{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4450-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4450-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4450-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4450-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4450-7CC, 4-pole miniature circuit breaker, 50 A rated current, C tripping characteristic, 10 kA breaking capacity per EN 60898, 400 V AC, 72 V DC max, quick-assembly mounting.","salesMarkdown":"The 10 kA breaking capacity per EN 60898 tells you it can safely interrupt a fault current up to 10 kA at 400 V AC; under UL 1077 it carries a 5 kA interrupting rating, so verify the available fault current at the installation point if the panel is destined for a North American site. Rated voltage for DC applications is 72 V maximum — not a DC distribution breaker, but usable for control-circuit protection on a 48 V or 60 V DC bus. Conductor cross-section accepts 0.75 to 35 mm² solid or stranded, with a screw-terminal torque range of 2.5 to 3.5 N·m. IP20 with connected conductors — protected against finger contact, not washdown. For compliance documentation, the SENTRON series carries IEC/EN 60898 certification for the 10 kA rating and UL 1077 / CSA C22.2 No. 235 for the 5 kA rating. RoHS and REACH declarations are standard from Siemens for current-production parts — request them with your RFQ if your QA process requires them on file. The sealable cover (yes) lets you lock the handle position after commissioning, preventing unauthorized switching on a critical subfeed. For a brewery or distillery environment, keep the enclosure climate-controlled if ambient regularly exceeds 55 °C.","metaTitle":"Siemens SENTRON 5SY4450-7CC Miniature Circuit Breaker, 4P, 5","metaDescription":"Siemens SENTRON 5SY4450-7CC 4-pole MCB, 50 A rated, C tripping characteristic, 10 kA breaking capacity per EN 60898. Current production. Sourced to order. Request RFQ.","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","Wertebereich":"-25 ... +55 °C","Mounting type":"Quick assembly system","Number of poles":"4","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","Energy limiting class":"3","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":"5SY4CC","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"50 A","Tripping characteristic class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Position / of power supply cord":"Any","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/45eaffe8f3a0448d233bf73a5f4320cc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=116053&mlfb=5SY4450-7CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4450-7CC/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY4450-7CC and how do I get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time, not listed here."},{"question":"Will 5SY4450-7CC drop into a panel that was specified around 5SY6140-6CC without rewiring?","answer":"Both are 4-pole SENTRON MCBs on the same DIN-rail footprint, but the 5SY6140-6CC is a 40 A B-curve unit. The 5SY4450-7CC is 50 A C-curve — the higher current and different trip characteristic may require upstream coordination checks. Physically it fits the same rail and terminal range (0.75–35 mm²), but the protective device sizing must match the downstream cable and load."},{"question":"What compliance documentation does this brand provide for 5SY4450-7CC (RoHS, REACH, UL, IEC)?","answer":"The breaker is certified to IEC/EN 60898 (10 kA) and UL 1077 / CSA C22.2 No. 235 (5 kA). RoHS and REACH declarations are standard for current-production Siemens SENTRON parts — request them with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4450-7CC","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/5SY4450-7CC 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}}