Description
GFEVT500-B-43E High Speed Fuse – 50A–630A 500V DC Fuse
The GFEVT500-B-43E is a professional high-speed semiconductor fuse designed for 500V DC power systems. It provides reliable ultra-fast overcurrent and short-circuit protection across a current range of 50A to 630A, making it widely used in electric vehicles, energy storage, inverters, and industrial power equipment.
Key Specifications
- Model: GFEVT500-B-43E
- Rated Voltage: 500V DC
- Rated Current: 50A – 630A
- Protection Class: aR (semiconductor protection)
- Operation Type: High-speed / Fast-acting
- Body Style: Square compact structure
- Standards: IEC 60269, UL 248, RoHS compliant
Core Features
1. Ultra-Fast Breaking Speed
As a high-speed aR fuse, the GFEVT500-B-43E responds rapidly to short-circuit faults, minimizing I²t energy let-through. This effectively protects IGBTs, MOSFETs, diodes, and other sensitive power semiconductors from damage.
2. Wide Current Range: 50A–630A
It supports both low and medium-high current circuits, making it highly versatile for different modules in EV, ESS, and power conversion systems.
3. Optimized for 500V DC Systems
The design is specially optimized for 500V DC busbars, with stable arc extinguishing performance and reliable breaking capacity in pure DC environments.
4. High Mechanical & Thermal Stability
- Rugged ceramic housing for high shock and vibration resistance
- Tin-plated copper terminals for low contact resistance and long service life
- Excellent heat dissipation for continuous full-load operation
5. Safe and Reliable Performance
High breaking capacity ensures safe interruption under severe fault conditions. It meets strict automotive and industrial safety requirements for stable long-term use.
Typical Applications
- Electric vehicle (EV) battery management and power distribution
- Energy storage systems (ESS) and lithium battery packs
- Solar and wind inverters, DC/DC converters
- Industrial power supplies and UPS systems
- Automotive control units and charging equipment
- Semiconductor drive and protection circuits
Why Choose GFEVT500-B-43E?
- True high-speed aR semiconductor protection
- 50A to 630A full-range coverage
- 500V DC rated for new energy applications
- Compact square design for easy PCB and rack mounting
- High reliability for automotive and industrial mass production
For engineers and designers seeking a stable 500V DC high speed fuse, the GFEVT500-B-43E provides superior performance in circuit protection for electric vehicles, energy storage, and power electronics.
GFEVT500-B-43E High Speed Fuse – 50A–630A 500V DC 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)
GFEVT500-XXXB-43E
GFEVT500-XXXBN-43E
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 | Size | Average @ 50KA/500Vdc | Power Loss (W) 1.0In | |
|---|---|---|---|---|---|
| Amps | A²s Melting | A²s Clearing | |||
| GFEVT500-50B-43E | 50 | 01* | 126 | 995 | 9 |
| GFEVT500-63B-43E | 63 | 01* | 212 | 1,679 | 13 |
| GFEVT500-80B-43E | 80 | 01* | 345 | 2,699 | 17 |
| GFEVT500-100B-43E | 100 | 01* | 640 | 5,020 | 19 |
| GFEVT500-125B-43E | 125 | 01* | 1,135 | 8,940 | 23 |
| GFEVT500-160B-43E | 160 | 01* | 1,920 | 15,135 | 29 |
| GFEVT500-200B-43E | 200 | 01* | 3,480 | 27,383 | 36 |
| GFEVT500-250B-43E | 250 | 01* | 5,770 | 45,210 | 44 |
| GFEVT500-315B-43E | 315 | 01* | 9,760 | 76,920 | 55 |
| GFEVT500-350B-43E | 350 | 01* | 13,840 | 108,450 | 58 |
| GFEVT500-400B-43E | 400 | 01* | 19,280 | 151,350 | 65 |
| GFEVT500-450B-43E | 450 | 01* | 25,900 | 203,500 | 72 |
| GFEVT500-500B-43E | 500 | 01* | 33,450 | 262,500 | 80 |
| *GFEVT500-550B-43E | *550 | 01* | 45,040 | 352,800 | 85 |
| *GFEVT500-630B-43E | *630 | 01* | 65,500 | 497,500 | 97 |
| *: If there are any requirements, please communicate with the original factory staff first. Optional base indicator, the standard product is the “Default” configuration. Default: B – with fuse indication, e.g.: GFEVT500-400B-43E Optional: BN – without fuse indication, e.g.: GFEVT500-400BN-43E |
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