Go Power TS-30 30 Amp Automatic Transfer Switch, Dual Source Compatibility, Generator Delay Switch, Easy Installation, Compact Design

I've been using this transfer switch for my backup power setup and it works exactly as it should. It feels solid, the wiring was straightforward, and switching between power sources is smooth and safe. It gives me peace of mind knowing I can use my generator without risking anything. Definitely a reliable piece of equipment.

I purchased this to help control an inverter that I was installing in my travel trailer. The inverter and switch needed to go into the same compartment that housed the breaker/fuse panel and converter. The panel can be accessed (with difficulty) by removing 4 screws. I did not pay attention to the dimensions of the switch and this could have been a big mistake. The switch is not a solid-state device (as I had irrationally assumed) but an electrical contactor with some relays. Fortunately for me, I was able to wedge it into position and had just enough room for the install. The switch did not come with any instructions but there is a diagram inside the cover. The cover comes off fairly easy, but if you do not notice the instructions on how to remove it (moulded into the cover) you will really struggle like I did for a while. I hooked up the wiring as indicated, connecting the inverter to leads identified for a generator. This was a mistake. This switch (basically a normal seeking auto bus transfer switch) defaults to the generator connections. Fortunately, one of the reviews on Amazon gave the web site for a manual for the switch. I downloaded the PDF and it gave several wiring scenarios, including mine. I then went back into the enclosure and switched my shore power leads with my inverter leads. Now, when shore power is restored, the switch automatically returns to shore power as the source. Interestingly, If you are switching three sources, the manual shows using two switches together and how to hook them up to prioritize your sources. I also purchased a switch to remotely turn the inverter on and off (JR Products 12005 White Single SPST On-Off Switch with Bezel). I found it to be pretty easy to connect the switch in parallel with the inverter's power switch using control wire that I ran through a cooling vent in the inverter. Now if I am boondocking or loose campground power, all I have to do is open the breaker for the converter, AC and other loads that I do not want to power, then turn on my inverter. After a short time delay, the inverter comes on line and is powering my entire trailer, making it easy for me to pick and choose which 120v items I want to use.

Does exactly what it should—switches sources smoothly and reliably. Compact, straightforward, and it’s been one less thing to worry about. Love when a product just behaves.

This is a great device for RV's and camping trailers although it can be used for many other applications as well. This transfer switch uses a solenoid and a spring to switch between AC power sources and to fallback to the default. With 30 amps you can attach up to a 3,500 watt generator or inverter to it. There are nice 6" pre striped wire leads that you just need to attach your wires to with wire connectors. The box is made of a strong material and is much bigger than the device in side so there is plenty of room to fit your wires and wire connections. There are no fuses in this automatic transfer switch so you will want to make sure that you get 30 amp fuses to add between your feed sources and this box. On the left side there are push through, one way, wire feed holes with ears that are pretty stiff so I have found that I need to pre expand them with a flathead screwdriver before trying to feed the wire through. There is a wiring diagram sticker under the lid to make it easy to install and the instructions make sense. This switch is made to automatically switch between grid or shore power to generator power and back. Because this device expects a generator to power its second circuit there is a 30 second delay after sensing power before switching to the generator circuit. This is a nice added feature that allows your generator to warm up before having to power a heavy load however if you intend to use this on an AC inverter instead of a generator then the 30 second delay is not necessary and is just long enough of a delay that you have time to think something is broken before it engages. I wish there was a simple switch to quickly turn on or off this feature but there are ways to bypass it if you need, just ask your installing electrician. This device makes a good strong click when it switches between sources. I like the click because it is a great indication that the switch is working however it is just loud enough to startle some and if you do not know what it is then it can be somewhat worrisome. These switches are stackable if you have 3 or more power sources just use the output from the first as the shore power input to the second. I have used these on a few projects and they have worked great every time. I highly recommend them as long as your electrical usage needs do not exceed 30 amps.

Works very well, I would recommend more over. Easy installation also.

I replaced a manual transfer switch that I had in my shed that had Shore and Solar power connected. As the batteries ran out of power and the voltage dropped too low, the inverter would trip / the inverter alarm would go off and it would cut power from the shed. Not a huge deal as there's nothing essential in there, it was more my experimenting with solar, for lighting, the shed fan, and recharging of the mower battery. I just got tired of running outside switching back and forth from shore the solar setup that powers the two sealed 'car batteries'. This a automatic transfer switch did the job perfectly. I remember seeing these a few years ago when I first toyed with building a 'solar shed', but I don't remember why I didn't go with this over the EZ Generator Switch (https://www.amazon.com/gp/product/B00FADDE0A) - especially since this one is cheaper. Probably just because I didn't need to hard wire it and I could plug a cord directly into it from the inverter. One thing that I remember not liking was the 15 second delay in returning to the Primary power supply, but after re-reading / researching this topic, they've addressed that issue with the addition of some jumper pins coming off of the little circuit board that's at the bottom of the unit. I just found an old 'jumper cap' from an old computer (like this here: https://www.amazon.com/ZYAMY-2-54mm-Standard-Circuit-Connection/dp/B077957RN7) to bridge the pins and then tested. It would instantly failover to the secondary and instantly failback to the primary after that. Easy day. The updated instructions from their web site (https://s3-us-west-2.amazonaws.com/catsy.549/MOBI_MAN_GP-TS-30.pdf) show how to do it (see page 5). My setup is as follows: Solar Panels --> Charge Controller --> 2 Batteries --> 1000w Inverter --> Primary / 'Dominant' Supply on the TS-30 Automatic Transfer Switch. House Power --> Secondary / 'Default' Supply on the TS-30 Automatic Transfer Switch From there the Load goes to a Two Circuit Panel ( https://www.amazon.com/gp/product/B00002N7MM ), that has a 15 amp circuit breaker that goes to the load. So far so good - now I just need to figure out why the GFI that's in the basement between the main panel and the garage trips during transfer. The shed gets it's 'shore power' from an exterior outlet that's connected to the garage and that GFI is part of the circuit. UPDATE: At first I thought it was due to load, but then realized that it would trip the GFI in the basement when changing from 'shore power' back to Solar... In both Solar and Shore mode, the outlets in the shed work fine. In further testing, it looks like the basement GFI only trips when going back to Solar, but ONLY if switching back and the inverter alarm was previously going off for something like a low voltage alarm while powering chargers overnight. When the sun comes back up and the batteries are back to 12+ volts, the alarm still stays on. Have an e-mail in to Renogy about this to try to get it all sorted out.

I added this to my trailer when I expanded my solar system and added an inverter. It switches to and from shore power as it should. My default mode of camping is off grid so I inverted the signal leads and now it will wait for shore power or generator to get up and running for a few seconds before cutting over allowing for no interruption in power. Installation was so much easier thanks to the quick connectors inside. It really helps if you're working in a small space which made it worth the extra expense.

I have this installed in a small off grid cabin system. The transfer switch performs exactly as written and is easy to install (provided you have some experience with electrical wiring). I have a Honda generator wired to one side acting as Shore Power and my Solar setup coming off my DC to AC inverter is wired to the other side. 20 seconds after my genny starts, the transfer switch automatically switches the power from the inverter to the genny saving my batteries for future use. When the genny shuts off, it automatically switches back. The lights flicker for a millisecond (ok, haven't actually timed it). The transfer is fast - does not interrupt my oven clock, etc but does shut the TV off during the switch. great product - means less switches to throw when switching power sources, easier to everyone to use.