{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4401-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4401-7","canonicalUrl":"https://aoctrl.com/siemens/5SY4401-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4401-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4401-7, 4-pole miniature circuit breaker, C-curve, 1 A rated current, 76 mm depth, 72 mm width, IP20.","salesMarkdown":"Siemens 5SY4401-7 SENTRON miniature circuit breaker, 4-pole, 1 A rating, C-trip curve. It's the line-side protection for small three-phase loads like control transformers or VFD inputs where the fault level stays under 35 kA. Track which standard governs your panel — the UL1077 listing gives an additional commercial equipment path. At 40 °C ambient, the 1 A rating knocks down to 0.95 A; at 60 °C it's 0.85 A. If the panel runs hot, size up one frame or account for the curve. ## Mounting and Installation Mounts in any position; quick assembly system clips in without tools. IP20 with connected conductors — protect from direct contact but not from moisture. This is a current-production item. Place against a BOM line — I'll quote to order. No neutral switching on this 4-pole; the fourth pole is the switched phase only — verify if your panel expects a switched neutral.","metaTitle":"Siemens 5SY4401-7 SENTRON MCB, 4P C 1A","metaDescription":"Siemens 5SY4401-7 SENTRON 4-pole miniature circuit breaker, 1A C-curve, 10kA/35kA breaking capacity, UL1077. Current production, sealed, halogen-free. Depth 76 mm.","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":"5SY4401-7","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, C, 1A, 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","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","at AC / rated value":"1 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Energy Limitation Class":"3","according to EN 61346-2":"F","at 35 °C / rated value":"1 A","at 40 °C / rated value":"0.95 A","at 45 °C / rated value":"0.93 A","at 50 °C / rated value":"0.9 A","at 55 °C / rated value":"0.88 A","at 60 °C / rated value":"0.85 A","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","Tripping Characteristic Class":"C","Position / Of Power Supply Cord":"Any","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","Value Range / Of The Supply Voltage Frequency":"50/60 Hz","at DC / according to IEC 60947-2 / rated value":"15 kA","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","vibration resistance / according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$365.31","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e15a709b7d6372eb2a378af6397fe455.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=143046&mlfb=5SY4401-7"},"ai":{"faq":[{"question":"What are the key dimensions?","answer":"Depth 76 mm, width 72 mm, height 90 mm, occupies 4 modular width units on DIN rail."},{"question":"What compliance standards does it meet?","answer":"IEC/EN 60898-1, IEC/EN 60947-2, and UL1077."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4401-7","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/5SY4401-7 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}}