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Why Choose GFEFUSE?
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Founded in 2013 in Dongguan, Guangdong, our company is a professional manufacturer ofelectronic protection devices. For years, we have been focusing on the protection device field, withan integrated team for development, production and sales, committed to providing customers withproducts of perfect performance and reliability.
Dur moin products include, fuses, fuse ho ders, fuse boxes, outomotive fuses, gutomotive fuse holders, Dcfuses, high-voltage fuses, new energy fuses ond other peripherol occessories, These products ore widelyused in multiple fields such os consumer electronics, outomotive electronics, power equipment,communicotion systems ond new energy. Aiming ot stoble performonce ond reliobility, our products hove notonly guickly won recognition in the domestic morket but olso been exported overseos, enjoying wide morketpopulority.
As 0 competitive compony in the protection device industry, we hove been committed to technologicol R&Dinvestment, quipped with 0 professionol R&D teom, we continuously promote product innovotion to ensureour wide product coveroge ond occelerote morket opplicotion speed of our products.
We olways toke quolity os our core goal and strive to be customer-oriented. Our products hove obtoined UL
cULus, Tuv, CE, COC ond other product certificotions, ond ore in complionce with ROHS ond REACH directives.
In my 12 years dedicated to the science of electronic protection, I've had a front-row seat to the incredible evolution of DC power systems. As power demands have grown, especially with the rise of electric vehicles and sophisticated industrial machinery, the need for a truly robust protective device has become paramount. This is the domain of the bolt down fuse. We're talking about managing hundreds, sometimes thousands, of amps. At that level of energy, a simple plug-in connection is no longer viable; it would melt in an instant. The secure, bolted connection is a non-negotiable requirement of physics. It creates a solid, vibration-proof junction that minimizes resistance and the subsequent heat generation, which is the mortal enemy of any high-power circuit.
At GFEFUSE, we don't just see a fuse; we see a critical energy gateway. The engineering that goes into a GFEFUSE bolt down fuse is far more complex than its simple appearance suggests. The composition of the fuse element is a meticulously controlled alloy, designed to melt at a precise temperature and time when a specific current is exceeded. The body is made from advanced engineering ceramics or high-temperature polymers to contain the intense energy of an arc flash during a major short-circuit event. This is especially critical in high-voltage battery packs, where the interrupting capacity of the bolt down fuse is all that stands between a manageable fault and a catastrophic thermal event.
I often explain to our clients that the installation of the component is just as critical as its construction. The flat, clean surfaces of the terminals on our bolt down fuse are designed to create maximum surface area contact, and using the correct torque on the fastening nuts is a vital part of the safety equation. A loose connection can be more dangerous than no fuse at all. This is why we focus on manufacturing a bolt down fuse with unwavering consistency and providing clear specifications, empowering technicians to install our products with the confidence that they are creating a truly safe and reliable connection for alternators, inverters, and battery systems.
From protecting a forklift's main battery to safeguarding the primary power distribution unit in a commercial electric vehicle, the responsibility placed on this single component is immense. It's a role we at GFEFUSE take with the utmost seriousness. My experience has shown me that in the world of high-current DC power, there is no room for compromise. Every bolt down fuse we produce is a testament to that principle, engineered to be the strongest, most reliable link in the safety chain, ready to handle the incredible power that drives modern industry and transportation.
Featured Products
Collection about GFEFUSE
GFEFUSE North American Semiconductor Fuse | UL 248-13 Fast DC Fuse for High-Voltage Systems
GFEFUSE North American semiconductor fuse offers low arc voltage, ultra-low I²t & UL248.13/IEC60269.4 approval for efficient high-voltage DC protection in energy storage, UPS and EV applications.
GFEFUSE Photovoltaic Fuse – 1500 V DC UL-248-19 Full-Range PV Protection
GFEFUSE Photovoltaic fuse offers low I²t, strong current-limiting and UL-248-19 / IEC 60269-1/6 compliance for safe 1500 V PV inverters, combiner boxes and faulted-string protection.
GFEFUSE Energy Storage Fuses – 1500 V DC 50-200 A High-Speed Square Body | 100 kA Breaking Capacity
GFEFUSE Energy Storage Fuses deliver 1500 Vdc, 50-200 A protection up to 100 kA breaking capacity for battery packs, BESS, PCS and other DC circuits. UL & IEC compliant, fast-acting, square body design.
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Frequently Asked Question
Do you have any question?
GFEFUSE is a specialized manufacturer that engineers every bolt down fuse for maximum safety and reliability. We use high-purity, low-resistance conductive elements and robust, high-temperature housings to ensure our fuses perform flawlessly under extreme loads, making them the trusted choice for protecting critical, high-power systems.
Yes, it is extremely important. Under-tightening the nuts on a bolt down fuse can cause a loose connection, leading to dangerous arcing and overheating. Over-tightening can damage the fuse body or the stud. Always follow the torque specifications recommended by the manufacturer to ensure a safe and reliable connection.
Most types of bolt down fuse feature a small, clear window on top. By looking through this window, you can visually inspect the internal metal link. If the link is intact, the fuse is good. If the link is broken or melted apart, the fuse is blown and the circuit will have no power.
The bolted connection is critical because it creates a very low-resistance, high-pressure contact point. For the high currents a bolt down fuse handles, this secure connection prevents heat buildup, voltage drop, and the risk of fire that could occur with a less secure plug-in style connection.
The common types of bolt down fuse are categorized by their physical size, voltage rating, and amperage range. MIDI fuses are compact and used for circuits typically from 30A to 200A. MEGA fuses are larger, handling currents from 100A up to 500A. ANL fuses are a popular style for high-power audio and marine applications, with ratings often spanning 35A to 750A.
A bolt down fuse is a high-capacity fuse designed to be securely fastened onto a fuse holder or busbar using bolts or studs. It is used in high-amperage DC circuits, typically protecting batteries, alternators, starters, winches, and the main power feeds in cars, trucks, RVs, boats, and industrial equipment like forklifts.
Our updates and blog posts
Square high speed fuse: The Ultimate 1500 V DC Guardian for Energy Storage & EV Systems
Discover how the Square high speed fuse from GFEFUSE delivers 1500 V DC, 100 kA protection for BESS, EV chargers and wind converters. UL & IEC approved, low I²t design.
North Americansemiconductor fuse: The 1000 V DC Fast-Acting Shield EV & BESS Engineers Trust
Discover GFEFUSE North Americansemiconductor fuse—1000 V DC, 50 kA, UL & IEC approved. Ideal for EV chargers, BESS, PV inverters. Low I²t, high cycling life.
Photovoltaic fuse: The 1500 V DC Guardian Every Solar Array Needs
Discover GFEFUSE Photovoltaic fuse—1500 V DC, 1–30 A, 50 kA, UL-248-19 & IEC 60269-1/6 approved. Ideal for string and combiner boxes. Low I²t, high cycling life.