{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6025-6KL","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6025-6KL","canonicalUrl":"https://aoctrl.com/siemens/5SY6025-6KL","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6025-6KL","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SY6025-6KL, 1P+N, B-curve 25 A, 230 V AC, 6 kA breaking capacity per EN 60898, 18 mm wide, IP20.","salesMarkdown":"## What it is and what the ratings mean The Siemens 5SY6025-6KL is a SENTRON miniature circuit breaker (MCB) rated 25 A at 230 V AC with a B-curve tripping characteristic and a 6 kA breaking capacity per EN 60898. The B-curve means it trips between 3 and 5 times rated current — standard for resistive and general-purpose loads where inrush is low, like lighting circuits, socket outlets, and control transformers. The 6 kA rating tells you it can safely interrupt a fault current up to that level at 230 V without welding contacts or failing to clear; that's the standard domestic and light commercial interrupting rating in Europe. The 1P+N configuration switches the phase and breaks the neutral, which is common for single-phase final subcircuits where you want overcurrent protection on the line and a switched neutral for isolation. The 18 mm width (1 width unit) means it snaps onto standard DIN rail and occupies exactly one module position in a distribution board — that's another SKU I don't need to guess about when planning panel fill. Depth is 76 mm, installation depth 70 mm, so it clears most shallow enclosures without a gland-plate conflict. ## Where it goes and how it mounts Mounts on standard DIN rail in any position. The IP20 rating with connected conductors means it is for dry indoor enclosures only. The sealable feature lets you lock the toggle in the ON or OFF position with a padlock hasp — useful for lockout/tagout on a dedicated machine circuit without pulling the whole board cover.","metaTitle":"Siemens 5SY6025-6KL SENTRON MCB, B-Curve 25 A 1P+N 6 kA","metaDescription":"Siemens 5SY6025-6KL SENTRON miniature circuit breaker, 25 A rated, B-curve, 1P+N, 6 kA breaking capacity per EN 60898. Current lifecycle stage. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"standard rail","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":"No","Energy limiting class":"3","Number of width units":"1","Number of poles / Note":"1P+N","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"No","Current / at AC / rated value":"25 A","Tripping characteristic class":"B","acc. to EN 60898 / rated value":"6 kA","Position / of power supply cord":"Any","Product feature / Touch protection":"Yes","Influence of the surrounding temperature":"Periodically +55°C, max. 95% humidity","Vibration resistance / acc. to IEC 60068-2-6":"Yes","with single-phase operation / at AC / maximum":"250 V","Product function / neutral conductor switching":"Yes"}},"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=340504&mlfb=5SY6025-6KL","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6025-6KL/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 5SY6025-6KL?","answer":"The depth is 76 mm, with an installation depth of 70 mm. That's standard for the SENTRON 5SY6 series and clears most shallow enclosures."},{"question":"Will 5SY6025-6KL drop into a panel specified around 5SY6020-7KL without rewiring?","answer":"Yes — both are 1P+N, 18 mm wide, same depth and mounting. The only difference is the rating: 5SY6025-6KL is 25 A B-curve, while 5SY6020-7KL is 20 A C-curve. If the circuit was designed for 20 A C-curve, swapping to 25 A B-curve changes the trip coordination — verify the load type and upstream protection before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6025-6KL","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/5SY6025-6KL 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}}