{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8325-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8325-8","canonicalUrl":"https://aoctrl.com/siemens/5SY8325-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8325-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8325-8, 3-pole miniature circuit breaker, D tripping characteristic, 25 A rated current, 30 kA breaking capacity per IEC 60947-2.","salesMarkdown":"## Breaking capacity — the number that decides coordination For DC circuits it carries 15 kA per the same standard. Under UL 1077 and CSA C22.2 No. 235 the rating is 5 kA — a different test protocol, not a derating; if the panel is built to North American supplementary-protector rules, that's the number the inspector checks. Rated for ambient temperatures from -40 °C to 75 °C, with a derating curve: at 50 °C the continuous current drops to 24.38 A, at 55 °C to 23.72 A. Humidity derating applies above 55 °C — max 95% RH up to 55 °C, then 55% RH at 70 °C, then 35% RH at 75 °C. Mounting position is unrestricted. ## Compliance documentation The 5SY8325-8 carries IEC 60947-2 and UL 1077 / CSA C22.2 No. 235 approvals. The product designation per IEC 81346-2 and DIN EN 61346-2 is F (protective device). Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. Touch protection is integrated. The manufacturer provides RoHS and REACH declarations on request.","metaTitle":"Siemens 5SY8325-8 SENTRON MCB, 3P D 25A, 30kA IEC","metaDescription":"Siemens 5SY8325-8 SENTRON miniature circuit breaker, 3-pole, D-curve, 25 A rated, 30 kA breaking capacity per IEC 60947-2. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","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","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":"25 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","acc. to DIN EN 61346-2":"F","at 45 °C / rated value":"25 A","at 50 °C / rated value":"24.38 A","at 55 °C / rated value":"23.72 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"3","Tripping Characteristic Class":"D","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"30 kA","Product Feature / Touch Protection":"Yes","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","Type Of Voltage / Of The Operating Voltage":"AC","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 Component / 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a2205b0df227c98f8c967700f8079ff9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=367808&mlfb=5SY8325-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY8325-8/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SY8325-8 and get a price?","answer":"The 5SY8325-8 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the 5SY8325-8's depth?","answer":"The depth is 76 mm, with an installation depth of 70 mm. Width is 54 mm (3 modular units), height is 90 mm."},{"question":"Will the 5SY8325-8 drop into a panel specified for the 5SY6602-8?","answer":"Both are 3-pole SENTRON MCBs on the same DIN-rail footprint (3 MW / 54 mm wide). The 5SY8325-8 is a D-curve 25 A device with 30 kA breaking capacity; the 5SY6602-8 is a different rating and curve. The physical swap is straightforward — same rail, same terminal spacing — but the protective settings must match the circuit design. Check the tripping characteristic and rated current against the load before substituting."},{"question":"What compliance documentation does Siemens provide for the 5SY8325-8?","answer":"The breaker is approved to IEC 60947-2, UL 1077, and CSA C22.2 No. 235. RoHS and REACH declarations are available from the manufacturer. Vibration resistance per IEC 60068-2-6 is documented."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8325-8","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/5SY8325-8 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}