{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4201-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4201-7","canonicalUrl":"https://aoctrl.com/siemens/5SY4201-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4201-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4201-7, 2-pole miniature circuit breaker, C-curve trip characteristic, 10 kA breaking capacity per IEC 60898-1, 35 kA per IEC 60947-2, 400 V AC rated voltage.","salesMarkdown":"Its C-curve tripping characteristic handles moderate inrush currents from motor starters and transformer banks without nuisance trips — the standard choice for general-purpose industrial branch circuits where the load isn't purely resistive. Breaking capacity is 10 kA per IEC 60898-1 and 35 kA per IEC 60947-2, with 15 kA at DC per IEC 60947-2. At DC, the 15 kA rating covers 60 V up to 72 V max — relevant for control circuits and battery-backed buswork. The 2-pole design switches both line conductors simultaneously, with no neutral conductor switching. That makes it a straight fit for single-phase 2-wire circuits or two legs of a 3-phase system where you need coordinated overcurrent protection on both poles. ## Certification and deployment context Dual-certified to IEC/EN 60898-1 and IEC/EN 60947-2 plus UL 1077. The UL 1077 listing (5 kA at AC,) qualifies it for North American supplementary protection applications — not as a branch-circuit main, but as component protection inside listed industrial control panels. Occupies 2 modular width units at 36 mm wide. Depth is 76 mm with 70 mm installation depth — check gland plate clearance if the panel is shallow. Current production. The 5SY4201-7 is an active catalog item in the SENTRON family, not subject to phase-out or last-time-buy.","metaTitle":"Siemens 5SY4201-7 SENTRON MCB, 2P C-curve, 10 kA IEC","metaDescription":"Siemens 5SY4201-7 SENTRON 2-pole miniature circuit breaker, C-curve, 10 kA per IEC 60898-1, 35 kA per IEC 60947-2. 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","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","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":"60 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":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"35 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","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":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","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","supply voltage with single-phase operation at AC rated value":"230 V","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$18.40","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=186667&mlfb=5SY4201-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4201-7/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SY4201-7 and get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"Will the 5SY4201-7 drop into a panel specified around the 5SY4304-7CV without rewiring?","answer":"Both are 2-pole SENTRON MCBs with the same 36 mm width and DIN-rail mounting, so the mechanical footprint is identical. The 5SY4304-7CV carries a higher current rating; verify the ampacity matches your circuit before swapping. No wiring changes needed for the same pole count."},{"question":"What compliance documentation does Siemens provide for the 5SY4201-7?","answer":"The breaker is halogen-free and silicon-free. It carries IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077 certifications. RoHS and REACH declarations are standard Siemens documentation available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4201-7","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/5SY4201-7 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}}