Description
GFEVT750-36 25A-400A 750V DC High Speed Automotive Fuse
Features & Benefits
- This product is a fuse designed for partial range protection.
- It features low I²t, strong current-limiting capability, and high breaking capacity.
- It is suitable for applications in industries such as rail transit, electric vehicles, and boats.
- It can serve as backup protection after short-circuiting for energy storage systems, power systems, conductors, and other devices and equipment.
Dimensions (mm)
Description
- Design For DC Applications
- Excellent Dc Performance
- Superior cycling capability
- Low Watt Losses
Standards/Approvals
- Refer to UL 248.1 / UL 248.13
- IEC 60269.1 / IEC 60269.4
- Reach declaration available upon request
- RoHS Compliant
Fuse Ratings
| Part No. | Fuse Amps | Breaking Capacity | Average @50KA/750Vdc | Power Loss (W) | Installation torque | |
|---|---|---|---|---|---|---|
| A²s Melting | A²t Clearing | 100% | ||||
| GFEVT750-25A-36 | 25 | 50kA | 32 | 96 | 8 | 11.0±1.0 N·m |
| GFEVT750-32A-36 | 32 | 50kA | 46 | 138 | 9 | 11.0±1.0 N·m |
| GFEVT750-40A-36 | 40 | 50kA | 81 | 254 | 10 | 11.0±1.0 N·m |
| GFEVT750-50A-36 | 50 | 50kA | 148 | 490 | 13 | 11.0±1.0 N·m |
| GFEVT750-63A-36 | 63 | 50kA | 310 | 1070 | 15 | 11.0±1.0 N·m |
| GFEVT750-80A-36 | 80 | 50kA | 535 | 1890 | 18 | 11.0±1.0 N·m |
| GFEVT750-100A-36 | 100 | 50kA | 870 | 3140 | 20 | 11.0±1.0 N·m |
| GFEVT750-125A-36 | 125 | 50kA | 1450 | 5465 | 24 | 11.0±1.0 N·m |
| GFEVT750-160A-36 | 160 | 50kA | 2740 | 10460 | 26 | 11.0±1.0 N·m |
| GFEVT750-200A-36 | 200 | 50kA | 4560 | 18280 | 32 | 11.0±1.0 N·m |
| GFEVT750-225A-36 | 225 | 50kA | 5400 | 22340 | 35 | 11.0±1.0 N·m |
| GFEVT750-250A-36 | 250 | 50kA | 7520 | 32550 | 38 | 11.0±1.0 N·m |
| GFEVT750-315A-36 | 315 | 50kA | 13230 | 58900 | 44 | 11.0±1.0 N·m |
| *GFEVT750-350A-36 | *350 | 50kA | 18145 | 78650 | 48 | 11.0±1.0 N·m |
| *GFEVT750-400A-36 | *400 | 50kA | 17500 | 84000 | 53 | 11.0±1.0 N·m |
| * If there are any requirements, please communicate with the original factory staff first. | ||||||
DC Cold Resistance are measured at <10% of rated current in ambient temperature of 25℃；
GFEVT750-36 High Speed DC Automotive Fuse: 25A-400A 750V Professional Circuit Protection Solution
Product Overview
The GFEVT750-36 is a premium high-speed square-body DC fuse specially designed for automotive and new energy applications, covering a wide current range from 25A to 400A with a rated voltage of 750V DC. As a core component for circuit overcurrent and short-circuit protection, it adopts advanced semiconductor protection technology, featuring ultra-fast fusing speed, strong current-limiting capability, and high breaking capacity, fully meeting the strict safety requirements of electric vehicles (EVs), hybrid vehicles, and related power systems.
This fuse belongs to the aR class of partial-range protection fuses, engineered with a ceramic body and high-quality silver components, ensuring stable performance under extreme operating conditions. It is widely recognized in the new energy automotive industry for its low I²t value, low power loss, and excellent anti-vibration performance, making it the first choice for reliable circuit protection in high-voltage DC systems.
Core Technical Parameters
| Parameter | Specification |
|---|---|
| Model | GFEVT750-36 |
| Rated Voltage | 750V DC |
| Rated Current | 25A, 32A, 40A, 50A, 63A, 80A, 100A, 125A, 160A, 200A, 225A, 250A, 315A, 350A, 400A |
| Breaking Capacity | Max 50kA @750V DC |
| Time Constant | ≤2±1ms |
| Protection Class | aR (Semiconductor Protection) |
| Operating Temperature | -40℃ to 85℃ |
| Installation Torque | 11.0±1.0 N·m |
| Compliance Standards | UL 248.1/UL 248.13, IEC 60269.1/IEC 60269.4, RoHS, REACH |
Key Product Features
1. Ultra-High Speed Fusing & Strong Current Limiting
The GFEVT750-36 high-speed fuse is designed with a precision melting element, delivering ultra-fast fusing response to quickly cut off short-circuit current within milliseconds. Its low I²t characteristic minimizes energy loss during fusing, effectively protecting sensitive automotive electronic components, power batteries, and motor controllers from damage caused by overcurrent faults, greatly improving the safety and stability of the entire vehicle power system.
2. High Breaking Capacity & Reliable Performance
With a maximum breaking capacity of 50kA at 750V DC, this fuse can safely disconnect large short-circuit currents without arc leakage or explosion risks. The ceramic shell and sand-filled structure enhance insulation and heat resistance, enabling stable operation in high-temperature, low-temperature, and high-vibration automotive operating environments. It also boasts superior cycling capability, supporting repeated startup and operation of vehicle power systems.
3. Low Power Loss & High Energy Efficiency
Adopting high-purity silver melting elements and optimized structural design, the GFEVT750-36 fuse achieves extremely low power loss during normal operation, reducing energy consumption of the entire vehicle circuit and improving the energy utilization efficiency of electric vehicles. This design also effectively reduces heat generation, extending the service life of both the fuse and surrounding components.
4. Wide Compatibility & Automotive-Grade Durability
Tailored for automotive and new energy scenarios, this fuse has excellent anti-vibration performance (withstanding acceleration above 20g), adapting to the complex vibration environment during vehicle driving. It complies with international automotive safety standards and environmental protection certifications, ensuring full compatibility with pure electric vehicles, hybrid vehicles, EV charging equipment, supercapacitor modules, and energy storage systems.
Main Application Scenarios
- Electric Vehicle Power Systems: Protecting vehicle drive motors, battery management systems (BMS), and high-voltage distribution boxes;
- Hybrid Vehicle Circuits: Safeguarding hybrid power control units and high-voltage DC circuits;
- EV Charging Equipment: Overcurrent protection for DC fast chargers and charging piles;
- Energy Storage Systems: Short-circuit backup protection for energy storage modules and power conversion devices;
- Other DC Systems: Rail transit, marine DC circuits, and industrial semiconductor power equipment.
Product Advantages Compared to Ordinary Fuses
Unlike ordinary low-voltage fuses, the GFEVT750-36 750V DC high-speed automotive fuse is specially developed for high-voltage DC scenarios, solving the problem of difficult arc extinguishing in DC circuits. Its automotive-grade manufacturing process and strict quality control ensure higher reliability and longer service life than industrial fuses. The full range of current specifications (25A-400A) meets the protection needs of different power components in electric vehicles, providing a one-stop circuit protection solution for automotive manufacturers and maintenance providers.
Installation & Maintenance Notes
- Install the fuse in accordance with the specified torque (11.0±1.0 N·m) to ensure good electrical contact;
- Do not replace the fuse with load under normal circumstances to avoid electric shock or short circuit;
- Regularly check the fuse for mechanical damage, oxide layer on conductive parts, and replace damaged fuses in time;
- The fuse is suitable for use at altitudes below 4500m, and parameter correction is required for high-altitude applications.
Conclusion
The GFEVT750-36 25A-400A 750V DC high-speed automotive fuse is a high-performance, high-reliability circuit protection component tailored for the new energy automotive industry. With its ultra-fast fusing speed, high breaking capacity, and wide application range, it provides comprehensive safety protection for high-voltage DC circuits of electric vehicles and related equipment. Compliant with international standards and featuring automotive-grade quality, it is an ideal choice for manufacturers, engineers, and maintenance personnel seeking reliable high-voltage DC fuse solutions.