{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5103-7KK11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5103-7KK11","canonicalUrl":"https://aoctrl.com/siemens/5SY5103-7KK11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5103-7KK11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5103-7KK11 miniature circuit breaker, 1-pole, 3 A rated current, C tripping characteristic, 10 kA breaking capacity per EN 60898, 18 mm width.","salesMarkdown":"The Siemens SENTRON 5SY5103-7KK11 is a 1-pole miniature circuit breaker rated 3 A with a C tripping characteristic, breaking 10 kA per EN 60898. It's designed for universal current operation — AC or DC — making it a straight drop-in for general-purpose branch circuit protection in control panels, distribution boards, and railway auxiliary systems. The 18 mm width (1 modular unit) snaps onto DIN rail, and the quick-assembly fastening means it clicks in without tools. The 3 A rating is at 35 °C ambient. At 40 °C it derates to 2.82 A, at 50 °C to 2.62 A, and at 60 °C to 2.41 A (–). The C-curve trips magnetically at 5–10× rated current, so it's sized for circuits where the connected load draws a brief startup surge under 30 A. The 10 kA breaking capacity at 230/400 V AC is the standard domestic/light-commercial SCCR; for DC circuits it's rated 10 kA per EN 60898-2 at 220 V DC. That DC rating matters if you're protecting a 220 VDC control bus or railway auxiliary supply — most general-purpose MCBs don't carry a published DC kA. ## Panel integration The 18 mm width takes one modular space — useful when filling a crowded sub-distribution board. Combined top and bottom terminals let you feed from either direction without flipping the breaker. The sealable design allows a lock-on tag for lockout/tagout procedures.","metaTitle":"Siemens 5SY5103-7KK11 SENTRON MCB, 3A C-Curve 1P 10kA","metaDescription":"Siemens SENTRON 5SY5103-7KK11 miniature circuit breaker, 3A C-curve, 1-pole, 10kA breaking capacity per EN 60898. Current production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","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","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"3 A","at DC / rated value":"220 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Design Of The Product":"For railway applications","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 35 °C / rated value":"3 A","at 40 °C / rated value":"2.82 A","at 45 °C / rated value":"2.72 A","at 50 °C / rated value":"2.62 A","at 55 °C / rated value":"2.52 A","at 60 °C / rated value":"2.41 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"universal current","at DC / acc. to EN 60898-2":"10 kA","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"AC as required, observe DC polarity","Product Feature / Touch Protection":"Yes","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"15 kA","Type Of Voltage / Of The Operating Voltage":"AC/DC","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"250 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=531351&mlfb=5SY5103-7KK11","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY5103-7KK11/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY5103-7KK11 and how is it quoted?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"Will 5SY5103-7KK11 drop into a panel specified around 5SY4116-7CV?","answer":"Both are 1-pole SENTRON MCBs on the same DIN-rail footprint, so the mechanical fit is identical. The 5SY5103-7KK11 is a 3 A C-curve; the 5SY4116-7CV is a different current rating and characteristic — verify the load side before swapping."},{"question":"What compliance documentation does Siemens provide for 5SY5103-7KK11?","answer":"The breaker carries a railway application design, halogen-free and silicon-free construction, touch protection, IP20 with connected conductors, and pollution degree 3. Standard Siemens declarations for RoHS, REACH, and CE are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5103-7KK11","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/5SY5103-7KK11 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}}