High power: The speed controller for 220v motor of the speed regulator peak motor is 4000W, the maximum connection power of the resistive load should not exceed 2000W, the maximum power of the inductive load should not exceed 500W, the maximum power of the capacitive load should not exceed 300W, otherwise the product may be damaged. High-quality materials ... speed regulator is made of thickened flame retardant plastic material, high temperature resistance, flame retardant, rust, high pressure resistance, good durability. Perfect performance: Voltage regulator stepless voltage regulation, zero hysteresis, zero delay, fast response; not applicable to pumps and motors with capacitors or without carbon brushes, which do not support voltage reduction and speed reduction. Multiple protection: The speed regulator is equipped with a multi-purpose socket and a power indicator, with overload protection that effectively protects the high-power thyristor from surges, voltage spikes and RC