Feature:1. Excellent Insulation: The regulators are well insulated to maintain high reliability in harsh environmental conditions and high vibration levels.2. Applicable Model: This automatic voltage stabilizer is suitable for Marelli generators, and its steady state voltage regulation rate is 0.5%, which is very practical.3. Voltage Build Up: When the remanence is greater than 4V 25Hz, the voltage regulator board will automatically build up the voltage.4. ABS Housing: ABS has good wear resistance and is not easy to scratch and wear, which ensures the service life of the voltage stabilizer.5. Common Accessories: This voltage regulator board is one of the common accessories for generators, it can regulate the voltage quickly and stably.Specification:Item Type: Automatic Voltage RegulatorMaterial: ABSModel: M40FA640AVoltage Build Up: When the remanence is greater than 4V 25Hz, the voltage will be built automaticallyInput Power: Voltage 150-278V 50, 60HzInduction Detection: AC170-270V, 380-415V, 440-480V single phase or 3 phase, 50, 60HzSteady State Pressure Regulation Rate: 0.5% (within 4% engine speed variation range)Working Temperature: -30-70Application: Suitable for Marelli generators.Package List:1 x Automatic Voltage Regulator1 x Instruction