Features
Why Choose GFEFUSE?
We Have The Best Solutions for Your Business
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.
After 12 years in the electronic protection industry, I’ve seen technologies come and go, but the rise of solar power has been a true revolution. With it has come a new set of challenges, the most critical of which is long-term safety. A solar panel is warranted for 25 years, and every component protecting it must be designed for that same lifespan. This is the incredible responsibility that rests on the solar fuse. It’s a component that will sit in a box on a roof, baking in the summer heat and freezing in the winter, and it must be ready to perform its one, critical job flawlessly on day one or on day 9,000.
The most misunderstood threat that a solar fuse is designed to fight is not a massive lightning strike, but the silent, creeping danger of reverse current. When a single panel in a string gets covered in leaves or fails, the other panels, connected in series, will force their combined voltage through it, turning it into a heater. This low-level fault can generate immense heat over time, and it's a condition that a generic fuse would simply ignore. At GFEFUSE, we have spent years perfecting the element design of our fuses to be acutely sensitive to this specific danger. Our gPV-rated solar fuse is the purpose-built solution that ensures these low-current faults are safely cleared before they can start a fire.
Then there is the challenge of the voltage. Modern solar farms operate at 1500 volts of direct current. At that potential, an electrical arc behaves like a plasma torch; it doesn't want to be extinguished. The technology inside a GFEFUSE solar fuse is designed to tame that arc. When the element melts, the arc is forced into a tightly compacted, high-purity silica sand, which cools, deionizes, and smothers the arc in milliseconds. The robust ceramic body is essential to contain the pressure and heat of this event. This advanced, internal arc-quenching system is the core technology that makes a high-voltage solar fuse safe.
I tell every solar professional I meet that their reputation is built on the long-term safety and performance of their installations. The choice of a high-quality, certified component like a GFEFUSE solar fuse is one of the most important decisions they can make. It’s an investment in asset protection, fire prevention, and peace of mind. It’s the small, unseen guardian that watches over the system, day and night, for decades. It's a profound duty, and we build every single solar fuse to be worthy of it.
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.
User Reviews
What users say about GFEFUSE
Frequently Asked Question
Do you have any question?
GFEFUSE is a premier manufacturer because we specialize in the high-voltage DC technology that is essential for solar safety. Every solar fuse we produce is engineered for long-term durability in harsh outdoor environments and is certified to global standards like UL 2579 and IEC 60269-6, providing the bankable reliability that large-scale solar projects require.
The industry-standard formula for sizing a solar fuse is to take the Short Circuit Current (Isc) rating from your panel's datasheet and multiply it by a safety factor of 1.56. This ensures the fuse rating is high enough to avoid nuisance blowing from normal solar irradiance fluctuations but low enough to provide fast protection when a real fault occurs.
A solar fuse is most commonly installed for each solar panel string within a device called a solar combiner box. By placing a fuse on each string's positive conductor, a single faulty string can be safely and automatically disconnected from the rest of the array, preventing it from damaging other panels or causing a wider system failure.
No, you must never use an automotive fuse in a solar installation. A car fuse is not rated for the high DC voltages of a solar array (often 1000V or more) and is not designed to protect against the unique fault conditions of PV systems. Using the wrong component creates a severe fire hazard, making a purpose-built solar fuse a critical safety requirement.
The "gPV" rating is the most important standard for a solar fuse. It certifies that the fuse is a full-range device specifically designed for Photovoltaic applications. This means it has been tested and proven to safely interrupt the full spectrum of overcurrent faults found in solar arrays, from minor reverse currents to massive short circuits at high DC voltages.
A solar fuse, also known as a PV fuse, is a special type of DC fuse designed to protect solar panel strings. It's necessary because it is engineered to handle not only major short circuits but also the low-level, sustained reverse currents that can occur when panels are shaded or fail, which is a specific fire risk that a standard fuse is not designed to protect against.
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.