{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7450-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7450-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7450-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7450-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7450-7CC miniature circuit breaker, 4-pole, C-curve, 50 A rated at AC, 20 kA breaking capacity per IEC 60947-2, 440 V AC multi-phase, 4 MW units, IP20.","salesMarkdown":"The 20 kA breaking capacity per IEC 60947-2 tells you it can safely interrupt fault currents up to that level at 400 V without upstream damage; under UL 1077 it's rated 5 kA, covering North American panelboard supplemental protection. Temperature derating is baked in: at 40 °C it holds 47.25 A, at 50 °C it's 44.3 A, and at 55 °C it's 42.75 A. The operating range is -40 to 75 °C, so it shrugs off the cold start in an unheated pit or mill building. ## Where it goes — deployment context This MCB is designed for mechanical engineering and general industry — the kind of panel that feeds a crusher conveyor, a flotation cell motor, or a ventilation fan. The quick assembly system means you can clip it in and bus-bar it without wrestling with loose hardware. Sealable, halogen-free, and silicon-free — important for panels where outgassing could foul contacts or where the inspector wants a tamper-proof lock.","metaTitle":"Siemens SENTRON 5SY7450-7CC MCB, 4P, 50 A, C-Curve, 20 kA IE","metaDescription":"Siemens SENTRON 5SY7450-7CC miniature circuit breaker, 4-pole, 50 A, C-trip characteristic, 20 kA breaking capacity per IEC 60947-2. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"72 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"50 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"50 A","at 40 °C / rated value":"47.25 A","at 45 °C / rated value":"45.8 A","at 50 °C / rated value":"44.3 A","at 55 °C / rated value":"42.75 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"20 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","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","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"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=28473&mlfb=5SY7450-7CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7450-7CC/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY7450-7CC?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time — we source through independent distribution and quote to order."},{"question":"What is 5SY7450-7CC's listed depth (76 mm) on this component line?","answer":"The depth is 76 mm, with an installation depth of 70 mm. That fits standard 80 mm deep enclosures with room for wiring."},{"question":"What is 5SY7450-7CC's listed width (72 mm) on this component line?","answer":"The width is 72 mm, which corresponds to 4 modular width units. It occupies one extra slot compared to a 3 MW breaker like the 5SY6332-7CC."},{"question":"Will 5SY7450-7CC drop into a panel that was specified around 5SY6332-7CC without rewiring?","answer":"It will fit the same DIN rail and accept the same bus-bar system, but it's 4 MW wide (72 mm) versus the 3 MW of the 5SY6332-7CC. You'll need an extra module space in the enclosure — no rewiring required if the bus-bar spans the extra slot."},{"question":"What compliance documentation does this brand provide for 5SY7450-7CC (RoHS, REACH, UL, IEC)?","answer":"The MCB carries IEC 60947-2 (20 kA) and UL 1077 / CSA C22.2 No. 235 (5 kA) ratings. It is halogen-free and silicon-free, which supports RoHS/REACH compliance. Siemens typically provides a declaration of conformity and material data sheet on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7450-7CC","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/5SY7450-7CC 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}}