30 Amp Variable Autotransformer - 100VAC Output & 110VAC @ 60Hz Input, Bench top, lab or Industrial Grade, autotransformer, high Powered, Precisely Controlled ac Voltage

I got what I expected based on a prior critical review of this product, so I was not surprised or disappointed with what I received. I did not expect a 30A capable variac, and indeed it certainly was not, based on my own evaluation. I was simply happy to see it arrive in good condition given its weight.I removed the meter/terminal box from the unit in order to inspect terminal connections [since it has already been reported that they melt with high current use]. Sure enough, the nut holding one of the variac output leads onto the output terminal was stripped, obviously this will get hot real fast at high output current. Apparently the final assembly technician responded to the stripped threads by lightly tightening the nuts on remaining three terminals [obviously these would get very hot as well]. You simply cannot adequately torque the terminal nuts on the back of these cheap connectors without either stripping the threads or breaking the ABS plastic spacer used in its construction. I wouldn't rate these terminals at more than 5 to 10 Amps, continuous. The on/off switch is certainly not capable of 30A continuous operation, and the supplied fuse is only 25A! How then can you honestly rate this as 30A variac? A suggestion, throw out that useless analog output voltage meter and put that money into upgrades of the power switch and I/O terminals. Like the fellow in a prior review had suggested, I replaced the power switch and I/O terminals in order to support at least 20A continuous current. Even with these additional costs, I believe this 20A Variac is a good bargain.

Poorly made, mine does not work at all. I would think twice before buying this thing.

It was exactly what I was looking for and it preforms admirably I would recommend it to anyone who is doing the kind of research that I am in.

Works great! I use this to control my heat elements on my mash ton.

My son wanted this transformer for his guitar amps for Christmas. After researching a company about it, I found this on Amazon at a great price. Other sites had a transformer with much less amps and a meter for 5 - 6 times more money.

Just what I needed at a good price.

I have 18 of these units that I use in my test lab that see fairly continuous load.While the variac itself is good, the electrical components aren't rated for continuous load of 18 amps or more. The fuse holder and switch are rated for 10A at best. I've had quite a number of the switches and fuse holders melt down on me. Also the fuse is on the input side when it should be on the output side.When I get these units in, I'll typically bypass the switch and fuse, then install a 20a circuit breaker on the output side. I'll also find that the nuts on the back side of the terminals aren't very tight so I'll have to snug them up. Don't snug em up too tight though or you'll break them. I've had a couple of terminals melt down on me as well.Once you can bypass these design/build flaws the units hold up pretty good to continuous load .