{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY3204-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY3204-7","canonicalUrl":"https://aoctrl.com/siemens/5SY3204-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY3204-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY3 5SY3204-7 miniature circuit breaker, 2-pole, C tripping characteristic, 4 A rated current, 4.5 kA breaking capacity per EN 60898, 6 kA per IEC 60947-2, 400 V AC, 72 V DC.","salesMarkdown":"It is built for 400 V AC circuits and carries a 4.5 kA breaking capacity per EN 60898, with a 6 kA rating per IEC 60947-2 — the higher figure is the one that governs SCCR coordination in an industrial panel. The C-curve (tripping characteristic class C) means the breaker holds through 5–10× In for short-duration inrush — typical for motor-starter or transformer primary protection where the magnetizing surge would nuisance-trip a B-curve. The 4 A rating is the continuous thermal current at 400 V AC; for DC circuits the maximum rated voltage drops to 72 V, with a DC breaking capacity of 15 kA per IEC 60947-2, so it handles battery banks or DC bus feeds within that voltage ceiling. For North American panels, the UL 1077 / CSA C22.2 No. 235 listing gives it a 5 kA interrupting rating at 400 V AC — the same breaker, different standard. That 5 kA figure is what the local code inspector checks when the panel label references UL 508A. The installation depth is 70 mm (76 mm overall depth), so it clears most standard enclosure back-panels. Ambient temperature range is -40 °C to 75 °C, with derating for humidity: max 95% RH up to 55 °C, tapering to 35% RH at 75 °C. Sealable (padlockable toggle) and touch-protected per the product feature.","metaTitle":"Siemens 5SY3204-7 SENTRON MCB, 2P C-4A, 4.5 kA","metaDescription":"Siemens SENTRON 5SY3204-7 miniature circuit breaker, 2-pole, C-curve, 4 A, 4.5 kA (EN 60898), 6 kA (IEC 60947-2). Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50/60 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Degree of pollution":"3","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Energy limiting class":"3","Number of width units":"2","Number of poles / Note":"2P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY3","Current / at AC / rated value":"4 A","Tripping characteristic class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"4.5 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"6 kA","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","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=66477&mlfb=5SY3204-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY3204-7/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 5SY3204-7?","answer":"Within the same SENTRON family, the 5SY3132-6 is a 2-pole C-curve breaker but at a different current rating — verify the ampacity before substitution. The 5SY3204-7 is the 4 A variant; the 5SY3132-6 carries a different rating and may not share the same breaking capacity or terminal design. For a direct drop-in on an existing panel, stick with the order code on the BOM unless you have confirmed the coordination study."},{"question":"Where can I buy the 5SY3204-7 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send the order code and target quantity for a firm commercial response."},{"question":"What compliance documentation does Siemens provide for 5SY3204-7?","answer":"The breaker carries approvals per EN 60898, IEC 60947-2, UL 1077, and CSA C22.2 No. 235. It is halogen-free and silicon-free. Standard Siemens documentation includes the declaration of conformity (CE), RoHS, and REACH compliance statements — request these with the RFQ if your quality system requires them on file."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY3204-7","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/5SY3204-7 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}