{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4306-7-ZW09","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4306-7-ZW09","canonicalUrl":"https://aoctrl.com/siemens/5SY4306-7-ZW09","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4306-7-ZW09","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4306-7-ZW09, 3-pole miniature circuit breaker, C-curve, 10 kA (EN 60898-1) / 35 kA (IEC 60947-2), 400 V AC, IP20, 54 x 90 x 76 mm.","salesMarkdown":"On DC circuits it's rated 15 kA at 60 V (72 V max), so it handles control-power and small DC bus protection, not just lighting panels. It's not a D-curve for high-inrush loads like large drives, nor a B-curve for long cable runs. For a 3-pole unit at 3 MWUs (modular width units), it occupies 54 mm on the DIN rail — that's three standard 18 mm slots, so check your enclosure fill factor before committing. Ambient range runs -40 to 75 °C, which covers most unheated electrical rooms and outdoor cabinets in temperate climates. Derate above 40 °C per the thermal curve in the datasheet; the humidity limits (95% at 55 °C, stepping down to 35% at 75 °C) are typical for pollution degree 3 environments — think factory floors, not clean rooms. ## Standards and approvals — what each rating means for your panel This breaker carries dual certification: IEC/EN 60898-1 for residential and light commercial (10 kA), and IEC/EN 60947-2 for industrial use (35 kA). UL 1077 and CSA C22.2 No.235 add a 5 kA supplementary-protector rating for North American panels where the MCB is used downstream of a branch-circuit OCPD. Dimensions: 54 mm wide (3 MWUs), 90 mm tall, 76 mm deep, with a 70 mm installation depth. Snap-on DIN rail mount in any position. Combined top and bottom terminals simplify daisy-chaining — no need for separate busbar jumpers on the load side.","metaTitle":"Siemens 5SY4306-7-ZW09 SENTRON MCB, 3P C-Curve, 10kA/35kA","metaDescription":"Siemens 5SY4306-7-ZW09 SENTRON miniature circuit breaker, 3-pole, C-curve, 10 kA per EN 60898-1, 35 kA per IEC 60947-2. Current production, sourced to order. IP20, -40 to 75°C.","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":"5SY4306-7-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, 6 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":"35 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":"1.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4321dbcf5b11027b5a522039c16a957d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1558930&mlfb=5SY4306-7-ZW09"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4306-7-ZW09?","answer":"10 kA per EN 60898-1, 35 kA per IEC 60947-2 at 400 V AC, and 15 kA at 60 V DC. For UL 1077 / CSA C22.2 No.235 installations it is rated 5 kA."},{"question":"Will 5SY4306-7-ZW09 drop into a panel specified around 5SY4304-7CV?","answer":"Both are 3-pole SENTRON MCBs on the same DIN-rail footprint (54 mm wide, 3 MWUs). The 5SY4306-7-ZW09 carries a C-curve; the 5SY4304-7CV carries a different characteristic. Verify the tripping curve matches your load before swapping — the physical fit is identical, but the protection coordination may differ."},{"question":"What compliance documentation does Siemens provide for 5SY4306-7-ZW09?","answer":"The breaker is certified to IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, and CSA C22.2 No.235. It is halogen-free and silicon-free. Standard Siemens declarations of conformity and material compliance (RoHS, REACH) are available on request."},{"question":"Where can I buy 5SY4306-7-ZW09?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit the order code and quantity for a sourcing check."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4306-7-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/5SY4306-7-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}}