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https://www.cirprotec.com/wp-content/uploads/2025/07/WIX-CIRPROTEC-UNE-EN-50550.png1200689The UNE-EN 50550 standard regulates Permanent Overvoltage Protectors, “Power frequency overvoltage protective devices for household and similar applications (POP)”, with the aim of ensuring their quality, safety and reliability. What are Permanent Overvoltages? They are voltage increases of hundreds of volts, lasting for an undefined period of time, caused by phase imbalance. They are usually […]