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Progressive Dynamics Transfer Switch Review

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Review of the Progressive Dynamics Transfer Switch


Today we're going to be taking a look at Progressive Dynamic's Automatic Switch Box. There are three different versions available here at etrailer.com. You can get the 50 amp version that we've got installed here, there's also a 100 amp version, and a 50 amp version that has surge protection built inside of it. If you're running on shore power and shore power went out and you needed a way to hook up your generator without causing any backfeeding when the shore power came back online, this box is going to be perfect for that. There's a switch for your shore power here and for your generator here and only one of them can be active at a time. You can see here on our switches that the shore power is currently in, indicating that it's active.

So our shore power is live here, going here up into our trailer. So all of our lights and everything are going to function. Our generator side here, the switch is out so our generator's not in the circuit whatsoever.What's nice about this is that our shore power that we have going in is not going to backfeed down into our generator and cause any damage when our generators either running or not running just as long as it's plugged in it's not going to get that backfeed. A benefit that this has is that if the generator does activate, it will automatically deactivate the shore power to ensure that they're never in line at the same time causing any backfeed in between them. You can see here as I push the generator switch, it'll deactivate our shore power.

The shore power automatically reactivates because we're currently plugged into shore power. If I was to unplug shore power, you'd see that this switch would also deactivate. I'm unplugging it right now and you saw that it deactivated, and then I'm going to go ahead and plug it back in.I'm now going to go ahead and fire up our generator and you're going to see that the switch for our generator is going to activate because it chooses inverter over shore power whenever possible. I'm now going to plug our cable coming from our switch box here into our generator. It has a 25 to 40 second delay when it sees power from the generator before activating it to help let that power transition to your trailer properly without causing any damage to any components.

You can see here the generator is active and our shore power is not. If I turn off our generator. Once power from the generator is gone it immediately deactivates that and then reactivates our shore power. So it's seamless and everybody that's inside of your trailer, they're not going to know that this transition really even happened, other than the sound of the generator going away.So you've seen how it works here. You probably still got some questions of why do I really even need this And the biggest benefit of it is that it keeps the two separate so there's no backfeeding...

Because let's give you a scenario. You're going to your campsite. You plug in, but the things inside of your trailer aren't coming on, the shore power is just not sufficient enough to power what you have in there. Now, shore power sometimes varies depending on how many people are at that camp site. So you can run off of your generator and then as you see around your campsite, you see other people starting to get lights coming back, indicating that power has been restored you can shut off your generator and it's automatically going to go to that shore power that you had plugged in that wasn't sufficient before, but has now come back online.Now, besides our generator here, you could have other sources of power plugged into it, such as a solar system. I would recommend though, on your solar setup, if you're plugged into shore power, that you would want to turn off your solar so it's not sending power because it is going to prioritize your inverter. And if you're plugged into power, you don't want to be draining your solar batteries and everything. So you would want to disconnect that if you are using solar. With the generator, it's the same thing essentially. You're just turning your generator off so it's not running. To show you how seamless the switching operation is we're inside the trailer and you can see the lights are on here. We're running off of shore power. I'm going to fire up the generator now. I plugged in the cable and now after our 25 to 40 second delay, it's going to switch over and you're going to see that the lights, you couldn't even tell that it switched.The system just clicked over. Now, I'm going to go ahead and turn the generator off. You're going to see it's going to switch back to shore power just as seamlessly. And now we switched back. The only thing that you really noticed there was the audible click from the switch contact, switching from our shore power switch to our generator switch. Now, one thing that you do want to keep in mind is due to the way that the switch contacts close on this, if your generator has a GFCI circuit breaker on it, it may trip that breaker whenever it tries to engage the generator switch. The contacts don't close at exactly the same time. They're very close. It's a great switch. But just due to the nature of how those switches are closing, it can cause an imbalance that can pop the generators GFCI breaker.Now this generator here doesn't have a GFCI breaker, it just has a standard breaker, so we are not going to have any of those issues. If your generator does have a GFCI breaker on it, you may want to consider a different option. Now I'm going to give you a quick rundown on how to hook it up. When you take your cover off for the panel here, there is a label on the inside that gives you a pretty good diagram of how to hook it up. But essentially what we have here, this is our shore power side. We've got our short power plug with our hot wire, our neutral wire, and our second hot wire. The output side has the same thing. And this is the load side that's going to the circuit box inside of our trailer. And then this is our generator side here on the right where we've got our hot and our neutral and then for the other hot, if you had a generator that had the capabilities of running 240 volts, you would run your second hot wire there.If not, like our generator, we're just running it for 110. We jumped it from here to here. And this just allows all the leads to have power on the inside here because the circuit board does like to see power, particularly if you have the 50 amp unit with the surge protection, power needs to be present on both for the circuits to operate properly. Over here on the side, we've got our ground hookup where you want to make sure you get your grounds hooked up for your generator and also for your shore power going to your circuit box. The other side of our generator switch here is pre-wired. So you don't really need to mess with it too much, but essentially all it is is just jumping these leads over to the output side, our load side, going to our circuit box.Over here on the right there is a circuit board and when the generator power is activated, there's a green LED there that will illuminate. It's not very bright, so if it's during the day, it's going to be pretty hard to see unless it's dark out. Over here on the left side of our generator switch, you'll see the circuit board there for detecting the generator power. Once it receives generator power and the switch is activated, the green LED will illuminate indicating that we are running off of generator power. Once you've made all your connections and made sure that you re-install your cover, this is just going to prevent any accidental shorts or touching of the wiring on the inside. And it's pretty nice how it hooks in on this side and then it's just got one screw that clamps on this side. So if you take it off, you just need to take the one screw loose over here with a quarter inch socket and you can get access to it. And that completes our look at the Progressive Dynamics Automatic Switch Box..


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee David F
Installed by:
David F
Employee Dustin K
Video by:
Dustin K
Employee Chris R
Video Edited:
Chris R

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