{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4325-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4325-8","canonicalUrl":"https://aoctrl.com/siemens/5SY4325-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4325-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4325-8, 3-pole miniature circuit breaker, D tripping characteristic, 10 kA breaking capacity per EN 60898, 54 mm wide, for DIN-rail mounting.","salesMarkdown":"## Breaking capacity across three standards The 5SY4325-8: That makes it usable in DC distribution panels — battery banks, UPS outputs, or solar combiner boxes — as long as the system voltage stays under 72 V and the prospective fault current does not exceed 15 kA. ## D-curve trip and load type That is deliberately high — it is meant for loads with a large inrush surge, such as motors, transformers, or welding equipment, where a B- or C-curve breaker would nuisance-trip on startup. On a packaging line with several small conveyors starting simultaneously, this D-curve MCB holds through the inrush and clears only on a hard fault. Rated operational voltage is 400 V AC (three-phase) and 440 V AC for both multi-phase and single-phase operation. The quick-assembly fastening system snaps onto the rail without tools and releases with a screwdriver push — standard for SENTRON series MCBs. The IP20 protection class (with connected conductors) is typical for enclosed distribution boards; the breaker itself is not intended for wet or outdoor locations without an outer enclosure.","metaTitle":"Siemens 5SY4325-8 SENTRON 3-Pole MCB, D Curve, 10 kA","metaDescription":"Siemens 5SY4325-8 SENTRON 3-pole MCB, D tripping characteristic, 10 kA (EN 60898) / 20 kA (IEC 60947-2) breaking capacity. Active production, sourced 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":"5SY4325-8","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 10kA, 3-pole, D, 25A, 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":"10 kA","according to IEC 60947-2 rated value":"20 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":"$37.72","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bf6a32d755b7ddffcea3081ea9482631.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=529074&mlfb=5SY4325-8"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4325-8","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/5SY4325-8 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}}