{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4320-7CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4320-7CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4320-7CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4320-7CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4320-7CC11, miniature circuit breaker, 3-pole, C characteristic, 10 kA breaking capacity per EN 60898, 400 V AC, 3 modular width units.","salesMarkdown":"## What it is and what it does The Siemens SENTRON 5SY4320-7CC11 is a 3-pole miniature circuit breaker with C-curve tripping characteristic, rated 10 kA breaking capacity per EN 60898 at 400 V AC. That C-curve means it trips between 5 and 10 times rated current — standard for protecting general-purpose industrial loads like motor feeders, control transformers, and lighting circuits where inrush isn't extreme. The 10 kA SCCR at 400 V tells you it can safely interrupt a fault up to that level without upstream damage, which is the usual requirement for distribution panels in industrial and railway applications. ## Where it fits Snaps onto DIN rail via the quick assembly system — 3 modular width units (54 mm wide), any mounting position. Installation depth is 70 mm; overall depth 76 mm. The combined terminal top and bottom accept conductors without needing separate busbar adapters for most panel layouts. Pollution degree 3 and overvoltage category III suit it for fixed installations inside enclosures where conductive dust or condensation might be present. IP20 with connected conductors — fine inside a cabinet, not for wet areas. ## Key ratings and what they mean for your panel Rated 400 V AC (multi-phase) and 440 V AC single-phase — covers most industrial supply voltages up to 480Y/277 V systems. DC rating max 72 V, so it's usable on some DC control circuits but not for higher-voltage DC bus work. Frequency 50/60 Hz. Power loss 1.7 W per pole at rated current in hot state — factor that into enclosure thermal calculations if you're packing several breakers side by side. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz — railway and mobile equipment approved. Temperature range -40 to 75 °C ambient, with humidity derating above 55 °C. Sealable, halogen-free, silicon-free — relevant for clean-room or low-outgassing specs.","metaTitle":"Siemens 5SY4320-7CC11 SENTRON MCB, 3P, C-Curve, 10 kA","metaDescription":"Siemens SENTRON 5SY4320-7CC11 miniature circuit breaker, 3-pole, C characteristic, 10 kA per EN 60898, 400 V AC. Current production. Quoted 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":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","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","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","Design Of The Product":"For railway applications","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","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","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","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":"1.7 W"}},"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=156642&mlfb=5SY4320-7CC11","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4320-7CC11/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 5SY4320-7CC11 and how is it quoted for volume purchases?","answer":"Sourced through independent distribution channels. Quoted to order against an RFQ; availability and current pricing confirmed at quote time. Volume pricing is negotiable per blanket order."},{"question":"Will 5SY4320-7CC11 drop into a panel that was specified around 5SY4310-7CV without rewiring?","answer":"Both are 3-pole SENTRON MCBs with the same 3-module width footprint and DIN-rail mounting, so the physical swap is straightforward. The key difference is the tripping characteristic — 5SY4320-7CC11 is C-curve (5–10x In), while 5SY4310-7CV is a different curve. Verify the curve matches the load's inrush profile before substituting."},{"question":"What is 5SY4320-7CC11's listed depth (76 mm) on this component line?","answer":"Overall depth is 76 mm; installation depth (behind the panel face) is 70 mm. That's standard for the SENTRON 5SY series."},{"question":"What is 5SY4320-7CC11's listed width (54 mm) on this component line?","answer":"Width is 54 mm, which corresponds to 3 modular width units (each 18 mm). Fits standard DIN-rail enclosures."},{"question":"What compliance documentation does this brand provide for 5SY4320-7CC11 (RoHS, REACH, UL, IEC)?","answer":"The part is designed for railway applications per the product designation, carries EN 60898 rating (10 kA), and is halogen-free and silicon-free. Standard SENTRON documentation includes RoHS and REACH declarations; UL and IEC certifications are typical for the series but should be confirmed per specific listing requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4320-7CC11","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/5SY4320-7CC11 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}}