{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7404-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7404-7","canonicalUrl":"https://aoctrl.com/siemens/5SY7404-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7404-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7404-7, 4-pole miniature circuit breaker, C-curve, 4 A rated current, 400 V AC, breaking capacity 15 kA per EN 60898 / 40 kA per IEC 60947-2.","salesMarkdown":"## Siemens 5SY7404-7 — 4-pole C-curve MCB for 400 V AC panels It protects 400 V AC circuits in industrial control panels, mechanical engineering equipment, and distribution boards where the inrush of motor starters or transformer banks would nuisance-trip a B-curve device. The C-curve holds through 5–10× rated current before instantaneous trip, so it clears short-circuits without dropping loads during normal inductive starts. Breaking capacity is 15 kA per EN 60898 and 40 kA per IEC 60947-2, with a DC rating of 15 kA per IEC 60947-2. For UL 1077 / CSA C22.2 No. 235 installations the interrupting rating is 5 kA. That spread covers most panel SCCR requirements in Europe and North America — the 40 kA IEC figure gives headroom for high-fault utility feeds without cascading an upstream fuse. Operating temperature range spans -40 °C to 75 °C, with humidity derating: max 95 % RH at 55 °C, 55 % at 70 °C, 35 % at 75 °C. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. The part carries the SENTRON brand designation and is classified per IEC 81346-2 and DIN EN 61346-2 as function F.","metaTitle":"Siemens 5SY7404-7 SENTRON MCB, 4P C-4A, 15/40 kA","metaDescription":"Siemens 5SY7404-7 SENTRON miniature circuit breaker, 4-pole, C-curve, 4 A, 400 V AC. Breaking capacity 15 kA (EN 60898) / 40 kA (IEC 60947-2). Current lifecycle stage. Sourced to o","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":"5SY7404-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 15kA, 4-pole, C, 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":"4P","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","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","operational current / at AC / rated value":"4 A","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":"No","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 (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/74b64a939bea117300ee141e8ca39298.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=288751&mlfb=5SY7404-7"},"ai":{"faq":[{"question":"Where can I buy 5SY7404-7 and get a price?","answer":"The part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What is the breaking capacity of 5SY7404-7?","answer":"15 kA per EN 60898, 40 kA per IEC 60947-2 at 400 V AC, and 15 kA DC per IEC 60947-2. For UL 1077 / CSA C22.2 No. 235 the rating is 5 kA."},{"question":"What compliance documentation does Siemens provide for 5SY7404-7?","answer":"The part is rated per EN 60898, IEC 60947-2, UL 1077, and CSA C22.2 No. 235. It is halogen-free and silicon-free, with IP20 protection and pollution degree 3 classification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7404-7","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/5SY7404-7 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}}