{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY1704-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY1704-2","canonicalUrl":"https://aoctrl.com/siemens/5SY1704-2","factsUrl":"https://aoctrl.com/api/mcp/products/5SY1704-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY1704-2, device protection switch, 1-pole with auxiliary switch NO contact, characteristic F1, 4 A, 230 V AC 50/60 Hz, 60 V DC, Icn 3 kA AC per IEC 60934, IP20, DIN-rail mount.","salesMarkdown":"The Siemens 5SY1704-2 is a SENTRON device protection switch — a 1-pole unit with an integrated auxiliary normally-open contact, rated 4 A with F1 tripping characteristic. It interrupts fault currents up to 3 kA AC per IEC 60934 and carries UL1077 recognition, so it qualifies for both IEC and North American panel builds. The auxiliary switch signals the breaker's state without needing a separate contact block, saving one modular width on the DIN rail. The F1 characteristic trips magnetically on short-circuit. The 4 A rating governs the continuous load; at 230 V AC single-phase the switch is rated for 250 V maximum, and at DC it handles 60 V nominal (72 V max). Mounting is standard DIN-rail snap-on, one modular unit wide (18 mm). The part can be mounted horizontally or vertically, and the supply cord position is unrestricted — no fixed line/load orientation. IP20 finger-safe protection is sufficient for enclosed panels; the sealable option (yes) allows locking the toggle to prevent unauthorized reset. ## Deployment context This device protection switch is designed for control-circuit protection in industrial panels — think PLC power supplies, contactor coils, solenoid valves, or small transformer primaries where the F1 curve matches the inrush profile. The halogen-free and silicon-free construction is relevant for clean-room or automotive paint-line environments where outgassing contaminants can't be tolerated. Vibration resistance per IEC 60068-2-6 means it holds up on machine-mounted subpanels near motors or presses.","metaTitle":"Siemens 5SY1704-2 SENTRON Device Protection Switch, 4A F1, 1","metaDescription":"Siemens 5SY1704-2 SENTRON device protection switch, 1-pole with auxiliary NO contact, 4A, characteristic F1, 230V AC/60V DC, 3kA Icn. Active production. Order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SY1704-2","Height":"90 mm","Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / DIN EN 60934, UL1077","description":"Device circuit breaker 1-pole with auxiliary switch NO contact Characteristic F1 4A 230 V AC 50/60 Hz 60 V DC Icn 3 kA AC according to IEC 60934","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+AS","Number Of Poles":"1","lifecycle_stage":"current","Fastening Method":"DIN rail","Mounting Position":"Horizontal/vertical","at AC rated value":"230 V","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Device protection switch","protection class IP":"IP20","Overvoltage Category":"III","Combined Terminal Top":"No","Combined Terminal Bottom":"No","Neutral Conductor Switching":"No","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"F1","Influence Of The Surrounding Temperature":"30 °C @ 85%rF; 60 °C @ 20%rF\"","Type Of Voltage Of The Operating Voltage":"AC/DC","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with single-phase operation at AC rated value":"250 V","vibration resistance according to IEC 60068-2-6":"Yes","Mechanical Service Life (Operating Cycles) Typical":"6 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"2.24 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/062886e16ddbb5df9513bd6ee11be393.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=802783&mlfb=5SY1704-2"},"ai":{"faq":[{"question":"What are the key voltage and current ratings for 5SY1704-2?","answer":"Rated 4 A with F1 characteristic, 230 V AC (250 V max single-phase), 60 V DC (72 V max), interrupting capacity 3 kA AC per IEC 60934."},{"question":"What compliance standards does 5SY1704-2 meet?","answer":"Designed to IEC / DIN EN 60934 and UL1077, with IP20 finger-safe protection, vibration resistance per IEC 60068-2-6, and halogen-free / silicon-free construction."},{"question":"Will 5SY1704-2 drop into a panel specified around 5SY4116-7CV?","answer":"Both are 1-pole SENTRON device protection switches on a single modular-width DIN-rail footprint, so the mechanical fit is identical. The difference is the rating and characteristic — verify the current and trip curve match your branch circuit before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY1704-2","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/5SY1704-2 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}}