Baomain Universal Rotary Changeover Switch SZW26-20/D202.2D-W with Wider Master Switch Exterior Box 660V 20A 3 Position 2 Phase (3.15"x3.15"x3.7")

Excelente gracias

This reversing switch was exactly what I needed . Easy to install looks and functions well ⁷⁷

Wish I had taken photos of the install. It was NOT easy. This is a 20A switch, which means you'll need to use 12 AWG wire. But it works as advertised!For my project, I wanted the switch to be able to switch from power from the inverter to power from the grid. That way, my devices (fridge and small electronics) in our camp trailer would be powered no matter the source.So I needed wires coming in from the grid (two go into the box, ground wire stays outside the box)Then wires from the inverter (same deal, two into the plastic box, ground wire outside)Then four wires coming out of the box that lead the AC circuit breaker and house outlets, plus two ground wires outside the box.To wire it all up, those four ground wires got secured with a large red wire nut (max four 12 AWG) and many more wire nuts to the rest of the connections outside the box.But the connections inside the box were the hardest. Getting all those wires through the little cutout holes was tough enough, but then trying to jam the whole front faceplate and box together and screw it all together was harder. Gotta make sure that all your wire is stripped properly (no nicks in the insulation) and you have screwed down the terminals on the switch really well. Fortunately, despite the entire switch being made of plastic (except for the terminals and internal electrical connections obviously), it seems fairly durable for light use. I would not trust it in a really heavy duty situation where it could get kicked or hit, but protected and out of the way seems fine.Since this was in a mobile setting, I used stranded wire. Would probably have been easier with solid core wire. With the tight spaces in there, the risk was too great for a stray strand of wire to touch someplace it should not and cause a short, so I crimped ferrules onto the end of each wire and this made it SO MUCH easier and safer assembling it. Do yourself a favor and buy a kit with ferrules and ferrule crimper.Long story short, I ended up not using the back end of the plastic box. I just left it off and installed the faceplate part that holds the switch anyways onto some 1/2" plywood. This made it way way way easier putting the whole thing together in still a tight space inside the camp trailer under the fridge

Sturdy design. Easy to use. Looks professional.

It works to let me switch my breaker box from grid power to my solar system.

Very solid product but if you’re using Romex then be sure to buy the larger box version. Almost no room in the small box.

I live in Chicago and we have problems with dryness in the late fall, winter and early spring and humidity in late spring, summer and early fall. Unfortunately, it seems that we have to run both a humidifier and arguably a dehumidifier. Unfortunately for us again, the Nest only supports one device at a time. This switch allows the * on my Nest to be used for both. I split the * wire and use this switch to select which relay the signal goes to in order to switch between the humidifier and dehumidifier. I just flip the switch and reprogram the Nest for the device I need. It's not the perfect solution, but it beats having an ugly and dumb humidistat sitting next to my Nest thermostat. The setup is easy and the switch and housing look great. The price is also great as well. You get an excellent quality product for the money.

Using this to select power from either a generator or line/household power for a trailer. Unit is good and rating (20A, 600V) matches my needs.Regarding safety compliances: There is NOT a UL/CSA certification on the device. The exterior of the cardboard box has a "CE" (Europe compliance) marking on it, but the label on the switch itself has the "China Export CE" mark on it. From these markings, I tend to believe that they haven't been through safety certifications, but the unit appears to be good quality, so I'll use it.