Thyristors are mainly used for resistive loads (electric heating filament incandescent lamps, etc.). Most single-phase AC motors are also available, but they are not guaranteed. for other types of loads, please confirm by the buyer. The fuse is not omnipotent and has a response time. If the current is too large, in addition to the fuse, the module may also be burned out.Note that the plastic powder on the connector cannot be completely opened due to the installation of the shell. The screwdriver should be twisted slightly. In addition, be careful when opening it. Excessive force will easily break the shell.The voltage regulator with shell and fuse is safer and easier to install, and is more suitable for families and factories and enterprises that are not convenient to install.Use imported 41A SCR.Using 1.6-thick FR-4 high-temperature-resistant circuit board, the circuit design is reasonable, and the thickened welding circuit design is adopted, even if the large current passes through, it is enough to deal with, and the use is safer and more reliable.The standard 35A 4-position terminal is adopted, so that it is a real 4000W design. (Two in and two out are more convenient for wiring).The circuit has been technically improved many times, and every accessory has been selected, and the technology is now fully mature. The use of double capacitor design (safety capacitor + metal film capacitor) effectively absorbs surges and voltage spikes, more effectively protects the thyristor, and is more efficient and safer.External use 1.5mm thick aluminum plate and stainless steel open die stamping forming, beautiful and generous, more suitable for family temperature control and industrial enterprises Beautiful, safe, convenient, high-quality products, no rust and other appearance problems after long use.Specifications:Product name: 4000W AC voltage regulatorThyristor model: BTA41600BDimensions: length 85 x width 55 x height 38mm, the inner hole of the knob is 6mm.Maximum power: 4000W (resistive load limit power), continuous use of power should be reduced.Efficiency: more than 90%Working voltage: AC 220VRegulating voltage: AC 10-220Vcolour:SilverMaterial:Stainless steel + aluminumPackage Contents:1 x ControllerNote that the load must be connected before adjusting the voltage.Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.