{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4525-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4525-6","canonicalUrl":"https://aoctrl.com/siemens/5SY4525-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4525-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4 series, miniature circuit breaker, 2-pole 1P+N, 25 A, B characteristic, 10 kA (EN 60898) / 20 kA (IEC 60947-2), 230 V AC, 2 width units.","salesMarkdown":"The Siemens SENTRON 5SY4525-6 is a 2-pole miniature circuit breaker wired as 1P+N — it switches the live conductor and breaks the neutral, but the neutral pole isn't overload-protected. Rated 25 A at 230 V AC with a B tripping characteristic, meaning the magnetic trip fires at 3–5× rated current — fast enough for general-purpose resistive and light inductive loads, but not so fast it nuisance-trips on motor inrush. The 10 kA breaking capacity per EN 60898 covers the vast majority of domestic and light commercial panel fault levels; the 20 kA per IEC 60947-2 gives you the headroom if you're specifying to the industrial standard and need selectivity with an upstream device. At 36 mm wide (2 width units on a DIN rail), it fits a standard 18 mm-per-pole grid. The 76 mm depth and 70 mm installation depth mean it clears most shallow enclosures, and the 90 mm height sits flush with adjacent SENTRON devices. Mounting position is any, so you can lay it sideways in a tight gland plate area without derating. ## Terminal capacity and installation feel Accepts solid or stranded copper from 0.75 mm² up to 35 mm². Combined terminal top and bottom allows looping through the breaker. Sealable, halogen-free, silicon-free — so it's safe for clean rooms, food processing areas, and any environment where outgassing from a fault could contaminate product or sensitive electronics. IP20 with conductors connected is standard for enclosed panel mount; no extra finger-duct cover needed inside the cabinet. The humidity derating curve (max 95% RH at 55 °C, dropping to 35% at 75 °C) is the limiting factor in tropical or washdown zones — if your panel sees sustained high humidity and high temp, check the enclosure climate. ## DC ratings for mixed-voltage panels Rated for DC circuits up to 72 V with a 15 kA breaking capacity per IEC 60947-2. That covers 48 V control power and 60 V instrumentation supplies common in industrial panels. The 15 kA DC rating is lower than the AC figure, so if you're using it on a large battery bank or a DC bus, verify the prospective fault current is under that threshold.","metaTitle":"Siemens 5SY4525-6 SENTRON MCB, 25A B Curve, 2-Pole 1P+N","metaDescription":"Siemens SENTRON 5SY4525-6 miniature circuit breaker, 25A rated, B tripping characteristic, 2-pole 1P+N, 10kA IEC 60898 / 20kA IEC 60947-2. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"36 mm","title":"5SY4525-6","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 230 V 10kA, 1+N-pole, B, 25A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-40 ... +70 °C","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","Energy limiting class":"3","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":"5SY4","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"25 A","Tripping characteristic class":"B","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"20 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","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"Yes","with single-phase operation / at AC / rated value":"250 V","Mechanical service life (switching cycles) / typical":"10 000","Tightening torque [lbf·in] / with screw-type terminals":"22 ... 31 lbf·in","AWG number / as coded connectable conductor cross section":"18 ... 4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/afcd11f76763be7d36c9ab5f2a390a4e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=532701&mlfb=5SY4525-6"},"ai":{"faq":[{"question":"Where can I buy 5SY4525-6 and how do I get a price?","answer":"The 5SY4525-6 is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ and we'll confirm current availability and pricing at quote time — no stock count or price is published here."},{"question":"What is 5SY4525-6's listed depth (76 mm) on this component line?","answer":"The depth is 76 mm, with a 70 mm installation depth behind the panel face. That's shallow enough for most standard enclosures — no special deep-box required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4525-6","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/5SY4525-6 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}}