{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4320-7-ZW09","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4320-7-ZW09","canonicalUrl":"https://aoctrl.com/siemens/5SY4320-7-ZW09","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4320-7-ZW09","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4320-7-ZW09, 3-pole miniature circuit breaker, C-curve, 20 A rated current, 10 kA (EN 60898-1) / 20 kA (IEC 60947-2) breaking capacity, 3 modular units wide.","salesMarkdown":"It's a current-production part — no lifecycle concerns for new BOM lines or spares restocking. DC rating on the 60947-2 side is 15 kA at 60 V. That IEC 60947-2 / UL 1077 dual-rating is what lets you drop this into a UL 508A industrial control panel without a separate series fuse for SCCR compliance, as long as the available fault current stays under the 5 kA UL 1077 mark. Depth behind the panel is 70 mm installation depth; overall depth 76 mm. Combined top and bottom terminals let you loop feed-through without extra links — saves a terminal block row in dense layouts. Sealable for lockout/tagout compliance. Halogen-free and silicon-free construction matters in clean-room or semiconductor fab zones where outgassing contaminates optics or wafers. Ambient temperature range -40 to 75 °C with humidity derating: max 95% RH at 55 °C, tapering to 35% at 75 °C. Rated for 50/60 Hz AC supply. Operating voltage AC 400 V, with multi-phase and single-phase operation up to 440 V. DC operating voltage max 72 V.","metaTitle":"Siemens 5SY4320-7-ZW09 SENTRON MCB, 3P C-Curve, 20A","metaDescription":"Siemens 5SY4320-7-ZW09 SENTRON 3-pole miniature circuit breaker, C-curve, 20 A. Breaking capacity 10 kA (EN 60898-1) / 20 kA (IEC 60947-2). Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY4320-7-ZW09","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","description":"Miniature circuit breaker 400 V 10kA, 3-pole, C, 20 A, D=70 mm Multi-Unit Packaging (36 Stück)","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":"20 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","supply voltage with single-phase operation at AC rated value":"230 V","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ec151db1326a6aa55f48bb9483f5a328.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1558931&mlfb=5SY4320-7-ZW09"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4320-7-ZW09?","answer":"10 kA per EN 60898-1, 20 kA per IEC 60947-2 at 400 V AC, and 15 kA per IEC 60947-2 at 60 V DC. For UL 1077 applications the rating is 5 kA."},{"question":"Will 5SY4320-7-ZW09 drop into a panel specified around 5SY4140-7?","answer":"Mechanically yes — same 3-module-wide DIN-rail footprint, same quick-assembly fastening, same terminal arrangement. The difference is the current rating: 5SY4320-7-ZW09 is a 20 A C-curve, while 5SY4140-7 is a lower-rated variant. No rewiring needed if the branch circuit load is within the 20 A rating."},{"question":"Where can I buy 5SY4320-7-ZW09?","answer":"Sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4320-7-ZW09","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/5SY4320-7-ZW09 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}