Specifications:Product name: 4000W AC voltage regulatorThyristor model: BTA41600BSize: size 85*width 55*height 38mm, the inside gap of the knob is 6mm power: 4000W (resistive load limit power), the flexibility should be diminished for a long time. The long-term resistive load is usually recommended to be inside 2000: over 90%Working voltage: AC 220VRegulating voltage: AC 0-220V (from high to low could be adjusted to 0, from low to excessive is set 10V)Terminal 12 is attached to the input 220V, and terminal 34 is hooked up to the burden Includes: 1PCNote that the burden needs to be related earlier than voltage legislation are mainly used for resistive plenty (heating wire incandescent lamps, etc.), and most single-phase AC motors also is used, but there isn't any be sure that they are often used for different varieties of loads. Buyers must confirm via means of themselves. The fuse isn't a panacea, there is a reaction time, if the current is simply too large, except burning out the fuse, the module also can burn out.