MDY Heavy Duty Battery Disconnect Isolator Master Cut Out/Off Kill Switch 12V/24V 200A-500A for 5 Seconds Car with 2 Removable Key Yacht Rotary Switch Isolator Master Power Switch

I used this as a disconnect for the battery/solar setup I created for my pop-up trailer. Easy install and worked great however 1 of the keys has already broken on me.

Used on a dual battery car carrier. I have an electrical leak somewhere down the line. This prevents dead batteries and adds a layer of security.

I have two of these switches installed in a race car and these are working well so far. Easy to install and use.The one thing I would change on these is the large terminal retainer. It’s a thin washer that threads on to the stud to keep it seated, but it is barely retaining it. If jostled, the terminal will loosen up in the housing as the washer will jump a thread or two. Then you can’t tighten the lug down all the way until you spin the washer all the way down to snug up the terminal again.If the manufacturer replaced this washer with a thin nut it would be optimal. But once everything is tightened properly, it ‘s a non-issue.I would definitely buy again. In fact, we will for the sister car.

Very good to use

This is exactly the same dimensions as the battery disconnect that came with my 2016 FR Rockwood Ultralite travel trailer. I had a concern about the size because their photograph shows the item to be four inches in height. Actually, it is four inches with the key inserted, not with the cap they show in their diagram (without cap or key its about 3 inches in height). Mine did not come with the red cap they show, just the two keys. The attached photos show the item installed in its faceplate. I used the old key and just kept the new ones as replacements.

I like they packaged it well and all my parts was there even give you another kill switch handle for a spare

This was so easy to install. My RV would drain the battery in a day from the camera and the Carbon Monoxide detector. This little device is well worth the little it costs.

Arrived in good time and works as it should.