{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5402-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5402-7","canonicalUrl":"https://aoctrl.com/siemens/5SY5402-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5402-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5402-7, 4-pole miniature circuit breaker, 2 A rated current, C tripping characteristic, 10 kA breaking capacity per EN 60898, 880 V DC rated voltage.","salesMarkdown":"Rated 2 A at AC and 880 V at DC, this breaker handles a 4-pole circuit with a single 2 A path per pole. The DC voltage rating of 880 V is unusually high for a 2 A MCB — it lets you protect DC bus circuits in solar combiner boxes or battery banks without needing a higher-current device. The 10 kA breaking capacity at both AC (EN 60898) and DC (EN 60898-2) means it can safely interrupt a fault current up to 10,000 A without welding contacts or cascading failure upstream — critical for selectivity coordination in a distribution board. Temperature derating is built in: at 35 °C the full 2 A is available, but at 50 °C it drops to 1.8 A, and at 60 °C to 1.7 A. Mounting position is any — vertical, horizontal, or upside-down — which simplifies layout in tight panels. The combined terminal at top and bottom accepts both busbar and wire, and the touch-protection feature meets IPXXB requirements for finger-safe wiring.","metaTitle":"Siemens 5SY5402-7 SENTRON MCB, 4P, 2A, C-Curve, 10kA","metaDescription":"Siemens 5SY5402-7 SENTRON miniature circuit breaker, 4-pole, 2 A rated, C tripping characteristic, 10 kA breaking capacity per EN 60898. Current lifecycle stage, 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":"5SY5402-7","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, 2A max. 1000 V DC","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","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":"2 A","at DC / rated value":"880 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"II","Combined Terminal Top":"Yes","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 35 °C / rated value":"2 A","at 40 °C / rated value":"1.9 A","at 45 °C / rated value":"1.85 A","at 50 °C / rated value":"1.8 A","at 55 °C / rated value":"1.75 A","at 60 °C / rated value":"1.7 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","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","Type Of Voltage / Of The Operating Voltage":"AC/DC","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Component / 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 (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ef9b89e3afe3a01576d840bdc4b36d7e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=517216&mlfb=5SY5402-7"},"ai":{"faq":[{"question":"Where can I buy 5SY5402-7 and how do I get a price?","answer":"The 5SY5402-7 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ to get a firm price and lead time."},{"question":"What is 5SY5402-7's breaking capacity?","answer":"It has a 10 kA breaking capacity per EN 60898 at AC and 10 kA per EN 60898-2 at DC."},{"question":"What is the temperature derating for 5SY5402-7?","answer":"At 35 °C it carries the full 2 A; at 50 °C it derates to 1.8 A; at 60 °C to 1.7 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5402-7","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/5SY5402-7 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}}