{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6525-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6525-8","canonicalUrl":"https://aoctrl.com/siemens/5SY6525-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6525-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6, miniature circuit breaker, 25 A, D characteristic, 2-pole (1P+N), 6 kA (EN 60898) / 15 kA (IEC 60947-2), 230 V AC, 50/60 Hz, IP20.","salesMarkdown":"It's a 2-pole unit wired as 1P+N — meaning it switches the live conductor and switches the neutral, which is handy when you need to fully isolate a single-phase circuit without pulling a separate neutral disconnect. The D curve holds through 10–20× rated current before instant tripping, matching the surge profile of inductive equipment. That dual rating means it's accepted in both commercial and heavy-industrial specs without an extra fuse backup. For North American installs, it also carries a 5 kA rating at AC per UL 1077 and CSA C22.2 No. 235 — enough for most supplementary-protection applications in machinery built to those codes. Installation depth is 70 mm, and overall depth is 76 mm including the terminals. Mountable in any position, which simplifies layout in cramped enclosures where you can't guarantee vertical orientation. Sealable (padlockable) handle available if the install requires lockout/tagout compliance. Operating temperature range from -40 °C to 75 °C, with humidity derating: max 95% RH up to 55 °C, tapering to 35% at 75 °C. Design acc. to DIN EN 61346-2 and DIN EN 81346-2 (function code F) for consistent reference in panel documentation. Overvoltage category III for fixed-installation protection.","metaTitle":"Siemens 5SY6525-8 SENTRON MCB, 25 A, D Curve, 2-Pole, 6 kA","metaDescription":"Siemens 5SY6525-8 SENTRON miniature circuit breaker, 25 A, D tripping characteristic, 2-pole 1P+N, 6 kA per EN 60898, 15 kA per IEC 60947-2. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 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":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"230 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Number of width units":"2","Number of poles / Note":"1P+N","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","Current / at AC / rated value":"25 A","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","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":"Yes","with single-phase operation / at AC / rated value":"250 V","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=418517&mlfb=5SY6525-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6525-8/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SY6525-8 and get a price?","answer":"Sourced and quoted to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time."},{"question":"Will the 5SY6525-8 drop into a panel specified for the 5SY4140-7 without rewiring?","answer":"Both are 2-pole 1P+N SENTRON MCBs on the same DIN-rail footprint (36 mm wide, 2 width units), so the mechanical fit and terminal layout are the same. However, the 5SY6525-8 is a D-curve 25 A unit, while the 5SY4140-7 is a different rating and characteristic — verify the load's inrush profile and ampacity before swapping."},{"question":"What is the 5SY6525-8's depth?","answer":"Overall depth is 76 mm; installation depth behind the panel surface is 70 mm."},{"question":"What compliance documentation does Siemens provide for the 5SY6525-8?","answer":"The MCB carries ratings per EN 60898 (6 kA), IEC 60947-2 (15 kA), and UL 1077 / CSA C22.2 No. 235 (5 kA). It is halogen-free and silicon-free. Standard Siemens declarations for RoHS and REACH are available with the product documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6525-8","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/5SY6525-8 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}}