{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6302-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6302-8","canonicalUrl":"https://aoctrl.com/siemens/5SY6302-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6302-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series miniature circuit breaker, 3-pole, D tripping characteristic, 2 A rated current, 400 V AC, 6 kA (EN 60898) / 30 kA (IEC 60947-2).","salesMarkdown":"The Siemens SENTRON 5SY6302-8 is a 3-pole miniature circuit breaker (MCB) with a D tripping characteristic, rated at 2 A at 400 V AC. It breaks 6 kA per EN 60898 for general distribution panels and 30 kA per IEC 60947-2 for industrial feeder duty, so you can use it in a sub-distribution board or a machine control cabinet without worrying about the fault level. The 3-pole body takes 3 width units (54 mm wide), and the 76 mm depth leaves room for wiring behind a shallow enclosure door. Any mounting position works, and the terminals accept top and bottom combined feed, so you can loop the supply through without extra busbars. The D-curve trips magnetically between 10× and 20× In, so at 2 A the magnetic trip threshold is 20–40 A. That keeps it from dropping out on a motor start or a capacitive load surge. The 6 kA breaking capacity under EN 60898 covers most commercial and light-industrial panels; if your transformer-fed board has a higher prospective fault current, the 30 kA rating under IEC 60947-2 gives you the headroom without changing the breaker footprint. For DC circuits, it's rated up to 72 V — fine for control-voltage loops or small DC drives. Halogen-free and silicon-free construction, so it won't outgas corrosive compounds in a sealed enclosure or near sensitive contacts.","metaTitle":"Siemens SENTRON 5SY6302-8 MCB, 3-pole D-curve, 2 A, 6 kA","metaDescription":"Siemens SENTRON 5SY6302-8 miniature circuit breaker, 3-pole, D tripping characteristic, 2 A rated, 6 kA (EN 60898) / 30 kA (IEC 60947-2). Current lifecycle. Available 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","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","Current / at AC / rated value":"2 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":"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","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":"$133.22","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=532687&mlfb=5SY6302-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6302-8/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SY6302-8?","answer":"Sourced to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time — submit an RFQ for a firm lead time and price."},{"question":"Will the 5SY6302-8 drop into a panel wired for a 5SY4140-7?","answer":"Both are 3-pole SENTRON MCBs on the same DIN-rail footprint, so the mechanical swap is straightforward. The 5SY6302-8 is a D-curve 2 A breaker; the 5SY4140-7 is a B-curve 40 A breaker — different tripping characteristic and current rating, so check your load and selectivity study before swapping."},{"question":"What compliance documentation does Siemens provide for the 5SY6302-8?","answer":"The part carries EN 60898 and IEC 60947-2 ratings, plus UL 1077 and CSA C22.2 No. 235 (5 kA at AC). It is halogen-free and silicon-free. Standard Siemens declarations for RoHS and REACH are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6302-8","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/5SY6302-8 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}}