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⚡ Stay powered, stay protected — the ultimate DC circuit breaker for the modern energy pro!
The CHTAIXI 12V-110V DC Miniature Circuit Breaker is a 2-pole, 125 Amp thermal magnetic trip switch designed for high-current DC systems like solar PV and RV battery setups. Featuring silver alloy contacts, flame-retardant housing, and a magnetic arc extinguishing system, it mounts easily on a 35mm DIN rail for fast, secure installation. Engineered to prevent overloads and short circuits, it’s a must-have safety upgrade for any serious DC power user.
| ASIN | B0B1WFPBMV |
| Best Sellers Rank | #63,145 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #38 in Miniature Circuit Breakers |
| Brand Name | CHTAIXI |
| Circuit Breaker Type | Standard |
| Current Rating | 125 Amps |
| Customer Reviews | 4.5 4.5 out of 5 stars (100) |
| Item Dimensions D x W x H | 2.99"D x 2.13"W x 3.15"H |
| Manufacturer | CHTAIXI |
| Model | 2 Pole |
| Mounting Type | DIN Rail Mount |
| Number of Poles | 2 |
| Part Number | 47NZ125-B |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
A**R
Great DC Circuit breakers that add valuable safety
DC circuit breaker for 12-110 volts DC. I use these on my solar storage batteries as a safety device. It’s easy to forget how much amperage these batteries have and how fast things can go wrong if a short circuit occurs. You can quickly burn your house down with unprotected high amperage wiring that turns red hot burning anything in its path. Do NOT chance it going without protection even with only 12 volts. It’s the high amperage you need to worry about.
J**N
Perfecto para mis baterías, funcionando muy bien
R**.
Buena calidad y construcción
A**A
buen producto
F**S
Worked great for my solar battery bank
Work as they should
R**N
Excelente calidad precio
B**X
Recommended
Works well. Nice quality.
V**9
IDK... Update* 12/2/25 Do Not Buy
Idk.. I have the 125 amp breakers and they get burning hot when pushing them around 120 amps. I bumped current to 135 to see what they would do and they quickly got to the point where they could burn you within a few seconds. I didn't let it go long enough at that current because I thought it was going to start burning the breaker. Works good as a disconnect, and might even be ok if you have a gross over current doubling the amperage but I don't like how hot it gets without cutting out near its rated load. If I have an extra breaker at the end of my project maybe I'll do some more testing to see if it will burn up. Update* 12/2/25 I bought 6 or 7 of these things. 4 or 5 no longer work. So I did a high current test and pushed about 150a through a breaker. The 2 gauge wire stayed warm except for where it tied into the breaker. It got hot enough that it started to burn the 105c rated wire. I disconnected the system before fire but the breaker did not trip untill 30 minutes after the load was disconnected. A melted area occurred on the breaker and the wire was discolored. It hit roughly 260+ degrees before I shut it off and was climbing. So it failed my testing. Besides that A few tripped from normal use and no longer are able to reset. Another couple do reset but the contacts inside are bad. Honestly these things are a major liability and should be pulled from amazon. I pulled the remaining functioning breakers from my system because I no longer trust them to protect anything. Wish I could return.
Trustpilot
1 week ago
5 days ago