If you are sourcing isolator switches, disconnect switches, or switch disconnectors for panel building, OEM equipment, or industrial installations, you have almost certainly encountered two standard numbers: IEC 60947-3 and EN 60947-3. They look similar. They are often used interchangeably on product data sheets. But if you are buying for the European market, or sourcing […]
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IntroductionSwitching to home solar isn’t just about cutting bills—it’s about safety, reliability, and effortless control. For families embracing clean energy, Konrak’s PV combiner boxes deliver peace of mind by solving core challenges in residential solar systems. ⚡ The Home Energy Challenge Residential solar faces unique risks: 🛡️ Our Solution: Household-Optimized Combiner Boxes Konrak’s combiner boxes act as the “safety hub” between your […]
IntroductionDahlander Motor Switches are essential for controlling dual-speed, pole-changing motors in industrial machinery, HVAC systems, and conveyor belts. Choosing the correct switch ensures efficiency, safety, and longevity. In this guide, we’ll break down key selection criteria, supported by technical diagrams and expert resources. 1. Understanding Dahlander Motor Switches Dahlander switches enable 2-speed operation (e.g., High/Low) by reconfiguring […]
IntroductionIn utility-scale solar projects, efficiently managing power from thousands of panels isn’t just about energy yield—it’s about safety, reliability, and smart operations. At Konrak, we engineer PV combiner boxes that solve these core challenges for megawatt-class installations. The Problem: Scaling Solar Safely Large solar farms (1MW+) face unique hurdles: Our Solution: Intelligent PV Combiner Boxes Konrak’s combiner boxes […]




