APIELE Changeover Selector Switch 3 Position 440V Universal Rotary Cam Selector (32A 8 Terminal)

Five stars for quality and functionality - ZERO stars for wiring diagram! I had to search the internet for about 2 hours to figure out how to correctly wire it up for my project. Only 5 stars because the switch is heavy duty and well made.

This feels like a quality and durable part. I am using this in my solar setup to switch between charging portable power stations and my shed battery system. The switch has a nice feel and clicks into each postion.

The switch we received worked just fine for our application; using it as a 20A, SP3T transfer switch; mounted to the side of a 3R box, with a WP cover over the exposed knob area. Will I buy it again? Good price, but… The item comes with no instructions at all. When ready to mount the switch to your panel, the first thing everyone has to do is- separate the knob and square subplates from the assembly, by first removing the screw from the knob. Be very careful when you do this, as a very small nut (under 4-40 in size) will most likely fall out and land somewhere in your work area. What is NOT shown or explained anywhere at all is that the main knob is held in place by a screw that threads into a plastic sleeve and that sleeve “squeezes against” the plastic shaft when the knob screw is tightened; holding both the knob & sleeve in place on the shaft. Dropped (vertically) down inside that sleeve is a very small steel nut, that is engaged (and held in place) when the knob screw is tightened. When the screw is taken out, to remove the knob, there is really nothing else that holds the steel nut in place. (The nut slides into a slot on the side of the sleeve and it comes out just as easily as it goes in.) Expect the nut to fall out someplace; hopefully someplace where you can retrieve it. Once I figured out how this worked, I just epoxied the nut into place inside the sleeve so, when I did the final install on a jobsite, I wouldn’t risk losing the nut in the dirt, or someplace else. The nut is probably 2.5mm; it is not a 4-40, but only slightly smaller. My suggestions- 1. Disassemble the parts first in a shop, on a clean workbench, with good lighting. 2. Epoxy the nut into the sleeve, so it won’t fall out when servicing later on. 3. Continuity test the switch for integrity and use a small (silver color) Sharpie Pen to note the terminal positions & mark how they interconnect. Doing all this in advance will just make the install go a lot smoother.

Switch is nice, clicks into each spot decisively. You might need to get screws longer than the ones provided with the switch if you are mounting to a surface more than 1/4" thick though.

This is a little deep to fit in a normal double gang box. The switch it self is medium quality. Definitely good enough but not ‘industrial quality’ by any stretch.

I made a post asking a question of this manufacturer and never got a reply. With the switch in hand, it looked good, but then I noticed the tiny - TINY - lugs for securing the wire. Rated for >600 volts and 32 amps I was surprised to see that at best - AT BEST - you might get 10 AWG wire under the lugs. Truly, probably 12 AWG because the screws are so small and the depth is so shallow. So, completely unusable for my application with 8 AWG. Six strands of wire 8 AWG and the only way to even begin to get the wire into the lug is to untwist it and spread the wire so that three will go on each side of the screw. Even then, trying to get six of them on it, no way. This switch is pretty, but unless you are going to use it with relays and 12-10 AWG wire max it is wholly unsuitable for the stated amperage. Every switch they offer needs to show a picture of the lug opening and give a maximum wire size.

Use this to switch between my inverter and the street 120vac power. Needs to be ordered with appropriate box to enclose it. This unit doesn't have a voltage bounce like some switches. It has enough contacts to switch all legs of my AC power and It is rated enough to handle my current usage. Wish the cover plate had changeable labels but I made some anyway.

Very well made EZ to install use to switch solar system to line power back and forth