{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7604-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7604-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7604-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7604-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7604-8, 4-pole (3P+N) miniature circuit breaker, D tripping characteristic, rated 4 A at 35 °C, 400 V AC, 50/60 Hz, breaking capacity 15 kA (EN 60898) / 40 kA (IEC 60947-2).","salesMarkdown":"The Siemens 5SY7604-8 is a 4-pole (3P+N) SENTRON miniature circuit breaker with a D tripping characteristic, rated 4 A at 35 °C on a 400 V AC 50/60 Hz system. The 4-pole 3P+N configuration switches three phases and the neutral, common for three-phase distribution boards feeding mixed single- and three-phase loads. ## Temperature derating and ambient limits The 4 A rating holds at 35 °C ambient. Above that, derate linearly: 3.81 A at 40 °C, 3.71 A at 45 °C, 3.61 A at 50 °C, 3.5 A at 55 °C, and 3.39 A at 60 °C. If the panel internal temperature runs near 50 °C — common in a sealed enclosure with drives — the effective continuous current drops to 3.61 A. The operating range spans -40 °C to 75 °C, with humidity limits of 95 % up to 55 °C, 55 % up to 70 °C, and 35 % up to 75 °C. ## Physical integration and compliance Dimensions: 72 mm wide (4 modular units), 90 mm high, 76 mm deep, with an installation depth of 70 mm. Sealable, halogen-free, and silicon-free construction. Compliance documentation includes the manufacturer's declaration per the SENTRON series — RoHS, REACH, and the relevant IEC/EN standards are covered in the standard product documentation.","metaTitle":"Siemens 5SY7604-8 SENTRON MCB, 4-Pole D-Curve 4 A 400 V AC","metaDescription":"Siemens 5SY7604-8 SENTRON miniature circuit breaker, 4-pole 3P+N, D-curve, 4 A at 35 °C, 400 V AC. Breaking capacity 15 kA (EN 60898) / 40 kA (IEC 60947-2). Current production, ava","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":"5SY7604-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 15kA, 3+N-pole, D, 4A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","Type Of Voltage":"AC","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":"400 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"3P+N","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"4 A","at 40 °C / rated value":"3.81 A","at 45 °C / rated value":"3.71 A","at 50 °C / rated value":"3.61 A","at 55 °C / rated value":"3.5 A","at 60 °C / rated value":"3.39 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"D","acc. to EN 60898 / rated value":"15 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"40 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 DC / acc. to IEC 60947-2 / rated value":"15 kA","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 Function / Neutral Conductor Switching":"Yes","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 (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/59e5db4ce4590b8b3bfa0bf5673346e4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=328924&mlfb=5SY7604-8"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY7604-8?","answer":"Submit an RFQ through this listing. Pricing and stock position are confirmed at quote time — we source through independent distribution and quote to order."},{"question":"Will 5SY7604-8 drop into a panel that was specified around 5SY7140-8CC without rewiring?","answer":"Both are 4-module-wide (72 mm) SENTRON MCBs on the same DIN-rail footprint, so the physical swap is a straight pull-and-replace. The deciding factor is the tripping curve and rating: 5SY7604-8 is a D-curve 4 A breaker, while 5SY7140-8CC is a different rating/curve — verify the branch circuit's load and coordination before substituting."},{"question":"What compliance documentation does Siemens provide for 5SY7604-8?","answer":"Standard SENTRON product documentation covers RoHS, REACH, and the applicable IEC/EN standards (EN 60898, IEC 60947-2). The manufacturer's declaration is included with the product."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7604-8","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/5SY7604-8 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}}