Description
GFEVT500-N-74E High‑Speed Fuse – 500A–1800A 500V Fast‑Acting Fuses
The GFEVT500-N-74E is a heavy‑duty high‑speed semiconductor fuse engineered for 500V DC high‑power systems, with a current rating from 500A up to 1800A. As a fast‑acting (aR) fuse, it provides ultra‑quick short‑circuit and overcurrent protection for large semiconductors, electric vehicle powertrains, energy storage systems, and industrial power conversion equipment.
Key Specifications
- Model: GFEVT500-N-74E
- Rated Voltage: 500V DC
- Rated Current: 500A – 1800A
- Protection Type: aR (semiconductor protection)
- Operation Style: Fast‑acting / High‑speed
- Body Style: Square / module type for high power
- Applications: Heavy‑load DC systems, EV, ESS, inverters
Core Features
1. Ultra‑Fast Fault Interruption
The GFEVT500-N-74E offers extremely fast tripping speed to minimize I²t let‑through energy, effectively protecting IGBT, MOSFET, silicon carbide (SiC) modules, and other sensitive power semiconductors from thermal damage during short circuits.
2. High Power Rating: 500A – 1800A
Built for heavy‑current applications, this fuse supports high‑power battery packs, vehicle main loops, energy storage clusters, and large industrial inverters where stable high‑current carrying capacity is required.
3. Optimized for 500V DC Systems
Specifically designed for 500V DC bus systems commonly used in electric vehicles, energy storage stations, and new energy power equipment, with stable arc extinguishing and reliable DC breaking performance.
4. High Breaking Capacity & Safety
Strong short‑circuit breaking ability ensures safe interruption even under extreme fault conditions. The rugged enclosure provides high thermal stability, shock resistance, and vibration resistance for harsh automotive and industrial environments.
5. Reliable Structure & Low Loss
- Low contact resistance for reduced power loss
- High‑grade conductive materials and ceramic enclosure
- Stable performance under long‑term full‑load operation
- Compatible with standard mounting and connection designs
Typical Applications
- Electric vehicle (EV) main battery circuits & power distribution
- Energy storage systems (ESS) & large battery packs
- High‑power inverters & converters
- Industrial semiconductor drive systems
- UPS, data center power supply
- New energy charging and distribution equipment
Why Choose GFEVT500-N-74E?
- True high‑speed aR protection for semiconductors
- 500A to 1800A wide heavy‑current range
- 500V DC rated for modern high‑power systems
- Strong vibration & shock resistance for vehicle use
- Stable, long‑life design for industrial and automotive mass production
If you need a reliable 500V high‑speed fuse for 500A–1800A high‑power circuits, the GFEVT500-N-74E fast‑acting fuse delivers professional protection for electric vehicles, energy storage, and heavy‑duty power systems.
GFEVT500-N-74E High‑Speed Fuse – 500A–1800A 500V Fast‑Acting Semiconductor Fuse
Features & Benefits
- Higher voltage rating provides overall system efficiency using smaller, more economical conductors while meeting the needs of higher voltage.
- Up to ten times faster opening under high fault current conditions helps assure reliable protection of circuits and components.
- Greater ampacity within sizing guidelines.
- Excellent power of resisting voltaic impingement and environmental temperature tolerance.
- Excellent resistance to mechanical vibration and impact resistance.
Dimensions (mm)
Bolted xxxB-74E Dimensions
Customize xxxK-74E Dimensions
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
| Connect | Part No. | Fuse Amps | Size | Average @50KA/500Vdc | Power Loss (W) | |
|---|---|---|---|---|---|---|
| A²s Melting | A²t Clearing | |||||
| Bolted | GFEVT500-500BN-74E | 500A | 3# | 12,290 | 85,500 | 95 |
| GFEVT500-550BN-74E | 550A | 3# | 16,900 | 121,500 | 105 | |
| GFEVT500-630BN-74E | 630A | 3# | 26,970 | 189,000 | 115 | |
| GFEVT500-700BN-74E | 700A | 3# | 38,715 | 270,000 | 120 | |
| GFEVT500-800BN-74E | 800A | 3# | 60,450 | 418,500 | 130 | |
| GFEVT500-900BN-74E | 900A | 3# | 87,000 | 603,000 | 138 | |
| GFEVT500-1000BN-74E | 1000A | 3# | 121,800 | 850,500 | 145 | |
| GFEVT500-1100BN-74E | 1100A | 3# | 165,300 | 1,170,000 | 165 | |
| GFEVT500-1250BN-74E | 1250A | 3# | 252,300 | 1,755,000 | 180 | |
| GFEVT500-1400BN-74E | 1400A | 3# | 322,500 | 2,205,000 | 190 | |
| * GFEVT500-1500BN-74E | * 1500A | 3# | 400,200 | 2,790,000 | 200 | |
| * GFEVT500-1600BN-74E | * 1600A | 3# | 505,600 | 3,510,000 | 230 | |
| * GFEVT500-1800BN-74E | * 1800A | 3# | 765,600 | 4,925,000 | 260 | |
| Connect | Part No. | Fuse Amps | Size | Average @50KA/500Vdc | Power Loss (W) | |
|---|---|---|---|---|---|---|
| A²s Melting | A²t Clearing | |||||
| Customize | GFEVT500-500UN-74E | 500A | 3# | 12,290 | 85,500 | 95 |
| GFEVT500-550UN-74E | 550A | 3# | 16,900 | 121,500 | 105 | |
| GFEVT500-630UN-74E | 630A | 3# | 26,970 | 189,000 | 115 | |
| GFEVT500-700UN-74E | 700A | 3# | 38,715 | 270,000 | 120 | |
| GFEVT500-800UN-74E | 800A | 3# | 60,450 | 418,500 | 130 | |
| GFEVT500-900UN-74E | 900A | 3# | 87,000 | 603,000 | 138 | |
| GFEVT500-1000UN-74E | 1000A | 3# | 121,800 | 850,500 | 145 | |
| GFEVT500-1100UN-74E | 1100A | 3# | 165,300 | 1,170,000 | 165 | |
| GFEVT500-1250UN-74E | 1250A | 3# | 252,300 | 1,755,000 | 180 | |
| GFEVT500-1400UN-74E | 1400A | 3# | 322,500 | 2,205,000 | 190 | |
| * GFEVT500-1500UN-74E | * 1500A | 3# | 400,200 | 2,790,000 | 200 | |
| * GFEVT500-1600UN-74E | * 1600A | 3# | 505,600 | 3,510,000 | 230 | |
| * GFEVT500-1800UN-74E | * 1800A | 3# | 765,600 | 4,925,000 | 260 | |
If there are any requirements, please communicate with the original factory staff first.
I²t 1000Vdc 50kA，T：＜ 5ms；DC allows the maximum voltage：523V