2PCS 12V-24V 30A Automatic Reset Circuit Breaker | 30Amp DC Breaker, with Cover, for Car RV ATV Ship Boat Battery Charger

installed on my highlander, between battery positive terminal and 7pin trailer socket for brake control power. So far and 500miles later, break works well and didn't notice any problems.

Recently purchased our pull behind camper to find out that all items needing to work off the 12 volt system wouldn’t work unless hooked up to the truck’s wiring harness or a 30amp electrical service even though we knew the camper’s battery was good. As long as you know your battery is good and there are no breakers tripped or broke fuses this is the next step. Some of these have a push button breaker. My old one did not & the new one seems to be a one & done type situation as well. So it’s nice that it came with 2 and it’s also nice to have the waterproof rubber protective casing since most installations seem to be exterior. Ease of installation for a DIYourselfer should only take minutes to remove & replace. TIP: Disconnect your battery first is always best remembering the simple phrase “negative first…negative last”. FYI: if you don’t own a voltage meter for checking your battery most auto parts stores will test it at no charge if you bring it in.

this circuit breaker is great. does the job intended for on my RV

These breakers can be used in a lot of applications- RVs, marine, cars, solar, or any other little bench project. They all have studs to connect the cable to, and they have to be connected properly to work properly. They also have covers that fit snugly over the entire connector, although getting the top cover on is fussy and takes a bit of time. I'm glad I don't have to do it very often. Info about these- in case you don't know... there have an auto-reset feature. They work on temperature, so when the current going through the internal connector reaches a certain temperature, it clicks off. After a short time, 10-30 seconds usually, it clicks back "on" because the internal connector cools off a bit and goes back to the closed position. Kinda cool how that works. If the short or overload is still there will will continue to click on/off until the problem is fixed. When this clicks off depends, of course, on the amperage rating. There instructions say how it should be hooked up. After this is mounted and the wires connected there's a plastic cover that swings over the top. It covers the studs as well as the switch. When done it's totally covered, so it looks nice and clean, and protected from splashing water and dust/mud. Putting the cover over the studs takes some fidgeting around, but after about 10 seconds or so it manages to go on. These are nice because they work as a regular breaker, but I don't have to go to the breaker to switch it back on. When something happens I'll know because the light (of whatever) is off. I'll check the problem, fix it, wait for this to reset, and all is good again. The downsides: - this type of breaker requires that I have to wait for it to reset. When I'm standing there waiting for 10-30 seconds (or whatever the time is) it feels like a long time. It's the price I pay I guess. - this works on temperature and not excess current. If this is in a warm/hot place it may click off before it should because it senses a lot of heat. Conversely- if it's in a real cold place it might click off too late, possible damaging things. This is something to consider in your situation, and think about what you want to protect. - these have a current rating, but looking at the specs for some of these is wise. For example- some specs on breakers like this I've seen that a 20A rating means it will click off at 50% over rating (20A) in 8 seconds, and at 100% in 2 seconds. That could be a long time to wait for a breaker to click off while it fries your circuit. Again - think about your application. In the end- for small applications and having the auto- reset feature, these are a good buy. I use them fairly often with no issues.

i use these on building street rods and 12v solar units with great success.

Used in place of 30 amp fuse for aftermarket fans.

The item arrived on time. It is a quality product.

Fast delivery. Sold as described.