{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7301-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7301-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7301-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7301-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7301-8, 3-pole miniature circuit breaker, D tripping characteristic, 15 kA (EN 60898) / 50 kA (IEC 60947-2), 400 V AC, 3 MW units.","salesMarkdown":"## Siemens SENTRON 5SY7301-8 — D-curve MCB for high-inrush loads For a panel builder, that means fewer callbacks for false trips on compressor or conveyor feeds. Rated breaking capacity spans three standards: 15 kA at 400 V AC per EN 60898-1 (household / commercial), 50 kA at 400 V AC per IEC 60947-2 (industrial), and 5 kA per UL 1077 / CSA C22.2 No.235 for North American supplementary protection. The 50 kA industrial rating gives selectivity headroom downstream of a larger feeder breaker — useful in a machine control panel where fault currents can hit that level. At 3 MW wide (54 mm), it fits standard enclosure cutouts. ## Environmental and compliance specs Ambient operating range from -40 °C to 75 °C, with humidity derating above 55 °C (max 95% RH at 55 °C, tapering to 35% at 75 °C). Vibration tested per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz.","metaTitle":"Siemens 5SY7301-8 SENTRON MCB, D-curve, 3-pole, 15/50 kA","metaDescription":"Siemens SENTRON 5SY7301-8 miniature circuit breaker, 3-pole, D tripping characteristic, 15 kA (EN 60898) / 50 kA (IEC 60947-2), 400 V AC. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY7301-8","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 15kA, 3-pole, D, 1 A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","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","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"3","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to EN 60898 rated value":"15 kA","according to IEC 60947-2 rated value":"50 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":"1.1 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8d858694129cb86817620f50b9d88c12.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=63768&mlfb=5SY7301-8"},"ai":{"faq":[{"question":"What is the 5SY7301-8 used for?","answer":"It is a 3-pole D-curve miniature circuit breaker for protecting circuits with high inrush currents — motor starters, transformers, welding equipment — in industrial control panels and distribution boards."},{"question":"What breaking capacity does the 5SY7301-8 have?","answer":"15 kA per EN 60898-1 at 400 V AC, 50 kA per IEC 60947-2 at 400 V AC, and 5 kA per UL 1077 / CSA C22.2 No.235."},{"question":"What compliance documentation is available for the 5SY7301-8?","answer":"The breaker is certified to IEC / EN 60898-1, IEC / EN 60947-2, and UL 1077 / CSA C22.2 No.235. It is halogen-free and silicon-free, meeting typical RoHS/REACH requirements for industrial equipment."},{"question":"Where can I buy the 5SY7301-8?","answer":"The 5SY7301-8 is sourced to order against an RFQ through independent distribution channels. 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/5SY7301-8","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/5SY7301-8 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}}