{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4406-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4406-6","canonicalUrl":"https://aoctrl.com/siemens/5SY4406-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4406-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4406-6, 4-pole miniature circuit breaker, tripping characteristic B, 10 kA (EN 60898) / 35 kA (IEC 60947-2) breaking capacity, 400 V AC, 72 mm width, 76 mm depth.","salesMarkdown":"## What this 4-pole B-curve MCB delivers for your panel The Siemens 5SY4406-6 is a 4-pole miniature circuit breaker from the SENTRON series, rated for 400 V AC and carrying a B tripping characteristic — meaning it trips between 3 and 5 times rated current, the standard choice for resistive and general-purpose loads where nuisance tripping from inrush is not expected. Breaking capacity is 10 kA per EN 60898-1 and 35 kA per IEC 60947-2, with a DC rating of 15 kA at 60 V (max 72 V) per IEC 60947-2, and 5 kA under UL 1077 / CSA C22.2 No.235 — so it covers both residential-style and industrial fault-current levels in the same footprint. ## Standards and compliance — what the approvals mean for your install The 5SY4406-6 is certified to IEC / EN 60898-1 (the residential and commercial MCB standard) and IEC / EN 60947-2 (the industrial breaker standard), plus UL 1077 and CSA C22.2 No.235 — so it is accepted in European, UK, and North American installations where supplementary protection is required. Halogen-free and silicon-free construction reduces the risk of corrosive gas emission under fault — relevant for sealed enclosures or environments sensitive to silicone outgassing.","metaTitle":"Siemens 5SY4406-6 SENTRON MCB, 4P, B-curve, 10 kA IEC, 35 kA","metaDescription":"Siemens 5SY4406-6 SENTRON 4-pole miniature circuit breaker, B characteristic, 10 kA (EN 60898) / 35 kA (IEC 60947-2) breaking capacity, 400 V AC. Active production, sourced to orde","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY4406-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","description":"Miniature circuit breaker 400 V 10kA, 4-pole, B, 6 A, D=70 mm","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 AC rated value":"400 V","at DC rated value":"60 V","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","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"B","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"35 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","at DC according to IEC 60947-2 rated value":"15 kA","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":"2.1 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2b3ba6929fd05a8e2b300f3999d81021.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=46829&mlfb=5SY4406-6"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 5SY4406-6?","answer":"The breaker is certified to IEC / EN 60898-1, IEC / EN 60947-2, UL 1077, and CSA C22.2 No.235, and is halogen-free and silicon-free."},{"question":"Will 5SY4406-6 drop into a panel specified around 5SY4140-7 without rewiring?","answer":"Both are 4-pole SENTRON MCBs with the same 72 mm width and DIN-rail mounting, so the footprint is identical — no rewiring needed for the panel layout, but verify the tripping characteristic and breaking capacity match your coordination study."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4406-6","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/5SY4406-6 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}}