{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5204-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5204-6","canonicalUrl":"https://aoctrl.com/siemens/5SY5204-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5204-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5204-6 miniature circuit breaker, 2-pole, B-curve, 10 kA breaking capacity per EN 60898, AC/DC rated 400 V AC / 440 V DC, halogen-free, silicon-free, IP20.","salesMarkdown":"## B-curve trip characteristic and breaking capacity The Siemens 5SY5204-6 is a 2-pole miniature circuit breaker from the SENTRON series, with a B-curve tripping characteristic that trips between 3 and 5 times rated current — suited for resistive and general-purpose loads where inrush is low, such as lighting, control transformers, and small motor circuits. Its breaking capacity is 10 kA per EN 60898 and 15 kA per IEC 60947-2 at DC, giving it headroom for fault currents typical in industrial panel distribution. ## AC/DC voltage rating and dual-standard certification Rated for both AC and DC operation — 400 V AC (multi-phase) and 440 V DC — with a maximum DC operating voltage of 500 V. It carries dual certification to IEC/EN 60898-2 and UL1077, so it qualifies for both IEC-based distribution panels and UL-recognized branch-circuit protection in the same footprint. Depth is 76 mm (70 mm installation depth).","metaTitle":"Siemens 5SY5204-6 SENTRON MCB, 2-Pole, B-Curve, 10 kA","metaDescription":"Siemens 5SY5204-6 SENTRON miniature circuit breaker, 2-pole, B-curve, 10 kA per EN 60898, AC/DC rated, halogen-free, IP20. Current production — sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY5204-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-2, UL1077","description":"MCB 440V DC 400V AC 10kA, 2-pole, B, 4A T=70mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"440 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":"universal current","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"B","at DC according to EN 60898-2":"10 kA","according to EN 60898 rated value":"10 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/DC","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":"500 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","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","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/864b1d212c503088817f9f0b859c82d8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1385698&mlfb=5SY5204-6"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY5204-6?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time through our independent distribution network."},{"question":"Will 5SY5204-6 drop into a panel that was specified around 5SY5202-6 without rewiring?","answer":"Yes — both are 2-pole SENTRON MCBs in the same 36 mm width, same DIN-rail mounting, same terminal layout. The difference is the tripping characteristic: 5SY5202-6 is a B-curve variant at a different current rating; the mechanical fit is identical."},{"question":"What compliance documentation does Siemens provide for 5SY5204-6?","answer":"The breaker carries IEC/EN 60898-2 and UL1077 certifications. The halogen-free and silicon-free declarations are part of the product specification. Full compliance documentation (RoHS, REACH, CE) is available on request with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5204-6","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/5SY5204-6 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}}