{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7320-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7320-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7320-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7320-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7320-8CC miniature circuit breaker, 3-pole, 20 A rated current, D tripping characteristic, 25 kA breaking capacity per IEC 60947-2 at 400 V AC, 72 V DC max.","salesMarkdown":"## What this 5SY7320-8CC does on the line On DC circuits it's rated up to 72 V, so it handles control power supplies and DC bus protection within that voltage ceiling. It's 3 width units (54 mm wide), 90 mm tall, and 76 mm deep with an installation depth of 70 mm. Terminals accept solid or stranded copper from 0.75 to 35 mm², with a tightening torque of 2.5 to 3.5 N·m. Both top and bottom have combined terminals (screw and clamp), so you can daisy-chain or ring-tongue without adapters. Rated IP20 with conductors connected — fine inside a closed enclosure, not for wet or dusty locations. Halogen-free and silicon-free construction, so it won't outgas corrosive compounds in sealed enclosures or near sensitive electronics. Humidity tolerance is specified: max 95% at 55 °C, derating to 55% at 70 °C and 35% at 75 °C. Sealable terminals allow lockout/tagout compliance. Touch protection is built in — fingers won't reach live parts when wired.","metaTitle":"Siemens SENTRON 5SY7320-8CC MCB, 3P 20A D-Curve, 25kA","metaDescription":"Siemens SENTRON 5SY7320-8CC miniature circuit breaker, 3-pole 20A D-curve, 25kA breaking capacity per IEC 60947-2. 400V AC, 72V DC max. Current lifecycle stage. Sourced to order; R","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":"54 mm","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Wertebereich":"-25 ... +55 °C","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","Ambient temperature":"-40 ... +75 °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":"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":"5SY7CC","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"20 A","Tripping characteristic class":"D","at DC / rated value / maximum":"72 V","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"25 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 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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e7cc693e7bd0963eea895df7223b9830.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=296638&mlfb=5SY7320-8CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7320-8CC/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7320-8CC","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/5SY7320-8CC 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}}