Description
500V DC Fast-Acting Fuse GFEVT500-A-74E 500A-1800A for EV & ESS
500V DC high speed automotive fuse GFEVT500-A-74E, 500A-1800A, low watt loss, vibration-resistant, UL/IEC approved, for EV battery packs, PCS, PDU protection, GFEFUSE factory direct.
GFEVT500-A-74E 500A-1800A 500V DC High Speed Automotive Fuse: Core Protection for New Energy
With the rapid development of electric vehicles (EVs) and energy storage systems (ESS), safe protection for DC circuits has become a critical technical bottleneck. The GFEVT500-A-74E series 500V DC high-speed fuses, developed and manufactured by EssFuse (Dongguan Gongfu Electronics), are specially designed for high-voltage DC scenarios such as new energy vehicles, energy storage, and DC charging piles. Covering a full current range from 500A to 1800A, they are the ideal protection devices for high-voltage DC circuits.
1. Core Specifications
The GFEVT500-A-74E series features a #3 square bolt-mount structure, optimized for DC applications with key electrical parameters:
- Rated Voltage: 500V DC (pure DC dedicated)
- Rated Current: 500A, 630A, 700A, 800A, 1000A, 1250A, 1500A, 1800A
- Interrupting Rating: Max 50kA @ 500V DC
- Time Constant: ≤5ms (suitable for purely inductive circuits)
- Class: aR (fast-acting fuse for semiconductor protection)
- Certifications: UL 248.1/13, IEC 60269.1/4, RoHS, IATF16949 automotive-grade quality system
2. Key Product Advantages
Ultra-Fast Breaking, Millisecond-Level Protection
Breaking speed is 10x faster than ordinary fuses under fault current. It cuts off faulty circuits within ≤5ms, effectively protecting sensitive electronic components like battery packs, motor controllers, and PCS, preventing equipment burnout and safety incidents caused by short circuits.
Low Power Consumption, Reduced System Loss
Low watt loss design minimizes circuit heating and energy consumption, improving EV range and ESS efficiency, ideal for frequent charge-discharge cycles.
Strong Vibration & Temperature Resistance
Engineered for harsh automotive and industrial environments, it offers excellent resistance to mechanical vibration, voltage surges, and wide temperature variations, ensuring stable operation in bumpy and extreme temperature conditions.
High Cycle Life & Reliability
Superior cycling performance meets long-term, frequent charge-discharge protection demands in EVs and ESS, reducing maintenance costs and enhancing overall system reliability.
3. Main Application Scenarios
GFEVT500-A-74E series is widely used in new energy high-voltage DC protection:
- Electric Vehicles (EV/HEV): Battery packs, motor controllers, PDUs, high-voltage distribution boxes
- Energy Storage Systems (ESS): Power conversion systems (PCS), battery clusters, BMS
- DC Charging Piles: Main circuits, charging guns, power module protection
- Industrial DC Equipment: High-voltage DC relays, PV inverters, DC motor drives
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)
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 | |||||
| Flush-end contact | GFEVT500-500A-74E | 500A | 3# | 12,290 | 85,500 | 95 |
| GFEVT500-550A-74E | 550A | 3# | 16,900 | 121,500 | 105 | |
| GFEVT500-630A-74E | 630A | 3# | 26,970 | 189,000 | 115 | |
| GFEVT500-700A-74E | 700A | 3# | 38,715 | 270,000 | 120 | |
| GFEVT500-800A-74E | 800A | 3# | 60,450 | 418,500 | 130 | |
| GFEVT500-900A-74E | 900A | 3# | 87,000 | 603,000 | 138 | |
| GFEVT500-1000A-74E | 1000A | 3# | 121,800 | 850,500 | 145 | |
| GFEVT500-1100A-74E | 1100A | 3# | 165,300 | 1,170,000 | 165 | |
| GFEVT500-1250A-74E | 1250A | 3# | 252,300 | 1,755,000 | 180 | |
| GFEVT500-1400A-74E | 1400A | 3# | 322,500 | 2,205,000 | 190 | |
| * GFEVT500-1500A-74E | * 1500A | 3# | 400,200 | 2,790,000 | 200 | |
| * GFEVT500-1600A-74E | * 1600A | 3# | 505,600 | 3,510,000 | 230 | |
| * GFEVT500-1800A-74E | * 1800A | 3# | 765,600 | 4,925,000 | 260 | |