Our square semiconductor fuse delivers high performance and robust short-circuit protection, making it versatile for applications like energy storage, wind power, rail transit, electric vehicles, PV inverter protection, and more.
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With over 20 years of experience and more than 500 satisfied customers across 50+ countries, HIITIO is your trusted partner for high-voltage DC solutions in electric vehicles, solar energy systems, energy storage applications, and more.
As a prominent electrical components manufacturer, HIITIO specializes in high-voltage DC applications.
HIITIO holds prestigious certifications, including ISO9001, ISO14001, ISO45001, and IATF16949, attesting to our commitment to quality, environmental responsibility, occupational health and safety, and automotive industry standards. There are four series of fuses designed to ensure the safety of power systems
Our Square Body Fuses ensure reliability and peak performance for EVs, charging systems, battery storage, and solar PV systems. The square-body fuses offer robust current limiting, a high breaking capacity (up to 3000A and 2000V), and an impressive 250kA interrupting capacity.
Exceptional breaking capacity, reaching up to 250kA, with strong current limiting capability. Ideal choice for applications where safety and protection are of utmost importance. Handle the highest fault currents, providing a secure shield for your electrical systems.
Remarkable high voltage and current ratings of up to 2000V and 3000A.These fuses are built to handle the most demanding electrical environments, ensuring unwavering performance in critical applications.
A diverse range of models designed to cater to specific application scenarios to meet your unique requirements:
rail transit, electric vehicles, ships, energy storage, or photovoltaics, our fuses are tailored.
Outstanding resistance to voltaic impingement, environmental conditions, temperature fluctuations, mechanical vibration, and impacts.
omplies with multiple international standards: UL248.13 / IEC60269.6 / GB31465.6 / JASO-D622 / ISO8820.8, and CE. Obtained the manufacturing process certification under the IATF16949 quality system, meeting the stringent requirements of the automotive industry.
Optimized supply chain, establishing close ties with reliable suppliers. Plan procurement, manage inventory. Optimized supplier delivery structures
4 semi-automatic production lines and 1 fully automated production line to further enhance productivity and quality control
Distinguished certifications such as ISO9001, ISO14001, ISO45001, and IATF16949, underscoring our steadfast dedication to upholding the highest standards
UL, cUL, CSA, CE, CB, TUV, SEMKO, CCC, VDE, and more. Actively researching customer needs and industry trends, seeking additional certifications.
Independent laboratory for electrical life testing, breaking capacity testing, high and low temperature testing, etc. 30+ people R&D team with 10+ years developing experience
Pre-sales Services: product consultation, technical support, customized solutions, sample service, and fast delivery.
After-sales Services: Respond to your questions and complaints in a timely manner and provide the best solution.
A Square Body Fuse is a type of electrical protection device designed to safeguard electrical circuits and equipment from overcurrent conditions. Unlike traditional cylindrical fuses, square body fuses have a square or rectangular shape, which provides several advantages, including enhanced mechanical stability and better space utilization.
These fuses are typically used in applications where high voltage and high current protection is required, such as in industrial settings, power distribution systems, and enery storage equipment.
The Square Body Fuse features ceramic housing, and its internal fuse element is crafted from either pure silver or a silver-copper composite, ensuring a swift response to over-current conditions.
The terminals provide the option of blade or flat-head type, offering convenient connection methods. Some models include indicators for users to easily check the fuse status.
This design makes the Square Body Fuse efficient in safeguarding electrical systems, with a user-friendly and straightforward operation.
We offer a range of Square Body Fuses, including the
These fuses are available with either external bolt-on or internal flat-head bolt-on installation options. Whether it’s rapid fusing for high currents, high-density energy storage, or specialized applications in photovoltaic systems, our Square Body Fuse series provides excellent protective performance and diverse installation choices to meet the varied needs of different electrical systems.
In energy storage battery systems, aR type fuses are typically chosen for short-circuit protection, gPV type fuses are used for overload protection, and gR type fuses are commonly selected for graded protection.
Ensure that the rated voltage is higher than the battery system’s highest voltage.
When determining the correct rated current value, consider the following:
UL-rated fuses have a lower overload capacity. The rated current (In) is calculated as In = Ir/Of, where Ir is the circuit’s operating current, and Of = 0.75 represents the fuse’s current reduction factor. For instance, with a circuit operating current (Ir) of 1.5A, choose a 2A fuse (1.5/0.75 = 2A).
IEC-rated fuses have a stronger overload capacity and do not require current reduction, meaning Ir = In.
For semiconductor protection using fuses, the I²t (current-squared-time) impulse that semiconductor devices or circuits can withstand should be low to prevent damage.
Therefore, matching fuses should have a small I²t value, which must be less than the semiconductor’s I²t capacity. However, in energy storage systems, when using semiconductor protection fuses (aR or gR), achieving graded protection often requires larger rated fuses at the next level.
Maintenance before short circuit: no maintenance is required.
Maintenance after short circuit: Replace the blown fuse with a new one. Replacement is quick and remains as effective as before to keep equipment safe
HIITIO Square Body Fuses serve as the linchpin in state-of-the-art ESS solutions. Providing voltage and current ratings of up to 1500V and 800A, the HCHVT1500-74E Series and HCPVT1500-74ES Series guarantee the robustness of Battery Storage Systems and Solar PV installations. With exceptional environmental tolerance and precise current limits,
Secure your energy infrastructure, guaranteeing uninterrupted performance in dynamic energy storage environments.
Square Body Fuses are typically installed on the DC side of energy storage systems to protect the system from damage caused by overcurrent. Specifically, they may be installed on the DC connecting lines, DC battery packs, or DC inverters of energy storage systems.
Such fuses are designed to disconnect the circuit when the current exceeds a safe threshold, preventing damage to equipment and the system caused by overcurrent. The exact selection of the installation location depends on the system’s design and specific application scenarios.
Elevate rail safety standards with our Square Body Fuses. HCHVT750-36E is the epitome of reliability in Metro and Rail Transportation.
Resistant to mechanical vibrations and impacts, we ensure uninterrupted power distribution, enhancing the safety and efficiency of critical rail systems.
Our Square Body Fuses redefine the paradigm of Charging Station safety. With a focus on strong current limiting capability, we offer optimal protection for Charging Stations, mitigating risks associated with overcurrent events.
Ensuring a seamless charging experience, combining advanced technology with robust design for unmatched reliability
HIITIO Square Body Fuses drive the evolution of Electric Vehicle and E-Truck safety. HCHVT1000-59ES Series features high voltage and current ratings of up to 1000V and 630A, these fuses guarantee the secure operation of EVs and E-Trucks.
Yes, we have customers in the United States and Europe. For more information, please contact us.
Yes, we have a distributor policy. Warmly welcome you to discuss with us.
Sure, we can provide free samples after evaluation.
When there is inventory, the delivery time is within a week If there is no inventory, the delivery time is subject to order and will be as early as possible.
Yes, OEM and ODM are available.
HIITIO® was established in 2018 as a result of Hecheng Electric introducing a mature R&D team. HIITIO specializes in producing high-voltage DC electrical devices for EV, solar energy systems, and energy storage applications.
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