{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4345-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4345-7","canonicalUrl":"https://aoctrl.com/siemens/5SY4345-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4345-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4345-7, 3-pole miniature circuit breaker, C tripping characteristic, rated at 10 kA (EN 60898-1) and 15 kA (IEC 60947-2), 400 V AC, 60 V DC, 3 modular units width.","salesMarkdown":"## Mounting & Integration The 5SY4345-7 occupies 3 modular width units (54 mm wide) and 90 mm tall, with a depth of 76 mm and an installation depth of 70 mm. It snaps onto DIN rail via the quick assembly system and accepts any mounting position. Sealable cover is provided. The combined terminals (top and bottom) accept copper conductors and are rated for 50/60 Hz operation. Pollution degree 3 and overvoltage category III allow use in dirty or surge-prone environments. ## Standards & Compliance Compliant with IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077. Halogen-free and silicon-free. Operating temperature -40°C to 75°C, with humidity derating per curve. IP20 with connected conductors.","metaTitle":"Siemens 5SY4345-7 SENTRON MCB, 3P C-Curve, 10kA","metaDescription":"Siemens 5SY4345-7 SENTRON 3-pole MCB, C characteristic, 10 kA (EN 60898-1), 15 kA (IEC 60947-2), 400 V AC. Active production. 3 modular units width.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"3","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"15 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"3.1 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$68.58","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=237824&mlfb=5SY4345-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4345-7/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4345-7","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/5SY4345-7 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}}