Description
GFEVT500-74E Square High Speed Fuse 500A-1800A (500V) DC fuse links
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 | GFEVT500-500B-74E | 500A | 3# | 12,290 | 85,500 | 95 |
| GFEVT500-550B-74E | 550A | 3# | 16,900 | 121,500 | 105 | |
| GFEVT500-630B-74E | 630A | 3# | 26,970 | 189,000 | 115 | |
| GFEVT500-700B-74E | 700A | 3# | 38,715 | 270,000 | 120 | |
| GFEVT500-800B-74E | 800A | 3# | 60,450 | 418,500 | 130 | |
| GFEVT500-900B-74E | 900A | 3# | 87,000 | 603,000 | 138 | |
| GFEVT500-1000B-74E | 1000A | 3# | 121,800 | 850,500 | 145 | |
| GFEVT500-1100B-74E | 1100A | 3# | 165,300 | 1,170,000 | 165 | |
| GFEVT500-1250B-74E | 1250A | 3# | 252,300 | 1,755,000 | 180 | |
| GFEVT500-1400B-74E | 1400A | 3# | 322,500 | 2,205,000 | 190 | |
| * GFEVT500-1500B-74E | * 1500A | 3# | 400,200 | 2,790,000 | 200 | |
| * GFEVT500-1600B-74E | * 1600A | 3# | 505,600 | 3,510,000 | 230 | |
| * GFEVT500-1800B-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 | GFEVT500-500K-74E | 500A | 3# | 12,290 | 85,500 | 95 |
| GFEVT500-550K-74E | 550A | 3# | 16,900 | 121,500 | 105 | |
| GFEVT500-630K-74E | 630A | 3# | 26,970 | 189,000 | 115 | |
| GFEVT500-700K-74E | 700A | 3# | 38,715 | 270,000 | 120 | |
| GFEVT500-800K-74E | 800A | 3# | 60,450 | 418,500 | 130 | |
| GFEVT500-900K-74E | 900A | 3# | 87,000 | 603,000 | 138 | |
| GFEVT500-1000K-74E | 1000A | 3# | 121,800 | 850,500 | 145 | |
| GFEVT500-1100K-74E | 1100A | 3# | 165,300 | 1,170,000 | 165 | |
| GFEVT500-1250K-74E | 1250A | 3# | 252,300 | 1,755,000 | 180 | |
| GFEVT500-1400K-74E | 1400A | 3# | 322,500 | 2,205,000 | 190 | |
| * GFEVT500-1500K-74E | * 1500A | 3# | 400,200 | 2,790,000 | 200 | |
| * GFEVT500-1600K-74E | * 1600A | 3# | 505,600 | 3,510,000 | 230 | |
| * GFEVT500-1800K-74E | * 1800A | 3# | 765,600 | 4,925,000 | 260 | |
The GFEVT500-74E Square High Speed Fuse is an ultra‑fast aR semiconductor fuse designed for heavy‑duty 500V DC systems. Rated 500A–1800A, it provides microsecond‑level short‑circuit protection for electric vehicles (EV), energy storage systems (ESS), solar inverters, and industrial DC power equipment. Its compact square body and high breaking capacity make it ideal for high‑current, high‑reliability applications.
Core Specifications
- Model: GFEVT500-74E
- Current Rating: 500A, 630A, 800A, 1000A, 1250A, 1500A, 1800A
- Voltage Rating: 500V DC
- Protection Class: aR (ultra‑fast semiconductor protection)
- Breaking Capacity: 50kA (DC)
- Body Style: Square, compact high‑dimensional design
- Terminals: Bolt‑down (M10), high‑conductivity copper, tin‑plated
- Arc Extinguishing: High‑purity silica sand filling, forced DC arc quenching
- Certifications: UL 248-1, IEC 60269-4, RoHS compliant
Key Features
✅ Ultra‑Fast aR Protection
Cuts short‑circuit current in ≤10µs; ultra‑low I²t prevents IGBT/MOSFET burnout in EV and ESS power electronics.
✅ 500V DC High‑Current Capacity
Covers 500A–1800A continuous current; optimized for 500V DC battery packs and main DC links.
✅ Square Compact Design
Space‑saving square body; easy installation in tight EV/ESS cabinet layouts.
✅ Superior DC Arc Extinguishing
Filled with high‑purity silica sand; safely quenches sustained DC arcs without re‑ignition.
✅ Low Temperature Rise
High‑grade copper terminals and optimized melt design reduce heat buildup under full load.
✅ Vibration & Environmental Resistance
Reinforced square housing; stable performance in EV/ESS high‑vibration and temperature‑fluctuation environments.
Common Applications
- Electric Vehicles (EV/HEV): Main battery pack, motor controller, OBC, high‑voltage distribution unit
- Energy Storage (BESS): 500V DC battery systems, PCS, combiner boxes
- Solar PV: Large‑scale 500V DC solar inverters and central combiner stations
- Industrial DC: Heavy‑duty rectifiers, DC motor drives, mining machinery power modules
Installation & Torque
- Mounting: Secure via M10 bolt terminals (torque: 12–15 Nm).
- Cable Connection: Use 250–400mm² DC cables; ensure clean, tight contact.
- Orientation: Install vertically or horizontally; avoid covering arc vent areas.
FAQ
What is GFEVT500-74E used for?
It’s a 500A–1800A 500V DC aR high‑speed fuse for EV, ESS, solar, and industrial DC short‑circuit protection.
Is it an aR semiconductor fuse?
Yes, aR ultra‑fast type for protecting IGBT, MOSFET, and power semiconductors.
What’s the breaking capacity?
50kA DC, suitable for high‑current short‑circuit fault cutoff.
Can it be used for 500V battery packs?
Perfect match—500V DC rating, aR protection, 500A–1800A range for EV/ESS main battery circuits.