SKU: 35608612695

Exotronic 300A High-Interrupt MEGA-Style Ceramic Fuse w/ Holder

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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

Exotronic 300A High-Interrupt MEGA-Style Ceramic Fuse w/ HolderExotronic High Interrupt MEGA Style Ceramic Fuse with Holder: Engineered for Critical Circuit Protection Advanced Ceramic Fuse Technology for High Current Applications The Exotronic 300A High Interrupt MEGA Style Ceramic Fuse with Holder provides a robust, ready to install solution for protecting high current electrical circuits in demanding environments. Designed to meet High Rupturing Capacity (HRC) standards, this fuse and holder combination

Exotronic High-Interrupt MEGA-Style Ceramic Fuse with Holder: Engineered for Critical Circuit Protection

Advanced Ceramic Fuse Technology for High-Current Applications

The Exotronic 300A High-Interrupt MEGA-Style Ceramic Fuse with Holder provides a robust, ready-to-install solution for protecting high-current electrical circuits in demanding environments. Designed to meet High Rupturing Capacity (HRC) standards, this fuse-and-holder combination ensures rapid, safe disconnection during overloads and short circuits, reducing the risk of equipment damage and system downtime. Unlike generic blade fuses or lower-rated alternatives, the ceramic body offers superior thermal stability and dielectric strength, making it suitable for applications where high fault currents are possible.

Each kit includes a purpose-built holder that secures the fuse with bolted terminals, minimising contact resistance and preventing loosening from vibration. The transparent blue cover allows visual inspection without disassembly, while the compact footprint (77.5 mm overall length with 56 mm mounting centres) fits easily into crowded electrical enclosures. Whether you are protecting a battery bank, inverter circuit, or industrial control panel, this fuse delivers consistent, predictable performance.

Why Ceramic Fuses Outperform Standard Options

Ceramic fuses are preferred in high-interrupt applications because they can withstand the intense thermal and mechanical stresses of a short circuit. The Exotronic MEGA-style fuse uses a ceramic tube filled with arc-quenching material, which extinguishes the arc quickly and safely. This design achieves a 10 kA interrupting rating at 250 V AC/DC, far exceeding typical automotive or glass fuses. For systems with large battery banks or high-power inverters, this capability is critical to prevent catastrophic failure.

Additionally, the time-current characteristics are optimised for both overload and short-circuit protection. At moderate overloads (e.g., 135% of rated current), the fuse will open within one hour, while at high fault currents (e.g., 400% of rated current), it clears in milliseconds. This dual response protects cables and equipment from overheating while avoiding nuisance blows during normal surges.

Key Features

  • High Interrupting Capacity: 10 kA at 250 V AC/DC safely clears severe faults
  • Ceramic Body: Excellent heat resistance and arc suppression for longevity
  • Bolt-Down Terminals: Secure, low-resistance connections that resist vibration
  • Included Holder: Transparent cover for visual inspection, with mounting holes for fixed installation
  • Wide Operating Range: Rated for 250 V AC/DC, suitable for 12V, 24V, and 48V systems
  • Compliance: Designed to meet requirements of UL and GB 13539 “aR” standards for predictable performance

Applications Where Reliability Matters

This fuse is ideal for any high-current DC or AC circuit where a fault could cause significant damage. Common uses include:

  • Battery bank main protection in off-grid solar systems
  • Inverter/charger input and output circuits in caravans and RVs
  • Marine electrical panels and trolling motor wiring
  • Industrial machinery and motor control centres
  • Mobile workshops and overland vehicles with auxiliary power

In each case, the Exotronic ceramic fuse acts as a critical safety barrier, isolating faults before they propagate. The included holder simplifies replacement and ensures the fuse is always correctly seated, reducing maintenance errors.

Installation and Maintenance Benefits

The fuse holder is designed for surface mounting with two screws (56 mm spacing), and the bolted terminals accept ring lugs for a professional finish. The transparent cover snaps securely but can be opened without tools for quick fuse changes. Because the fuse element is enclosed in ceramic, there is no risk of molten metal ejection during a fault, enhancing safety for nearby components and personnel.

For systems that experience frequent load cycling or high ambient temperatures, the ceramic construction maintains consistent resistance and blow characteristics over time, unlike plastic-bodied fuses that can degrade. This reliability reduces the need for periodic replacement and lowers total cost of ownership.

Protect Your Electrical Investment

Don't leave your high-current circuits vulnerable to inadequate protection. The Exotronic 300A High-Interrupt MEGA-Style Ceramic Fuse with Holder offers the interrupting capacity, thermal resilience, and ease of installation that professionals demand. Install with confidence and keep your power systems running safely.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35608612695

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4.2 ★★★★★
Based on 8 reviews
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J
Verified Purchase
Just passing through
Phoenix, US
★★★★★ 5
My Baby loves his new baby!
Size: Medium, Size: Medium
Finally! A ball my 107 lb. pitty/pointer mix can’t destroy. He has torn up every single “indestructible” toy in a day or so until now. He peels fabric and fur off non-rubber toys. He is a 4-legged shredder. I’ve added pictures of him for a size reference of my dog versus this product. I know I had wanted that when shopping for this item. This ball is now his beloved “baby.” He goes absolutely insane looking for it, chewing it, chasing it, and even sleeping with it. He won’t rest unless he knows exactly where it is. It is his only toy, and he is good with that. After getting this home, I tried giving him other choices, but he won’t touch them. I was worried that he would rip it apart by putting his teeth in the holes, but so far, not a scratch. It is soft enough to collapse just enough to keep it from cracking when his jaws crush it but not so soft that he can rip it to sheds. The holes are large enough to prevent a suction or vacuum effect on his tongue or mouth. For his size jaws, it is a perfect fit. Other dogs might have problems with suction or be able to get their teeth in those holes and rip it apart. Who knows? The older version of the Chuckit squeaky ball was his favorite for the year and a half he had it, but the way they make them now, he peels off the orange triangle in hours flat, the squeaker falls out (choking hazard), and then he rips it apart. I’m going to stock up on these. I can’t imagine how crazy he will be if they ever stop production or change the materials.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2019
L
Verified Purchase
Ladybug27
Lowell, US
★★★★★ 5
Best Balls Ever!!!
Size: Medium
These are the best balls ever! We have 2 very active ball loving dogs and these bounce very well and they actually hold up with active play and chewing. They still look brand new after daily use for months!
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Reviewed in the United States on May 15, 2026
D
Verified Purchase
David
San Leandro, US
★★★★★ 5
Finally a ball my power chewers cannot destroy
Size: Medium
I have two dogs, an American Bully and an American Pit Bull Terrier, and both of them love to chew. Most balls last a very short time around here before they are shredded or missing big chunks. This one has actually held up. They chase it, tug on it and sit and chew on it, and it is still in one piece with no pieces breaking off. One of my favorite things is being able to put food inside. I add some kibble or small snacks, and they will happily sit and work on it for a long time. It keeps them busy, gives them something safe to chew, and they get a little reward while they play. When they are done, I just rinse it out and it is ready to go again. If you have strong jawed dogs that usually destroy toys, this ball is worth trying. Mine really enjoy it and I feel better knowing they finally have a ball that can keep up with them.
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Reviewed in the United States on November 22, 2025
J
Verified Purchase
Jen Siefert
Cuba, US
★★★★★ 5
My dog LOVES this ball
Size: Medium, Size: Medium
Does your dog destroy tennis balls in seconds? Yes? Then your dog NEEDS this ball! It's squishy like a tennis ball, fits in ball launchers (even the cheap ones) and bounces when it hits the ground. My dog has been literally playing with this ball all day and not a single mark on it! The only bad thing is that it does not float. Definitely worth the money! Put it in your cart!
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Reviewed in the United States on March 8, 2026
W
Verified Purchase
Wolf-Haven
Cuba, US
★★★★★ 5
Perfect for ball demolishers
Size: Medium
The dogs love the chuck it brand. I don’t know what it’s made of but they go crazy over them. Will not play with another ball. Wonder if it’s “laced” with an addictive scent. Have pits. Very durable. Not able to chew to pieces. Last for about 6 months before there is a small break. I keep a back up because when the ball goes missing the house is in chaos. 😆 🤪
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Reviewed in the United States on March 27, 2026

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