{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6325-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6325-8","canonicalUrl":"https://aoctrl.com/siemens/5SY6325-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6325-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series, miniature circuit breaker, 3-pole D-curve, 25 A, 400 V AC, 6 kA (EN 60898) / 15 kA (IEC 60947-2), 3 width units, IP20.","salesMarkdown":"The Siemens 5SY6325-8 is a SENTRON 5SY6 series miniature circuit breaker — 3-pole, D tripping characteristic, rated 25 A at 400 V AC. The D-curve means it tolerates inrush spikes up to 10–20× rated current before tripping magnetically, which makes it the right choice for motor starters, transformers, or welding equipment where the start-up surge would nuisance-trip a B or C curve. Breaking capacity is 6 kA per EN 60898 for general distribution, or 15 kA per IEC 60947-2 for industrial panel duty — so it can interrupt a fault up to that level without upstream damage. The 15 kA rating under 60947-2 is the one to spec for machine control panels where higher fault current is expected. ## Mounting and integration Snaps onto DIN rail via the quick-assembly system — no tools needed for the rail, but the combined top and bottom terminals accept the usual ring or fork lugs. Mounting position is any, so it fits horizontal or vertical busbars without derating. Occupies 3 width units (54 mm). Depth is 76 mm, installation depth 70 mm from the rail face — check your enclosure depth before committing the BOM line. IP20 with conductors connected, so it's panel-internal only; not rated for washdown or outdoor exposure. ## Environmental and compliance Halogen-free and silicon-free construction — relevant for clean-room or sensitive electronics environments where outgassing matters. Ambient temperature range is -40 °C to 75 °C, with humidity derating above 55 °C (95% RH up to 55 °C, 55% at 70 °C, 35% at 75 °C). Overvoltage category III, pollution degree 3 — suitable for fixed installations inside industrial enclosures where conductive dust or condensation is possible. Sealable design allows lockout/tagout compliance.","metaTitle":"Siemens 5SY6325-8 SENTRON MCB, 3P D-curve 25A 6kA/15kA","metaDescription":"Siemens 5SY6325-8 SENTRON miniature circuit breaker, 3-pole D-curve 25 A, 400 V AC, 6 kA (EN 60898) / 15 kA (IEC 60947-2). Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50/60 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","Number of poles":"3","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Degree of pollution":"3","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Number of width units":"3","Number of poles / Note":"3P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY6","Suitability for operation":"Mechanical engineering / industry","Tripping characteristic class":"D","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"6 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"15 kA","Product feature / Touch protection":"Yes","Operating current / at AC / rated value":"25 A","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","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 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":"$85.37","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=264060&mlfb=5SY6325-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6325-8/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY6325-8?","answer":"6 kA per EN 60898 for general distribution, and 15 kA per IEC 60947-2 for industrial panel duty."},{"question":"Where can I buy the 5SY6325-8?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What does the D-curve mean on this breaker?","answer":"The D tripping characteristic allows magnetic trips at 10–20× rated current, so it handles high inrush from motors, transformers, or welding loads without nuisance tripping."},{"question":"Will 5SY6325-8 fit a panel designed for 5SY6613-8?","answer":"Both are 3-pole SENTRON 5SY6 breakers with the same 54 mm width (3 width units) and DIN-rail mounting, so the footprint is identical — no rewiring needed for the panel cutout. Verify the current and curve rating match your circuit requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6325-8","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/5SY6325-8 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}}