40 Amps Audio Inline Circuit Breaker Reset Fuse, 12V-24V DC Manual Reset Inline Fuse Holder for Car Marine Trolling Motors Audio, Stereo Switch and Solar Inverter System Protection 40A 1 Pcs

Great quality and very easy to install!!! Just a push of a button and it’s on are off! Got this item to turn off my aftermarket amp. Just cut your wire from end to end then install the wire through either side of the outlet and your all set.

We have had several of these that will cut off very close to the 30A they are rated ... will buy again

Works well. I have it in line with a positive solar panel cable. Easy way to "turn off" the solar panel if I need to disconnect the battery.

The Connectors have removable brass sleeves that allow larger wire.

UPDATE: DONE WITH THESE FOREVER.Both breakers are defective. They cannot handle more than 30 amps. My conductors are cleanly installed 8AWG marine-grade copper cabling with the appropriate ferrules installed tightly. The breaker gets hot and loses contact, then regains contact after it cools. Upon closer inspection, there is some green corrosion deep inside the lug clamp. (I have not had these long enough nor has it been humid enough here to form oxidation.) It feels like I was sent used & returned product that was poorly tested and restocked. I will NOT be returning them as a service to other buyers since I do not want anyone else to deal with this garbage. I can repurpose them as low-current cutoff switches for hobby stuff. Please DO NOT use these in mission-critical applications as this could result in equipment damage or worse.ORIG:One of the 50A breakers loses contact at 30A. It doesn't trip, it just loses good connectivity internally resulting in a voltage drop, which really confuses my solar controller.

Installation straight forward, water tight, used these in my solar build for jeep jk. Have not tripped.on so far but chose these resetable breakers over carrying and fumbling around for a fuse.

Easy to install. I used the circuit breaker as protection and an easy on/off switch to protect a circuit form unauthorized use. It is in a lockable cabinet

One seems to work. One was defective and just melted. I haven't overloaded working one but it hasn't got hot. I use it as an isolator switch but I would not depend on it as a fuse.