DC Miniature Circuit Breaker, 2 Pole 500V 125 Amp Isolator for Solar PV System, Thermal Magnetic Trip, DIN Rail Mount, High Current DC Disconnect Switch MCB 2P C125

This product works great. Please ensure you are using ferrules to crimp the end of the copper stranded wires before making the connection, or crip tight with a copper tube end, this will in most case prevent overheating and allow for better flow current. Also if you are using a inverter with built in charge controller is best to use a non polorized switch. This breaker is performs best in my opinion where the battery , inverter and solar controller are seperate devices.

works great looks nice and the quality is amazing seems very durable and its a great value for your money glade i bought it

Fits and works just like Chint breakers. I use on all my solar edge equipment.

I noticed several photos of this breaker where it had gotten hot or melted around one or more of the wire connect slots. The mechanism is supposed to open enough to clamp the wires inside the clamp\receptacle....but if you are paying close attention you can put wire in such a manner that a poor connection is made &\or the wire isn't correctly clamped. This will lead to reduced surface are for current to flow & can cause heating & heat damage even though the breaker itself doesn't hit its 80A limit & trip. The best method would be to solder & install ferrules on the wire ends & then make sure you open the clamp fully then insert ferrule & tighten very good....done correctly the breaker can handle its rating

Nothing else to say... I use these for my solar array in an external enclosure.

This has been in nonstop use since purchased and has worked as intended. Has not tripped yet but the max current in my system is around 60A. It opens the circuit even with 60A DC flowing through it when pulled manually.

Easy to install, works perfectly.

I bought a 100a breaker to service a solar array, charging from an MPPT with a 100a maximum charging capacity. I'm using 2awg OFC on a 15ft run from charge controller to battery, with a breaker 5ft from the charge controller.The 100a breaker was in place for about a year, running at around 75a, with a rare, short spike to 97a one time, according to history logs. It ran fine during that period of time. I decided to increase my solar array to maximize my MPPT, and the average amps every day was reached about 92a, with an accurance reaching 100a. Not one single time did the breaker pop in it's use, and the whole thing just melted from the inside out one day with extended 95a+ current. Defects happen, so I didn't put too much thought into it.Since I had head room to grow with the cables I had, I decided to repurchase the same breaker, but in the 125a version, thinking it would be more resilient to amperage. Within 3 weeks, the 125a breaker melted worse than the 100a version did. It got so hot, it charred and melted the plastic black. And guess what? The 125a breaker still never tripped.I figured that something designed to be a safety device would be made more quality, but I guess not. This is a cheaper unit, but not if it doesn't do what it's supposed to do.Otherwise, yea. Super easy to install. Just not worth the money. Spend like $5 more and get a better one.Update: I bought and replaced two more under Amazon's 30 day return windown. Every single one of these failed in the same way. This time, I even bought a second MPPT charge controller to split the 100a input into two 50a inputs, with one going to each Charge controller.... the 125a breakers still melted and never tripped.Bonkers, really.