units (72 mm) in the panel. The IP20 enclosure (with connected conductors) suits it for installation inside a distribution board or control cabinet — not for wet or outdoor locations. ## Ratings that decide the fit The C-curve means the magnetic trip activates at 5 to 10 times rated current — standard for motor and transformer branch circuits where inrush is moderate. At 35 °C the breaker holds 6 A continuous; derate to 5.32 A at 40 °C, 4.95 A at 45 °C, 4.55 A at 50 °C, and 4.1 A at 55 °C (–). If the panel ambient runs above 40 °C, size the upstream load to the derated figure, not the 35 °C number. The DC breaking capacity of 10 kA at up to 1000 V DC is the headline number for DC bus or battery-string protection. That 10 kA is the maximum fault current the breaker can safely interrupt under IEC 60947-2 — if the available fault current at the panel exceeds that, you need a current-limiting upstream device or a higher-rated breaker. Operating temperature spans -40 °C to 75 °C, with humidity derating: max 95% RH up to 55 °C, dropping to 55% at 70 °C and 35% at 75 °C. Vibration resistance per IEC 60068-2-6 is ±1 mm at 5–25 Hz and 50 m/s² at 25–150 Hz — fine for machine-mounted panels but not for direct engine-mount without isolation. ## Panel integration notes Mounts in any position on a DIN rail via the quick assembly system. Depth is 76 mm, with 70 mm installation depth behind the panel face. Width of 72 mm equals 4 modular units.","metaTitle":"Siemens 5SY5406-7CC SENTRON MCB, 4P C-6A, 10kA DC","metaDescription":"Siemens 5SY5406-7CC SENTRON miniature circuit breaker, 4-pole, C-curve, 6A at 35°C, 10kA DC breaking capacity per IEC 60947-2. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY5406-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit-breaker 880 V DC 10kA, 4-pole, C, 6A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at DC rated value":"880 V","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":"II","Combined Terminal Top":"Yes","Design Of The Product":"Machine manufacture / industry","at 35 °C rated value":"6 A","at 40 °C rated value":"5.32 A","at 45 °C rated value":"4.95 A","at 50 °C rated value":"4.55 A","at 55 °C rated value":"4.1 A","according to EN 61346-2":"F","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Consider polarity","Tripping Characteristic Class":"C","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":"DC","at DC according to IEC 60947-2 rated value":"10 kA","operating voltage at DC rated value maximum":"1 000 V","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Extension Installable Supplementary Devices":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4127d0c3c34eb5937739d8839752c775.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=27224&mlfb=5SY5406-7CC"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5406-7CC","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/5SY5406-7CC 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}}