{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6414-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6414-8","canonicalUrl":"https://aoctrl.com/siemens/5SY6414-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6414-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series, miniature circuit breaker, 4-pole, 0.3 A rated current, D tripping characteristic, 400 V AC, 6 kA (EN 60898) / 30 kA (IEC 60947-2) breaking capacity.","salesMarkdown":"## What this 0.3 A D-curve MCB is for The Siemens 5SY6414-8 is a 4-pole miniature circuit breaker from the SENTRON 5SY6 series, rated at 0.3 A with a D tripping characteristic. The 0.3 A rating is a low-current branch; you'd see this protecting a control transformer secondary or a PLC power supply feed, not a main lighting circuit. ## Breaking capacity: what the dual rating means The IEC 60947-2 rating applies in industrial panels where the fault current at the bus can be higher. The 4-pole body is 72 mm wide (4 width units). Mounting position is any, which helps in tight enclosures. Rated for ambient temperature -25 to +55 °C, storage -40 to +75 °C. Halogen-free and silicon-free construction. Sealable — useful for installations that need tamper evidence. Overvoltage category III, pollution degree typical for industrial panel environment. The part carries the standard Siemens SENTRON compliance documentation package (CE, RoHS, REACH).","metaTitle":"Siemens 5SY6414-8 SENTRON MCB, 4P, 0.3 A, D Curve","metaDescription":"Siemens 5SY6414-8 SENTRON miniature circuit breaker, 4-pole, 0.3 A, D tripping characteristic, 400 V AC. Breaking capacity 6 kA (EN 60898) / 30 kA (IEC 60947-2). Active lifecycle,","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":"4P","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":"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","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=152087&mlfb=5SY6414-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6414-8/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SY6414-8 and what is the lead time?","answer":"The 5SY6414-8 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for the current lead time and price."},{"question":"What is the 5SY6414-8's depth?","answer":"The 5SY6414-8 has a depth of 76 mm, with an installation depth of 70 mm."},{"question":"What conductor sizes does the 5SY6414-8 accept?","answer":"The terminals accept 0.75 to 35 mm² solid or stranded copper conductors."},{"question":"What compliance documentation does Siemens provide for the 5SY6414-8?","answer":"The 5SY6414-8 carries standard Siemens SENTRON compliance documentation including CE marking, RoHS, and REACH declarations. The product is halogen-free and silicon-free."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6414-8","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/5SY6414-8 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}}