{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4105-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4105-7","canonicalUrl":"https://aoctrl.com/siemens/5SY4105-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4105-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4105-7, 1-pole miniature circuit breaker, C characteristic, 10 kA (EN 60898), 400 V AC, 18 mm width, IP20.","salesMarkdown":"## What it is and what it does The Siemens 5SY4105-7 is a 1-pole miniature circuit breaker from the SENTRON family, designed for branch-circuit protection in industrial control panels. Its C tripping characteristic handles moderate inrush currents — common for motor starters, contactor coils, and small transformers — without nuisance tripping, while still clearing faults fast. Rated 10 kA breaking capacity per EN 60898 at 400 V AC, and 35 kA per IEC 60947-2, it covers most panelboard and distribution board fault levels in European 400 V networks. ## Key ratings — what they mean for fit The 10 kA rating under EN 60898 is the standard for domestic and light commercial final circuits; the 35 kA under IEC 60947-2 gives you headroom for industrial panel short-circuit capacity. At DC, it's rated 15 kA per IEC 60947-2, so it also works in DC auxiliary circuits. The 5 kA per UL 1077 means it's recognized as a supplementary protector for North American panels — not a branch-circuit breaker per UL 489, but fine for internal equipment protection. The 18 mm width (1 modular unit) snaps onto standard DIN rail. Pollution degree 3 and overvoltage category III suit fixed installations in industrial environments where conductive dust and transient surges are expected. The IP20 rating with connected conductors is typical for enclosed panel mount — no special sealing needed inside a cabinet. ## Panel integration notes Mounts in any position on 35 mm DIN rail. The quick-assembly system means it clips in without tools and the combined terminal top and bottom accept busbars or ring-tongue lugs. Installation depth is 70 mm behind the panel face, leaving clearance for wiring. The sealable design lets you lock the toggle position after commissioning to prevent unauthorized switching.","metaTitle":"5SY4105-7 SENTRON MCB, 1P C-curve, 10 kA, 400 V","metaDescription":"Siemens 5SY4105-7 SENTRON miniature circuit breaker, 1-pole, C characteristic, 10 kA per EN 60898, 400 V AC. Active production. Sourced to order. Request quote.","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":"5SY4105-7","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 10kA, 1-pole, C, 0.5A, 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","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","Energy Limitation Class":"3","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":"C","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"35 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","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":"0.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$66.95","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a8c95a79ae162a2d5da58b8f5efe553a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=434190&mlfb=5SY4105-7"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4105-7?","answer":"10 kA per EN 60898 at 400 V AC, 35 kA per IEC 60947-2 at 400 V AC, and 15 kA DC per IEC 60947-2. For UL 1077 applications it's rated 5 kA."},{"question":"What compliance documentation does the 5SY4105-7 carry?","answer":"It is certified to IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077/CSA C22.2 No. 235. The materials are halogen-free and silicon-free. RoHS and REACH declarations are standard with the brand's documentation package."},{"question":"How do I get current pricing and availability for 5SY4105-7?","answer":"Submit an RFQ through this listing. We source it to order from independent distribution; availability and the current price are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4105-7","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/5SY4105-7 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}}