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The MLY1-A25-50B lightning surge protector (SPD), a cutting-edge solution designed to protect your electrical system from unpredictable natural disasters.

Date:Aug-02-2025

With the increasing frequency of lightning strikes and transient overvoltages, ensuring the safety and reliability of your power system is critical. Designed for AC 50/60Hz, 380V power systems, the MLY1-A25-50B is ideal for TT, TN, and other configurations. This SPD is particularly suitable for areas with a higher risk of lightning strikes, providing Class B lightning protection to ensure the safe and reliable operation of your power infrastructure.
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The MLY1-A25-50B excels in its rugged design and strict adherence to national standards, including GB50057-2010 and GB 18802.1. This single-port, indoor, fixed-voltage switching surge protector (SPD) boasts impressive specifications, including a high surge current capacity of 30kA and a low residual voltage of only 2.5kV. At the heart of the protector is a multi-stage graphite gap, meticulously designed to ensure optimal performance. The device’s sealed construction not only enhances durability but also ensures a safe distance within the spark gap, effectively preventing arc leakage even under surge currents. This thoughtful design means no additional space is required for arc leakage during installation, making the MLY1-A25-50B a convenient and reliable choice for your surge protection needs.
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The MLY1-A25-50B is simple to install and use. It is designed to mount on a standard 35mm DIN rail, ensuring compatibility with most electrical cabinets. For optimal performance, the connecting wire should be 6-35mm² stranded copper wire, and the grounding wire should be 16mm² or larger, two-color wire, and no longer than 500mm. To further enhance grid reliability, it is recommended that the protector connected to the L wire be installed in series with a fuse or circuit breaker, selected based on the rated current In. With the MLY1-A25-50B lightning surge protector, your electrical system is well protected, allowing you to focus on what truly matters – ensuring smooth and efficient operations.

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Email: mulang@mlele.com