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

The use is good. Qualities is good value for the money and it fits easily install installed easy install installation and protection level is great.

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.

Super

Easy to install and a perfect replacement for my solar combiner box. I would recommend the use of ferrules on the wires if you are using stranded wire to get a good permanent connection.

Exactly but they said it was so far works great fortunately hasn’t had to trip yet

Good quality and very strong switch

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.

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

Bonne qualité

I have 3, 6 string solar panels run through to inverter. great for maintenance shut off, or when I occasionally need to feed batteries from a gas generator. Good product.