{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7401-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7401-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7401-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7401-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7401-8, 4-pole miniature circuit breaker, D tripping characteristic, 1 A rated current, 400 V AC, 15 kA (EN 60898) / 50 kA (IEC 60947-2), IP20, quick-assembly system.","salesMarkdown":"The D-curve holds through the surge and clears on sustained overload or short circuit. Approvals include UL 1077 and CSA C22.2 No. 235 (5 kA), plus CE and UKCA marking per the SENTRON family. RoHS and REACH declarations are standard with the brand. The degree of pollution 3 and overvoltage category III ratings confirm it's suited for industrial control panels, not just residential. ## Environmental and handling specs Ambient temperature range is -40 °C to 75 °C, with derating for humidity: max 95% RH at 55 °C, tapering to 35% RH at 75 °C. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. Halogen-free and silicon-free construction — no outgassing concerns in sealed enclosures or near sensitive optics. Sealable terminals (top and bottom combined) and touch protection built in. Neutral conductor switching is not provided — this is a 4-pole breaker with all poles switched, but no dedicated neutral pole.","metaTitle":"Siemens 5SY7401-8 SENTRON MCB, 4P D 1A, 15/50 kA","metaDescription":"Siemens 5SY7401-8 SENTRON 4-pole miniature circuit breaker, D-curve, 1 A, 400 V AC, 15 kA (EN 60898) / 50 kA (IEC 60947-2). Current production. Quoted to order against RFQ.","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":"5SY7401-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 15kA, 4-pole, D, 1 A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","Type Of Voltage":"AC","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 AC / rated value":"400 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"4P","acc. to DIN EN 61346-2":"F","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"D","acc. to EN 60898 / rated value":"15 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"50 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","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":"15 kA","operational current / at AC / rated value":"1 A","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 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","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7f89dd01bbc1eb3f152d3fa0515f4061.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=377556&mlfb=5SY7401-8"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7401-8","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/5SY7401-8 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}}