{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6614-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6614-8","canonicalUrl":"https://aoctrl.com/siemens/5SY6614-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6614-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series, 5SY6614-8 miniature circuit breaker, 4-pole (3P+N), 0.3 A rated current, D tripping characteristic, 6 kA (EN 60898) / 30 kA (IEC 60947-2) breaking capacity.","salesMarkdown":"## MCB for low-current D-curve protection The Siemens 5SY6614-8 is a 4-pole (3P+N) miniature circuit breaker from the SENTRON 5SY6 series, rated 0.3 A with a D tripping characteristic. Breaking capacity is 6 kA per EN 60898 for general distribution and 30 kA per IEC 60947-2 for industrial panel duty, so it handles fault levels common in 400 V AC switchgear without cascading upstream. Rated 400 V AC phase-to-phase, with a maximum DC rating of 72 V for control-circuit applications. The 0.3 A rating is uncommon — most MCBs in this frame start at 1 A or higher — so this part fills the niche for protecting low-current branches where a fuse would normally go, but where resettable overcurrent protection and selectivity are required. IP20 with connected conductors; touch protection is built in. Ambient temperature range -25 to +55 °C operating, -40 to +75 °C storage. Sealable (padlockable) for lockout/tagout procedures. Halogen-free and silicon-free construction suits environments where outgassing must be minimized, such as clean rooms or sealed enclosures. Rated breaking capacity: 6 kA per EN 60898 (household-type MCB standard), 30 kA per IEC 60947-2 (industrial circuit-breaker standard), and 15 kA at DC per IEC 60947-2. Also carries a 5 kA rating at AC per UL 1077 and CSA C22.2 No.235 for North American supplementary protection applications.","metaTitle":"Siemens 5SY6614-8 SENTRON MCB, 4P 0.3A D-curve, 6kA","metaDescription":"Siemens 5SY6614-8 SENTRON miniature circuit breaker, 4-pole 3P+N, 0.3 A rated, D tripping characteristic, 6 kA per EN 60898, 30 kA per IEC 60947-2. Active production, sourced to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"72 mm","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","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":"4","Number of poles / Note":"3P+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":"0.3 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","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"Yes","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","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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=123468&mlfb=5SY6614-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6614-8/alternatives.json"},"ai":{"faq":[{"question":"What is 5SY6614-8's rated current and tripping curve?","answer":"Rated 0.3 A with a D tripping characteristic (10–20× In magnetic trip), suitable for loads with high inrush such as small transformers or solenoid valves."},{"question":"What breaking capacity does 5SY6614-8 have?","answer":"6 kA per EN 60898, 30 kA per IEC 60947-2 at 400 V AC, and 15 kA at DC per IEC 60947-2. Also rated 5 kA per UL 1077 / CSA C22.2 No.235."},{"question":"How do I get current pricing and availability for 5SY6614-8?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability confirmation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6614-8","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/5SY6614-8 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}}