Description
GFEVF/500 High-Speed Fast Semiconductor Fuse: 35A-800A 500V Professional Circuit Protection Solution
Product Overview
The GFEVF/500 high-speed fuse is a professional fast-acting semiconductor protection fuse specially designed for high-power DC and AC circuit scenarios, with a rated voltage of 500V and a wide current range covering 35A to 800A. Adopting advanced aR semiconductor protection technology, this fuse features ultra-fast fusing speed, excellent current-limiting performance, and high breaking capacity, which can quickly cut off fault current in milliseconds to protect sensitive semiconductor components, power modules and high-voltage circuits from damage caused by short circuits and overcurrent faults.
Built with high-strength ceramic shell, high-purity silver melt element and quartz sand filling structure, the GFEVF/500 series fuse has outstanding heat resistance, insulation performance and anti-vibration capability, complying with international IEC, UL and RoHS standards. It is widely used in new energy vehicles, power semiconductor equipment, energy storage systems, industrial power supplies and other fields, becoming a core component for reliable circuit protection in high-power electrical systems.
Core Technical Parameters
| Parameter | Specification |
|---|---|
| Model | GFEVF/500 |
| Rated Voltage | 500V (AC/DC) |
| Rated Current | 35A, 40A, 50A, 63A, 80A, 100A, 125A, 160A, 200A, 250A, 315A, 350A, 400A, 500A, 630A, 800A |
| Protection Class | aR (Semiconductor Partial-Range Protection) |
| Breaking Capacity | Max 50kA @500V |
| Time Constant | ≤2.5±0.5ms |
| Operating Temperature | -40℃ to 85℃ |
| Installation Type | Bolt-On Fixed |
| Compliance Standards | IEC 60269-1/60269-4, UL 248, RoHS, REACH |
Key Product Features
1. Ultra-Fast Fusing & Superior Current-Limiting Performance
As a fast semiconductor fuse, the GFEVF/500 adopts precision-designed melt elements, with an ultra-short fusing response time, which can quickly disconnect fault current before it reaches the peak value. Its extremely low I²t value minimizes the energy released during fusing, effectively protecting IGBTs, MOSFETs, diodes and other sensitive semiconductor devices, avoiding irreversible damage to core components and reducing equipment maintenance costs.
2. High Breaking Capacity & Safe Operation Guarantee
With a maximum breaking capacity of 50kA under 500V voltage, this fuse can safely and reliably cut off large short-circuit currents without generating electric arcs, explosions or other safety hazards. The high-density ceramic shell and high-temperature resistant filling material ensure stable performance under extreme working conditions such as high temperature, low temperature and strong vibration, and can adapt to harsh industrial and automotive application environments.
3. Wide Current Range & Strong Compatibility
The GFEVF/500 series covers a current range from 35A to 800A, which can meet the circuit protection needs of different power levels of equipment. The standardized bolt-on installation design is compatible with most semiconductor power equipment, new energy vehicle high-voltage boxes, energy storage converters and industrial power supply systems, realizing flexible configuration and convenient replacement for different scenarios.
4. Low Power Loss & Long Service Life
Adopting high-purity silver melt elements and optimized structural design, this high-speed fuse has extremely low contact resistance and power loss during normal operation, effectively reducing heat generation and energy consumption of the circuit. It has excellent anti-aging performance and cycle stability, can withstand frequent current fluctuations, and has a longer service life than ordinary fuses, ensuring long-term stable operation of the equipment.
5. Automotive & Industrial Grade Quality
The GFEVF/500 fuse is manufactured in strict accordance with automotive and industrial grade quality control standards, passing a series of reliability tests such as vibration test, temperature cycle test and overload test. It is non-polluting and complies with RoHS and REACH environmental protection directives, meeting the high requirements of green manufacturing and safe operation in the new energy and industrial fields.
Main Application Scenarios
- New Energy Vehicle Power Systems: Protection of vehicle motor controllers, battery management systems (BMS), high-voltage distribution boxes, and on-board chargers;
- Power Semiconductor Equipment: Overcurrent protection for IGBT modules, frequency converters, inverters, rectifiers and welding equipment;
- Energy Storage Systems: Short-circuit protection for energy storage battery packs, photovoltaic inverters, energy storage converters and UPS power supplies;
- Industrial Power Supplies: Circuit protection for high-power industrial power supplies, electroplating power supplies, and communication base station power supplies;
- Other Fields: Rail transit electrical systems, marine electrical equipment, and new energy charging piles.
Advantages Over Ordinary Fuses
Compared with conventional low-speed fuses, the GFEVF/500 high-speed semiconductor fuse has obvious technical advantages. Ordinary fuses have a slow fusing speed and cannot protect sensitive semiconductor components, while this product can achieve millisecond-level fusing, with strong current-limiting capability, which is specially designed for semiconductor equipment protection. In addition, it has higher breaking capacity and better environmental adaptability, and can operate stably in high-voltage and high-power scenarios, which is irreplaceable by ordinary fuses.
Installation & Precautions
- Install the fuse according to the specified torque to ensure good electrical contact and avoid poor contact caused by loose installation;
- Do not install or replace the fuse with load to prevent electric shock or short circuit accidents;
- Regularly check the appearance of the fuse for cracks, deformation and other damages, and replace the fuse with the same model and specification in time if it is blown;
- It is suitable for use at an altitude below 4500m. For high-altitude applications, the derating use shall be carried out according to the standard requirements.
Conclusion
The GFEVF/500 35A-800A 500V high-speed fast semiconductor fuse is a high-performance, high-reliability circuit protection component tailored for high-power and high-sensitivity electrical systems. With ultra-fast fusing speed, high breaking capacity, wide current range and industrial-grade quality, it provides comprehensive and reliable protection for semiconductor equipment, new energy vehicles, energy storage systems and other fields. It is the preferred choice for engineers and equipment manufacturers to solve high-voltage and high-power circuit overcurrent protection problems.
GFEVF/500 35A-800A 500V High-Speed Fast Semiconductor Fuse
1. Dimensions (mm)
| S. | Current | A±1.5 | B±1 | C±1 | D±1.5 | E±0.5 | F±0.5 | H±1 | G±0.5 |
|---|---|---|---|---|---|---|---|---|---|
| 20R | 35-60A | 81 | 20 | 40 | 60.5 | 8.5 | 15 | 3 | 13 |
| 26R | 70-150A | 92 | 26 | 44 | 68.5 | 8.5 | 20 | 3 | 13 |
| 31R | 125-250A | 92 | 31 | 46 | 72.5 | 8.5 | 25 | 6 | 12.5 |
| 38R | 225-450A | 110 | 38 | 53 | 81.5 | 10.5 | 25 | 6 | 20 |
| 51R | 450-800A | 110 | 51 | 53 | 81.5 | 10.5 | 40 | 6 | 20 |
2. Description
- Design For DC Applications
- Excellent DC Performance
- Low arc voltage and low energy let-through (I²t)
- Superior cycling capability
- Low Watt Losses
Standards / Approvals:
- Refer To UL248.13 or IEC60269.4
- Approvals: CE
- RoHS Compliant
Features & Benefits:
- Higher voltage rating provides overall system efficiency using smaller, more economical conductors.
- Up to ten times faster opening under high fault current conditions ensures reliable protection.
- Can be applied in parallel to realize greater ampacity within sizing guidelines.
- Excellent resistance to voltaic impingement and environmental temperature tolerance.
- Superior mechanical vibration and impact resistance.
Fuse Ratings
| Rated Current | Catalog no. | Average @50KA/500Vdc | Power Loss W | Approvals | |
|---|---|---|---|---|---|
| Melting A²s | Clearing A²s | ROHS | |||
| 20 mm diameter case | |||||
| 35A | GFEVF500-35A-20R | 49 | 509 | 8 | * |
| 40A | GFEVF500-40A-20R | 111 | 1085 | 8 | * |
| 50A | GFEVF500-50A-20R | 231 | 2624 | 10 | * |
| 60A | GFEVF500-60A-20R | 305 | 3063 | 12 | * |
| 26 mm diameter case | |||||
| 70A | GFEVF500-70A-26R | 392 | 2194 | 14 | * |
| 80A | GFEVF500-80A-26R | 571 | 3413 | 16 | * |
| 90A | GFEVF500-90A-26R | 673 | 3901 | 16 | * |
| 100A | GFEVF500-100A-26R | 889 | 4876 | 20 | * |
| 125A | GFEVF500-125A-26R | 1764 | 10051 | 25 | * |
| 150A | GFEVF500-150A-26R | 2412 | 12075 | 28 | * |
| 31 mm diameter case | |||||
| 125A | GFEVF500-125A-31R | 1498 | 6122 | 22 | * |
| 150A | GFEVF500-150A-31R | 2099 | 8045 | 26 | * |
| 175A | GFEVF500-175A-31R | 2714 | 10844 | 34 | * |
| 200A | GFEVF500-200A-31R | 4050 | 14867 | 40 | * |
| 225A | GFEVF500-225A-31R | 8650 | 33098 | 45 | * |
| 250A | GFEVF500-250A-31R | 9094 | 51160 | 52 | * |
| 38 mm diameter case | |||||
| 225A | GFEVF500-225A-38R | 5549 | 30673 | 42 | * |
| 250A | GFEVF500-250A-38R | 7862 | 44372 | 48 | * |
| 275A | GFEVF500-275A-38R | 9683 | 55864 | 54 | * |
| 300A | GFEVF500-300A-38R | 12230 | 68624 | 58 | * |
| 325A | GFEVF500-325A-38R | 17098 | 87916 | 60 | * |
| 350A | GFEVF500-350A-38R | 16968 | 100456 | 65 | * |
| 400A | GFEVF500-400A-38R | 23922 | 133253 | 70 | * |
| 450A | GFEVF500-450A-38R | 33000 | 186976 | 75 | * |
| 51 mm diameter case | |||||
| 450A | GFEVF500-450A-51R | 25688 | 134620 | 70 | * |
| 500A | GFEVF500-500A-51R | 42515 | 205322 | 82 | * |
| 550A | GFEVF500-550A-51R | 53540 | 230695 | 88 | * |
| 600A | GFEVF500-600A-51R | 68133 | 263886 | 110 | * |
| 630A | GFEVF500-630A-51R | 73815 | 319260 | 120 | * |
| 700A | GFEVF500-700A-51R | 145880 | 515450 | 135 | * |
| 800A | GFEVF500-800A-51R | 161840 | 565500 | 150 | * |