Protective 72V to 24V DC buck converter module with builtin protections for overcurrent, overvoltage, overheating, and short circuit. It safeguards connected equipment and maintains a stable 24V output for buck voltage regulator systems. Automatic protection cutoff: if the protected circuit operates outside safe values, the builtin protector automatically cuts off power. Normal operation resumes automatically when the values to the safe range, reducing risk of damage and downtime. Protective buck module with organic silicone potting technology: the module is water proof, dust proof, and shockproof, suitable for use in harsh environments and challenging installation conditions. efficiency and fast response: up to 96% conversion efficiency, enabling fast transmission and efficient power delivery across varied buck and stabilization scenarios. Compatibility and application focus: designed for use with various buck voltage regulator equipment, delivering 72V input and 24V output in applications requiring reliable protection and stable performance. Use scenarios: Industrial automation and robotics: provides a safe, stable 24V rail from a 72V supply to controllers and sensors with protection against faults. Outdoor or harsh environment installations: solar or telecom setups that require a rugged 24V supply from a 72V source with moisture, dust, and impact resistance. Mobile or industrial equipment: equipment operating in rough conditions (vibration, exposure to dust or water) that benefits from automated protection and efficiency buck conversion.