GFEVT750-36 Series 750Vdc High-Speed DC Fuse | 25A-315A aR Class
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GFEVT750-36 Series 750Vdc High-Speed Fast-Acting DC Fuse (25A-315A, aR Class)
The GFEVT750-36 series is a square-body high-speed DC fuse link dedicated to 750Vdc power systems. Covering 25A to 315A rated current with 50kA maximum interrupting capacity, it features low I²t, strong current-limiting capability and low watt loss. As an aR class partial-range protection fuse, it is widely applied in EV drive power systems, supercapacitor modules, EV charging equipment and energy storage systems.
GFEVT750-36-Series-25A-315A-750VdcHigh-speed fuse
Principales caractéristiques et avantages
- Rated voltage: 750Vdc, purpose-built for DC applications
- Rated current range: 25A – 315A (350A / 400A available on request)
- Maximum interrupting capacity: 50kA @ 750Vdc
- Circuit time constant: ≤ 2±1ms
- Protection class: aR (partial-range short-circuit protection)
- Low I²t values and strong current-limiting performance
- Low power loss and superior cycling capability
- Ceramic body with fiberglass structure for high reliability
Spécifications générales
| Paramètre | Valeur | Remarques |
|---|---|---|
| Product Series | GFEVT750-36 | Square body fuse link |
| Rated Voltage (Ue) | 750 Vcc | DC application only |
| Rated Current (In) | 25A – 315A | 350A / 400A custom options |
| Capacité d'interruption | Max. 50 kA | @ 750Vdc |
| Constante de temps | ≤ 2±1 ms | DC circuit condition |
| Classe de protection | aR | Partial-range high-speed fuse |
| Couple de serrage | 11.0 ± 1.0 N·m | All current ratings |
| Courant de coupure minimal | 3.0 × In | Curve tolerance ±15% |
Dimensions
| Total Length | Largeur du corps | Taille du corps | Épaisseur terminale | Terminal Width (Max) |
|---|---|---|---|---|
| 95 ± 1.5 mm | 36.3 ± 1.0 mm | 74 ± 1.5 mm | 14 ± 0,5 mm | 540 mm |
* 2D / 3D dimension drawings available upon request. Contact our engineering team for detailed files.
Electrical Ratings & Characteristics
| Numéro de pièce | Courant nominal (A) | Capacité de rupture | A²s Melting I²t | A²t Clearing I²t @50kA | Power Loss (W) @ 100% In |
|---|---|---|---|---|---|
| GFEVT750-25A-36 | 25 | 50 kA | 32 | 96 | 8 |
| GFEVT750-32A-36 | 32 | 50 kA | 46 | 138 | 9 |
| GFEVT750-40A-36 | 40 | 50 kA | 81 | 254 | 10 |
| GFEVT750-50A-36 | 50 | 50 kA | 148 | 490 | 13 |
| GFEVT750-63A-36 | 63 | 50 kA | 310 | 1070 | 15 |
| GFEVT750-80A-36 | 80 | 50 kA | 535 | 1890 | 18 |
| GFEVT750-100A-36 | 100 | 50 kA | 870 | 3140 | 20 |
| GFEVT750-125A-36 | 125 | 50 kA | 1450 | 5465 | 24 |
| GFEVT750-160A-36 | 160 | 50 kA | 2740 | 10460 | 26 |
| GFEVT750-200A-36 | 200 | 50 kA | 4560 | 18280 | 32 |
| GFEVT750-225A-36 | 225 | 50 kA | 5400 | 22340 | 35 |
| GFEVT750-250A-36 | 250 | 50 kA | 7520 | 32550 | 38 |
| GFEVT750-315A-36 | 315 | 50 kA | 13230 | 58900 | 44 |
| *GFEVT750-350A-36 | *350 | 50 kA | 18145 | 78650 | 48 |
| *GFEVT750-400A-36 | *400 | 50 kA | 17500 | 84000 | 53 |
* Custom current ratings available; please consult factory before ordering. DC cold resistance measured at <10% rated current under 25°C ambient temperature.
Applications
- Electric vehicle (EV) and hybrid EV drive power systems
- Supercapacitor modules and battery energy storage systems
- DC fast charging equipment and EV charging stations
- Rail transit and marine electrical systems
- Short-circuit backup protection for power distribution and conductors
Normes et homologations
- Designed and tested per UL 248.1 / UL 248.13
- Compliant with IEC 60269-1 / IEC 60269-4
- Conforme à la directive RoHS
- REACH declaration available upon request
Conditions de fonctionnement et règles de déclassement
Température ambiante
- Normal operating range: -5°C ~ +40°C (no derating required)
- Allowable operating range: -40°C ~ +85°C (derating applies above 40°C)
- Recommended continuous load: ≤ 75% of rated current for long-term reliability
- Product storage temperature: -40°C ~ +120°C; packaged storage: -40°C ~ +80°C
Altitude
- Normal operation: up to 2000m above sea level
- Allowable operation: 2000m ~ 4500m
- 2% – 5% derating per 1000m elevation for enclosed installations
- Insulation strength decreases 12% – 15% per 1000m above 2000m
Mechanical & Installation
- Vibration resistance: ≥ 20g acceleration
- Supports vertical, horizontal and inclined installation
Foire aux questions (FAQ)
Q: Is the GFEVT750-36 series suitable for DC fast charging systems?
A: Yes. This series is purpose-built for 750Vdc applications with 50kA breaking capacity, making it ideal for DC fast chargers, EV powertrains and energy storage systems.
Q: What does aR class mean for this fuse?
A: aR indicates a partial-range high-speed fuse. It delivers fast short-circuit protection with low I²t and strong current-limiting capability, serving as backup protection against short-circuit faults.
Q: What is the required installation torque for this fuse series?
A: All current ratings in the GFEVT750-36 series require an installation torque of 11.0 ± 1.0 N·m to ensure stable electrical contact and consistent thermal performance.
Q: Are 350A and 400A versions available in the same body size?
A: Yes, 350A and 400A are available as custom options within the same 36mm body series. Please contact our sales team to confirm lead time and full specifications.
Q: What certifications does this DC fuse carry?
A: The series is designed in accordance with UL 248.1 / 248.13 and IEC 60269-1 / 60269-4 standards. It is RoHS compliant, and REACH declarations are available on request.
