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PC Type Dual Power Automatic Transfer Switch(ATS) ---
1.PC Type,Internally composed of electromagnetic relays, coils, circuit boards, rectifiers, and limit switches.
2.Dual Power Automatic Transfer Switch,it means there are two power source need to be connected,can not be 3 or 4.
3.Two power source,we call them normal power (N) and reserve power (R).Normal Power usually is city power, Reserve Power can be city power or generator ,just make sure the input voltage should be 220V. And inverter can not be reserve power,if you need a PV ATS,we also produce it.
Wire Diagram
Easy wiring,please wiring the ATS according to this wiring diagram, if there is no power, please check the green terminal side,maybe the screws are not tightened properly.
Measurement
This ATS can be installed in pc electric box which need to be din rail mounted.
Manual-Auto Button
If you want it to work automatically,please make sure the button in "Auto" position.
If you want to transfer the power by your hand,please make the button in "Manual" position.
4 pcs Wires
The ATS will come with 4 wires for AR/AN BR/BN connecting.
Din Rail Mounted
Din Rail Mounted,can be installed in PC Electric Box.
M. Adam Davis
2025-09-05 14:12:44
These automatic transfer switches are very useful for power switching between sources. I'm using this one to power a subpanel with most of my household circuits on it. It switches between utility power and a solar system, so when there's enough solar to run my house then it runs on solar, and when there isn't it runs on utility power. This avoids having to deal with utility interconnect because it's just wired like a backup generator and we never feed power into the utility - this switches between the two sources.This is one I keep as a backup. I started by using a two pole ATS, but it failed after about a year of use (and over a thousand switchings). One side failed, and since I have the neutral connected separate from this switch half the 110V loads were working fine, but the other half was behaving oddly. Nothing was damaged, but this concerned my enough to start using a 4 pole ATS, and double up on the contacts - so one hot goes through two switches, and the other goes through the other two switches.In this configuration the previous ATS lasted for several months, but then stopped switching. I didn't investigate far enough to find out what failed internall, but the switches themselves were fine and it was usable in manual mode until I replaced it.These are inexpensive units, and if you go this route then it's good to have a spare on hand.All that said, I've spent enough time and money on these that I would be better off spending the extra cost on a 200 amp ATS mounted next to my electrical meter. Those are expensive, and I'm not sure if they're intended to be switched twice or more often a day, but these ones clearly don't last for thousands of transitions.If your switching infrequently, and your load is light it's probably suitable.This four pole switch takes long enough to switch over that it resets some equipment (projector, sound system) in the house. The two pole switched fast enough that this wasn't an issue when we were using that. Nothing else is reset, though - computers (desktops without a battery as well as laptops), microwave and other appliance clocks, streaming devices like Roku, and smaller TVs seem unaffected by the brief outage during switchover.Overall I'm not unhappy with these, they are great for backup and low duty use such as in RVs and boats with shore power vs onboard power switching, but they don't seem to be good for frequent actuation.
Tony T.
2025-08-16 18:49:14
Good solution for a generator backup system. Provides good isolation in the event of a power outage you will not create a dangerous back-feed into the power grid. Wiring is pretty straight forward if you're at all qualified to install such things. Quality is fairly decent, but the terminals are a little small compared to what I'm used to seeing and were not big enough to fit my primary cables from my utility entrance, so be aware that some updates may be in order for older homes.
William
2025-02-06 10:07:22
I am using this as a switchover for my backup generator system. Installation was fairly easy primarily because I already knew what I was doing. the switch works great with very little delay. It is made well and works as it should. With any of these it is smart to test them out at various periods to make sure they work when you need them to work. I even keep a backup in case this one fails.
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