{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7102-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7102-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7102-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7102-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7102-8, miniature circuit breaker, D-characteristic, 1-pole, 15 kA (EN 60898) / 50 kA (IEC 60947-2), 400 V AC, 18 mm width.","salesMarkdown":"## Siemens 5SY7102-8 — SENTRON D-curve MCB, 1-pole The Siemens 5SY7102-8 is a current-production SENTRON miniature circuit breaker with a D tripping characteristic, designed for one-pole protection in industrial control panels and distribution boards. It carries dual-standard breaking capacities: 15 kA per EN 60898-1 and 50 kA per IEC 60947-2, with a UL 1077 listing at 5 kA — giving you the SCCR headroom to coordinate downstream without cascading upstream. ## What the ratings mean for fit The D-curve (10–20× In magnetic trip) is the right choice for loads with high inrush — motor starters, transformers, solenoid banks — where a B or C curve would nuisance-trip on startup. The 15 kA EN 60898 rating covers residential and light commercial distribution; the 50 kA IEC 60947-2 rating is what matters for industrial panel SCCR calculations. At 400 V AC rated voltage and 60 V DC, this pole handles the common three-phase and control-circuit voltages. The 18 mm width (1 modular unit) means it occupies a single DIN-rail position, so a 12-pole distribution board fits 12 of these without crowding. Rated for pollution degree 3 and overvoltage category III, it is suited for fixed installations inside enclosures where conductive contamination is possible — typical for machine control panels and industrial switchgear. The IP20 rating (with connected conductors) means it is protected against finger contact but not against moisture; mount it inside a cabinet rated for the environment. ## Panel integration and mounting Snap-on mounting to 35 mm DIN rail per EN 60715, any orientation. The quick-assembly system allows ganging multiple poles via the combined top and bottom terminals — no separate busbar required for multi-pole configurations. Installation depth is 70 mm behind the panel surface; overall depth is 76 mm including the front projection. The sealable design (provision for a lead seal or lockout tag) supports lockout/tagout procedures during maintenance. ## Environmental and compliance Halogen-free and silicon-free construction — relevant for clean-room or high-reliability environments where outgassing could contaminate optics or contacts. Operating temperature range -40 °C to +75 °C, with humidity derating above 55 °C (max 95% RH at 55 °C, tapering to 35% at 75 °C). Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. Compliance documentation (RoHS, REACH, UL, IEC) is available from the manufacturer.","metaTitle":"Siemens 5SY7102-8 SENTRON MCB, D-curve, 1-pole, 15/50 kA","metaDescription":"Siemens 5SY7102-8 SENTRON miniature circuit breaker, D tripping characteristic, 1-pole, 15 kA (EN 60898) / 50 kA (IEC 60947-2). Current production. Quoted to order. IP20, 18 mm wid","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":"5SY7102-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","description":"Miniature circuit breaker 230/400 V 15kA, 1-pole, D, 2A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","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","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to EN 60898 rated value":"15 kA","according to IEC 60947-2 rated value":"50 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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6fa17a052e1f8e720fe39f8aace57cb9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=383307&mlfb=5SY7102-8"},"ai":{"faq":[{"question":"Where can I buy 5SY7102-8 and how do I get a price?","answer":"The 5SY7102-8 is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"Will 5SY7102-8 drop into a panel specified around 5SY4101-7CV without rewiring?","answer":"Both are 1-pole SENTRON MCBs on the same 18 mm DIN-rail footprint with identical terminal layout, so mechanical fit is the same. The key difference is the tripping characteristic: 5SY7102-8 is D-curve (high inrush), while 5SY4101-7CV is a different characteristic. Verify the curve matches your load before substituting."},{"question":"What compliance documentation does Siemens provide for 5SY7102-8?","answer":"The 5SY7102-8 carries IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077 certifications. It is halogen-free and silicon-free. RoHS and REACH declarations are available from Siemens."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7102-8","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/5SY7102-8 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}}