{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY1705-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY1705-2","canonicalUrl":"https://aoctrl.com/siemens/5SY1705-2","factsUrl":"https://aoctrl.com/api/mcp/products/5SY1705-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY1705-2, 1-pole device protection switch with auxiliary switch NO contact, F1 characteristic, 0.5 A, 230 V AC 50/60 Hz, 60 V DC, Icn 3 kA AC per IEC 60934, UL1077.","salesMarkdown":"## What the F1 curve and 0.5 A rating mean for your panel The Siemens 5SY1705-2 is a 1-pole device protection switch from the SENTRON family, carrying an F1 tripping characteristic and a 0.5 A rated current. The F1 curve is a fast-acting characteristic — it trips within 0.1 s at about 2.5× to 5× rated current — designed for semiconductor protection or sensitive electronic loads where standard B/C curves would allow too much energy through. At 0.5 A, this breaker protects a single branch drawing up to 115 VA at 230 V AC or 30 W at 60 V DC. Rated for both AC and DC operation — 230 V AC (single-phase, up to 250 V max) and 60 V DC (up to 72 V max) — with a breaking capacity of 3 kA AC per IEC 60934. It also carries UL1077 recognition as a supplementary protector, meaning it's accepted for use in UL 508A industrial control panels downstream of a branch-circuit protective device. The built-in auxiliary switch (NO contact) signals the breaker's status — open or closed — to a PLC or indicator lamp without needing a separate auxiliary block. That saves a DIN-rail slot and wiring time on panels where status feedback is required. Horizontal or vertical orientation is permitted; the breaker operates correctly in both positions. Sealable with a lead or tag to prevent unauthorized switching. Supply cord can enter from any direction — top, bottom, or side — giving flexibility in tight enclosures. No combined neutral terminal and no neutral conductor switching; this is a single-pole line breaker only. Rated for ambient temperatures from -40 °C to +70 °C, with derating required above 30 °C at 85% relative humidity and above 60 °C at 20% relative humidity. The F1 characteristic's thermal-magnetic trip is calibrated at 30 °C; expect the magnetic trip threshold to shift slightly at temperature extremes — account for this in coordination studies. Overvoltage category III (distribution level) and pollution degree 2 (normal factory/office environment). Vibration resistance tested per IEC 60068-2-6, so it holds up on machine-mounted panels.","metaTitle":"Siemens 5SY1705-2 SENTRON Device Circuit Breaker, F1 0.5A","metaDescription":"Siemens 5SY1705-2 SENTRON 1-pole device protection switch, F1 characteristic, 0.5 A, 230 V AC / 60 V DC. IEC 60934 / UL1077. Active. Quoted to order.","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":"5SY1705-2","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 0.5A 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 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c3d744867ed6bca399ed1890cb90d914.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=802785&mlfb=5SY1705-2"},"ai":{"faq":[{"question":"What standards does 5SY1705-2 comply with?","answer":"It complies with IEC / DIN EN 60934 (equipment circuit breaker) and UL1077 (supplementary protector). It is halogen-free and silicon-free. The manufacturer provides RoHS and REACH declarations on request."},{"question":"What is the depth of 5SY1705-2?","answer":"The overall depth is 76 mm; the installation depth behind the panel face is 70 mm."},{"question":"What is the width of 5SY1705-2?","answer":"The width is 18 mm, which is 1 modular width unit (1 MW) on a standard DIN-rail panel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY1705-2","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/5SY1705-2 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}}