Description
GFEVT1000-B-43E High Speed Fast-Acting Fuse (50A-400A, 1000V DC, 50KA)
GFEVT1000-B-43E is a premium high-speed aR semiconductor fuse manufactured by EssFuse, designed for robust overcurrent and short-circuit protection in high-voltage DC power electronics.
Key Specifications
- Model: GFEVT1000-B-43E (with indicator); GFEVT1000-BN-43E (without indicator)
- Type: High Speed / Fast-Acting (aR, semiconductor protection)
- Current Rating: 50A, 80A, 100A, 125A, 160A, 200A, 250A, 300A, 350A, 400A
- Voltage: 1000V DC
- Interrupting Capacity: 50KA @ 1000V DC
- Time Constant (L/R): ≤2ms
- Standards: UL248.13, IEC60269-4, RoHS
- Construction: Square bolt-mounted, ceramic body, pure silver element, quartz sand filled
- Dimensions: 138.5 x 43 x 58 mm
Features & Benefits
- Ultra-Fast Protection: Extremely low I²t let-through energy to safeguard IGBTs, MOSFETs, and other sensitive semiconductors.
- High Voltage DC Performance: 1000V DC rating and 50KA interrupting capacity for heavy-duty industrial and EV systems.
- Reliable Design: Bolt-mounted installation ensures secure connection and high thermal stability.
- Low Watt Loss: High efficiency, minimizing heat generation and energy consumption.
- Wide Temperature Range: Operates stably from -40°C to +85°C.
- Optional Indicator: Available with (B) or without (BN) fuse status indicator for easy monitoring.
Typical Applications
- Electric Vehicles (EV/HEV): Battery packs, motor controllers, on-board chargers, inverters
- Energy Storage Systems (ESS): UPS, lithium-ion battery banks, power conversion systems (PCS)
- Renewable Energy: Solar inverters, wind turbine converters, DC microgrids
- Industrial Power Electronics: High-power rectifiers, DC power supplies, traction drives
- High Voltage DC Distribution: Charging stations, industrial DC grids, semiconductor equipment
Why Choose GFEVT1000-B-43E?
As a leading high-voltage DC fuse from EssFuse, the GFEVT1000-B-43E series delivers superior protection for critical 1000V DC circuits. Its combination of high speed, high breaking capacity, and compliance with global standards makes it the preferred choice for engineers and OEMs in the EV, energy storage, and industrial sectors.
GFEVT1000-B-43E High Speed Fuse | 50A-400A 1000V DC 50KA Fast-Acting Fuse
Dimensions (millimeters)
GFEVT1000-B-43E
GFEVT1000-BN-43E
- Description
• Designed specifically for outdoor applications
• Excellent waterproof performance
• Outstanding cycle capability
• Low power consumption
Standards and Certifications
• Refer to UL 248.1 / UL 248.13
• IEC 60269.1/IEC 60269.4
• REACH declaration can be provided upon request
• Complies with RoHS standards - Fuse rating
| Part Number | fuse | size | Averag@50KA/1000Vdc |
Power Loss（W）1.0In | |
| Ampere | A²s Melting | A²s Clearin | |||
| GFEVT1000-50B-43E | 50 | 01* | 137 | 1,000 | 16 |
| GFEVT1000-63B-43E | 63 | 01* | 215 | 1,620 | 19 |
| GFEVT1000-80B-43E | 80 | 01* | 410 | 3,145 | 23 |
| GFEVT1000-100B-43E | 100 | 01* | 740 | 5,645 | 29 |
| GFEVT1000-125B-43E | 125 | 01* | 1,460 | 10,860 | 34 |
| GFEVT1000-160B-43E | 160 | 01* | 2,535 | 19,850 | 41 |
| GFEVT1000-200B-43E | 200 | 01* | 5,070 | 38,200 | 46 |
| GFEVT1000-250B-43E | 250 | 01* | 8,970 | 68,550 | 51 |
| GFEVT1000-315B-43E | 315 | 01* | 18,200 | 142,950 | 61 |
| GFEVT1000-350B-43E | 350 | 01* | 26,400 | 199,500 | 66 |
| GFEVT1000-400B-43E | 400 | 01* | 38,750 | 293,500 | 74 |
| Default: B- with fuse indication, example: GEEVT1000-400 B -43E; Optional: BN- without fuse indication, example: GFEVT1000-400 B N -43E; |
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