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⚡ Fuse your ride with power and peace of mind!
The Fastronix 250 Amp MEGA/AMG Fuse Holder Kit is a heavy-duty electrical safety solution featuring a 250 Amp fuse, durable plastic construction, and secure mounting options. Designed for high-output alternators and vehicles being towed, it prevents catastrophic shorting while maintaining cool operation. This kit includes everything needed for a professional-grade installation, making it a top choice for automotive power protection.


| AC Adapter Current | 250 A |
| ASIN | B015ABMN6C |
| Best Sellers Rank | #25,989 in Automotive ( See Top 100 in Automotive ) #58 in Automotive Replacement Fuse Holders |
| Brand | Fastronix Solutions |
| Brand Name | Fastronix Solutions |
| Color | Red |
| Current Rating | 250 A |
| Customer Reviews | 4.8 out of 5 stars 562 Reviews |
| Manufacturer | Fastronix Solutions |
| Material | Plastic |
| Material Type | Plastic |
| Maximum Current | 250 A |
| Model | 500-040 |
| Mounting Type | Holder |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 500-040 |
| UPC | 635414974953 |
| Unit Count | 1 Count |
C**Z
Well made mega fuse holder
Very soild built fuse holder. Even after several times moving it till I found the perfect spot the plastic never cracked or broke and terminals stay clean. I have this fuse going from my high output alternator to my battery and it only gets slightly warm and you can still hold it without it getting too hot. We'll made product
S**R
Great product
Worked very well for my project, I am very pleased.
A**.
Thick, heavy duty, and looks great!
I really like this product! It's very strong and thick and durable. I used it on my 64 Thunderbird to fuse my alternator charge cable to the battery. I did not use the fuse that came with it. I used a 200 amp fuse as I have a 173 amp rated alternator. I only gave it two stars on water resistance because it it doesn't really have a cover. However my application does not need to be very water resistant. I think it worked great! I will be buying more for future projects.
D**S
Super strong material
This thing feels almost indestructible, the plastic is incredibly tough, yet has a bit of flex so it wont crack like the other brand i tried, before going this route. I will be buying more of these for future projects, where i need a tough fuse that can withstand the elements.
D**C
Excellent Fastronix Quality
This is a fantastic fuse holder kit. I installed it as the main fuse right beside my battery that I relocated to the trunk. The holder itself has a little bit of flexibility to it, which is nice if the surface isn't 100% flat. The 3/8" lugs are solid and it came with the 250A MEGA Littlefuse. The terminal boots are also excellent and covered the lugs securely. This was my first purchase of a Fastronix component and I was so impressed that I have since bought toggle switches, additional terminal covers, relays and a few other parts from them. All of them have impressed and they helped make the final wiring on an old Cadillac restoration a breeze.
W**G
Fuse Vs Circuit Breaker
Rather have a Blue Sea 187 surface mounted CB. Made well but only offers limited use.JMO
J**N
Converter fuse
It worked out great
G**R
I've use this company for years good products
well made thick / strong mounting pad
C**N
Bonne qualité de produit.
Système à énergie solaire hors réseau ("off grid").
A**L
Very good quality
Nice design.
Trustpilot
2 weeks ago
4 days ago