{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY1708-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY1708-2","canonicalUrl":"https://aoctrl.com/siemens/5SY1708-2","factsUrl":"https://aoctrl.com/api/mcp/products/5SY1708-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY1708-2, device circuit breaker 1-pole with auxiliary switch NO contact, Characteristic F1, 8 A, 230 V AC 50/60 Hz, 60 V DC, Icn 3 kA AC per IEC 60934, UL1077.","salesMarkdown":"The Siemens 5SY1708-2 is a 1-pole device circuit breaker with an integrated auxiliary switch (normally open contact), part of the SENTRON range. It carries an F1 tripping characteristic rated at 8 A, designed for AC operation at 230 V (50/60 Hz) and DC operation at 60 V, with a breaking capacity of 3 kA AC per IEC 60934. The F1 characteristic is a fast-acting curve with a defined short-circuit threshold — it sits between standard B and C curves in speed, intended for protecting sensitive semiconductor loads or control circuits where you need to clear a fault before the silicon lets go. The 1P+AS pole design means the auxiliary switch shares the same 18 mm width as the main pole, so it fits in a single modular unit on the DIN rail. Mounting position is horizontal or vertical, and the IP20 finger-safe housing is standard for enclosed panel use. Rated under IEC / DIN EN 60934 (equipment circuit breakers) and UL1077 (supplementary protectors), so it is accepted in both IEC and North American panels as a supplementary overcurrent device. Vibration resistance per IEC 60068-2-6 is confirmed.","metaTitle":"Siemens 5SY1708-2 SENTRON Device Circuit Breaker, 1P+AS, F1","metaDescription":"Siemens 5SY1708-2 SENTRON device protection switch, 1-pole with auxiliary switch, characteristic F1, 8A, 230V AC / 60V DC. Active production, sourced to order. IEC 60934, UL1077.","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":"5SY1708-2","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 8A 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":"2.37 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/349beafc731deb91ca8ff6bb996a095d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=802789&mlfb=5SY1708-2"},"ai":{"faq":[{"question":"What compliance documentation does this brand provide for 5SY1708-2 (RoHS, REACH, UL, IEC)?","answer":"The 5SY1708-2 is certified to IEC / DIN EN 60934 and UL1077. It is halogen-free and silicon-free. Standard Siemens compliance documentation (RoHS, REACH) is available through the product support portal."},{"question":"Will 5SY1708-2 drop into a panel that was specified around 5SY4116-7CV without rewiring?","answer":"Both are 1-pole SENTRON device breakers on the same 18 mm modular DIN-rail footprint, so mechanical fit is identical. However, the 5SY1708-2 has an integrated auxiliary switch (1P+AS) while the 5SY4116-7CV may not — check whether the panel wiring expects that auxiliary contact before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY1708-2","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/5SY1708-2 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}}