{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5404-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5404-7","canonicalUrl":"https://aoctrl.com/siemens/5SY5404-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5404-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5404-7 miniature circuit breaker, 4-pole, C-curve, 4 A at 35 °C, 10 kA per EN 60898, rated 880 VDC, sealable, halogen-free.","salesMarkdown":"## Siemens SENTRON 5SY5404-7 — 4-pole C-curve MCB, 4 A, 10 kA, 880 VDC The Siemens SENTRON 5SY5404-7 is a 4-pole miniature circuit breaker with C-curve tripping characteristic, rated 4 A at 35 °C and breaking 10 kA per EN 60898. It carries an 880 VDC rating per EN 60898-2, making it suitable for DC circuits up to that voltage. The universal-current design (AC/DC) and pollution degree 2 rating fit standard commercial and industrial panel environments. The C-curve (tripping characteristic class C) means the breaker holds up to 5–10× rated current for short durations, so it tolerates motor inrush and capacitive loads without nuisance tripping — common for general-purpose distribution and mixed loads. At 35 °C the breaker is rated 4 A; at 40 °C it derates to 3.76 A, at 50 °C to 3.5 A, and at 60 °C to 3.22 A. EN 60898 is the standard for household and similar installations; for industrial panels with higher prospective fault current, verify coordination with the upstream device. Rated 880 VDC, this 4-pole breaker can be used in DC circuits — for example, in photovoltaic combiner boxes or DC bus distribution — as long as the polarity is observed (AC as required, observe DC polarity per the evidence). The 4-pole configuration (4P) switches all four poles simultaneously, giving full isolation on three-phase plus neutral or on a 4-wire DC system. Touch protection is built in — no exposed live parts when wired.","metaTitle":"Siemens 5SY5404-7 SENTRON MCB, 4P C 4A, 10 kA, 880 VDC","metaDescription":"Siemens SENTRON 5SY5404-7 miniature circuit breaker, 4-pole, C-curve, 4 A at 35 °C, 10 kA breaking capacity per EN 60898, rated 880 VDC. Sealable, halogen-free. Available to order.","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":"5SY5404-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker Universal current 880 V DC 400 V AC 10kA, 4-pole, C, 4 A max. 1000 V DC","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","Type Of Voltage":"AC/DC","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"4 A","at DC / rated value":"880 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"II","Combined Terminal Top":"Yes","Number Of Poles / Note":"4P","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 35 °C / rated value":"4 A","at 40 °C / rated value":"3.76 A","at 45 °C / rated value":"3.63 A","at 50 °C / rated value":"3.5 A","at 55 °C / rated value":"3.36 A","at 60 °C / rated value":"3.22 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"universal current","at DC / acc. to EN 60898-2":"10 kA","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"AC as required, observe DC polarity","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","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":"1 000 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/942b67fb26c102def8ceb3bb89d36480.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=508116&mlfb=5SY5404-7"},"ai":{"faq":[{"question":"What is 5SY5404-7's listed depth (76 mm) on this component line?","answer":"The overall depth is 76 mm, with an installation depth of 70 mm."},{"question":"What is 5SY5404-7's listed width (72 mm) on this component line?","answer":"The width is 72 mm, which corresponds to 4 modular width units on a DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5404-7","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/5SY5404-7 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}}