{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4110-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4110-8","canonicalUrl":"https://aoctrl.com/siemens/5SY4110-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4110-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4110-8, 1-pole miniature circuit breaker, D tripping characteristic, 10 kA breaking capacity per EN 60898, 20 kA per IEC 60947-2, 400 V AC, 18 mm wide.","salesMarkdown":"## What the ratings mean for fit The Siemens 5SY4110-8 is a 1-pole SENTRON miniature circuit breaker with a D tripping characteristic. The D-curve means it tolerates high inrush currents — typically 10 to 20 times the rated current — making it the right choice for motor circuits, transformers, and other inductive loads where the start-up surge would nuisance-trip a B- or C-curve breaker. The 10 kA breaking capacity per EN 60898-1 covers standard residential and light commercial fault levels; the 20 kA rating per IEC 60947-2 gives headroom for industrial panel applications where higher prospective fault currents are expected. For DC circuits, it's rated 15 kA at up to 72 V, so it handles battery-backed control circuits and DC bus protection in the same footprint. The 18 mm width (1 modular unit) snaps onto a standard DIN rail, and the 'any' mounting position means you can orient it vertically or horizontally inside the enclosure without derating — useful when panel space forces unconventional layouts. The IP20 rating with connected conductors is typical for enclosed panel mount; it's not intended for washdown environments. ## Where it fits in the panel The 5SY4110-8 is a SENTRON series device, designed for quick assembly on DIN rail with a combined top and bottom terminal that accepts both busbar and wire — no need for separate feed-through terminals. The 70 mm installation depth leaves room behind the gland plate for wiring. Sealable with a lead seal if the application requires tamper evidence. Halogen-free and silicon-free construction matters for environments where outgassing could contaminate sensitive equipment or coatings. ## Environmental and compliance Rated for ambient temperatures from -40 °C to 75 °C, with humidity derating above 55 °C: max 95% RH at 55 °C, tapering to 35% at 75 °C. That covers most industrial enclosures including unheated warehouses and outdoor cabinets. Vibration resistance per IEC 60068-2-6 (±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz) means it holds up on machinery-mounted panels near conveyors or compressors. The overvoltage category III and pollution degree 3 ratings confirm it's suitable for fixed installations in industrial environments where transient overvoltages are common.","metaTitle":"Siemens 5SY4110-8 SENTRON MCB, 1P, D-Curve, 10 kA","metaDescription":"Siemens 5SY4110-8 SENTRON miniature circuit breaker, 1-pole, D tripping characteristic, 10 kA (EN 60898) / 20 kA (IEC 60947-2). Active production. 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","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":"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":"10 kA","according to IEC 60947-2 rated value":"20 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":"0.9 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$15.07","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=306435&mlfb=5SY4110-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4110-8/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY4110-8 and how do I get a price?","answer":"Sourced and quoted to order through independent distribution. Submit an RFQ for current pricing and availability confirmation."},{"question":"Will 5SY4110-8 drop into a panel specified around 5SY4140-7 without rewiring?","answer":"Both are 1-pole SENTRON MCBs on the same 18 mm DIN-rail footprint with combined terminals, so the mechanical swap is straightforward. The key difference is the tripping characteristic: 5SY4110-8 is D-curve (high inrush), while 5SY4140-7 is a different curve — verify the existing branch's load type before substituting."},{"question":"What compliance documentation does this brand provide for 5SY4110-8?","answer":"The breaker is certified to IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077 / CSA C22.2 No. 235. Halogen-free and silicon-free construction is declared. Standard Siemens SENTRON documentation includes the Declaration of Conformity and the UL/CSA file number."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4110-8","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/5SY4110-8 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}}