Voltage Regulator 4000W High Power AC 220V Thyristor Electronic Volt Governor Thermostat Speed Temperature Regulation Controller Module with Insurance Shell for Electric Furnace Water Heater LED LightFeature:Note that the load must be connected before adjusting the voltage.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 cover on the connector cannot be completely opened due to the installation of the shell. The screwdriver should be turned slightly. In addition, be careful when opening it. Excessive force will easily break the cover. Specification:Item: 4000W AC voltage regulatorThyristor model: BTA41600BSize: length 85*width 55*height 38mm, inner hole of knob 6mm.Maximum power: 4000W (resistive load limit power), the power should be reduced for a long time.Efficiency: more than 90%Working voltage: AC 220VRegulating voltage: AC 10-220VNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement. 1 X Voltage Regulator [relateproductdetail/]