{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6404-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6404-7","canonicalUrl":"https://aoctrl.com/siemens/5SY6404-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6404-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6404-7, 4-pole miniature circuit breaker, C tripping characteristic, 6 kA per EN 60898 / 30 kA per IEC 60947-2, 400 V AC rated voltage.","salesMarkdown":"The 4-pole design (4P) switches all four phases simultaneously, with no neutral switching, so it fits three-phase loads where the neutral is solidly bonded and does not need interruption. Rated 400 V AC (440 V max in multi-phase or single-phase operation), 50/60 Hz, and 60 V DC (72 V max). The DC rating of 15 kA per IEC 60947-2 is the figure to use when protecting DC circuits — never assume the AC rating carries over. Mounting position is unrestricted, so vertical or horizontal busbar arrangements both work. The IP20 rating applies only with conductors connected — the terminals are live when open, so the panel door must be interlocked or tool-accessed. Halogen-free and silicon-free construction avoids corrosive off-gassing in a confined enclosure. The 5SY6404-7 carries approvals to IEC / EN 60898-1, IEC / EN 60947-2, and UL 1077 / CSA C22.2 No. 235. The UL 1077 rating is 5 kA — that is the supplementary-protector rating for North American panels where the breaker is not the sole branch-circuit overcurrent device. The IEC 60947-2 rating of 30 kA is the industrial circuit-breaker rating for global installations. Expect the manufacturer to supply a Declaration of Conformity covering the Low Voltage Directive and RoHS/REACH compliance as standard documentation with each shipment.","metaTitle":"Siemens SENTRON 5SY6404-7 MCB, 4P C-curve, 6kA/30kA","metaDescription":"Siemens SENTRON 5SY6404-7 4-pole miniature circuit breaker, C-curve, 6 kA (EN 60898) / 30 kA (IEC 60947-2) breaking capacity. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY6404-7","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 6kA, 4-pole, C, 4A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","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":"4","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"6 kA","according to IEC 60947-2 rated value":"30 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":"1.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5feed023732306a70816e7bdf8c70d34.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=327620&mlfb=5SY6404-7"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY6404-7?","answer":"Submit an RFQ against this order code. Availability and current pricing are confirmed at quote time through our independent distribution network — no automated stock figure here, but we source to order and quote firm."},{"question":"Will 5SY6404-7 drop into a panel specified around 5SY4140-7 without rewiring?","answer":"Both are 4-pole SENTRON MCBs with the same 72 mm width (4 modular units) and DIN-rail mounting. The 5SY4140-7 is a B-curve variant; the 5SY6404-7 is C-curve. The footprint and terminal layout are identical — no rewiring needed if the B-curve was over-specified and a C-curve is acceptable for the load. Verify the tripping characteristic against your load inrush before swapping."},{"question":"What compliance documentation does this brand provide for 5SY6404-7?","answer":"The manufacturer provides a Declaration of Conformity covering IEC/EN 60898-1 and IEC/EN 60947-2, plus UL 1077 / CSA C22.2 No. 235 recognition. RoHS and REACH compliance declarations are standard. Request them with your order if your quality system requires them on file."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6404-7","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/5SY6404-7 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}}