GFEVF300‑series north‑american style semiconductor dc power fuse 300VDC 35‑2500A aR class protection
GFEVF300‑series north‑american style semiconductor DC power fuse, 300VDC 35‑2500A, aR class, 50kA interrupting capacity for battery pack, DC drive and power converter protection.
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GFEVF300 North American Style aR Semiconductor DC Fuse 250-300VDC 35-2500A
GFEVF300 North American Style aR Semiconductor DC Fuse 250-300VDC 35-2500A is north-american standard high-speed semiconductor DC power fuse. Operation class aR for semiconductor device short-circuit protection. Rated 250‑300VDC, max 50kA breaking capacity, low arc‑voltage and low let‑through I²t value. Supports parallel connection for higher ampacity. Complies with UL‑248, IEC 60269‑4, CE and RoHS. Widely used for battery pack, DC drives, power converters, rectifiers and DC relay backup protection.</p>
connection for higher ampacity. Complies with UL‑248‑13, IEC 60269‑4, CE and RoHS. Widely used for battery pack, DC drives, power converters, rectifiers and DC relay backup protection.
Key Features
- Model Series: GFEVF300 north‑american style semiconductor DC power fuse
- Rated Voltage: 250‑300 VDC
- Current Range: 35A‑2500A, Operation Class: aR
- Max Breaking Capacity: 50kA @300VDC
- Time Constant: 2.5±0.5 ms
- Low arc‑voltage, low energy let‑through I²t characteristics
- Low watt losses, superior cycling capability
- Parallel installation permitted for higher ampacity within dimensional limits
- High mechanical shock & vibration resistance ≥20g
- Compliant: UL‑248‑13, IEC 60269‑4, CE, RoHS; REACH available upon request
General Technical Specifications
| Product Series | GFEVF300‑Series North‑American Style Semiconductor DC Power Fuse |
| Rated Voltage | 250‑300 V DC |
| Rated Current Range | 35A‑2500A (aR operation class) |
| Max Breaking Capacity | 50kA @300VDC |
| Time Constant | 2.5±0.5 ms |
| Vibration Resistance | ≥20g |
| Standards Compliance | UL‑248‑13, IEC60269‑4, CE, RoHS |
| Operating Temperature | ‑5℃ ~ +40℃(regular);‑40℃~+85℃(allowable) |
Part Number List & Electrical Parameters
| Rated Current | Pre‑arc A²s | Clearing A²t | Power Loss(W) |
| 35A | 50 | 230 | 4.2 |
| 40A | 60 | 310 | 5.2 |
| 45A | 80 | 390 | 5.7 |
| 50A | 100 | 520 | 6.0 |
| 60A | 140 | 740 | 8.1 |
| 70A | 330 | 1400 | 7.2 |
| 80A | 430 | 1850 | 8.1 |
| 90A | 570 | 2450 | 9.0 |
| 100A | 740 | 3150 | 10.0 |
| 125A | 1130 | 4850 | 12.5 |
| 150A | 1620 | 6950 | 15.5 |
| 175A | 2170 | 9300 | 18.5 |
| 200A | 2790 | 12000 | 22 |
| 225A | 3210 | 14700 | 24 |
| 250A | 3960 | 18100 | 27 |
| 275A | 4720 | 21600 | 31 |
| 300A | 6000 | 27300 | 32 |
| 350A | 10600 | 48600 | 39 |
| 400A | 14500 | 66100 | 44 |
| 450A | 22100 | 101000 | 49 |
| 500A | 28000 | 128000 | 54 |
| 600A | 41100 | 188000 | 62 |
| 700A | 48800 | 190000 | 72 |
| 800A | 59000 | 230000 | 84 |
| 1000A | 94000 | 360000 | 100 |
| 1200A | 922000 | 750000 | 103 |
| 1500A | 120000 | 880000 | 140 |
| 1600A | 160000 | 1200000 | 140 |
| 2000A | 320000 | 2300000 | 151 |
| 2500A | 670000 | 4700000 | 163 |
Application Scenarios
GFEVF300‑series north‑american style semiconductor dc power fuse 300VDC 35‑2500A aR class is designed for semiconductor‑related DC‑system protection: energy‑storage battery‑pack, DC drives, power converters, rectifier equipment and DC relay backup protection. aR‑class high‑speed characteristic provides reliable short‑circuit protection for power semiconductors under heavy‑fault‑current conditions.
Installation & Operating Notes
- Bolt‑on mounting type; apply proper bolt torque to avoid poor contact and over‑heating risk.
- Recommended continuous operating current ≤75% of fuse rated‑current; apply temperature‑derating factor for ambient temperature over 40℃.
- For closed‑box / high‑altitude installation (>2000m), perform rated‑current derating in accordance with datasheet requirements.
- Parallel mounting is allowed only within dimensional and specification guidelines for higher ampacity.
- Do NOT replace fuse under live DC load unless equipped with certified load‑break switchgear.
- Replace fuse immediately if mechanical damage, crack or deformation occurs on fuse body.
- Additional reliability validation test shall be conducted for extremely high‑vibration working environments.
Packing & Supply
Standard bulk package. Sample testing support, OEM customization, stable mass‑volume supply for energy‑storage, power‑converter and new‑energy equipment manufacturers. REACH declaration available upon customer request.
अक्सर पूछे जाने वाले प्रश्न
Q: What rating for GFEVF300‑series north‑american style semiconductor dc power fuse 300VDC 35‑2500A aR class?
A: Rated 250‑300VDC, current range 35‑2500A, aR semiconductor‑protection class, max breaking capacity up to 50kA@300VDC.
Q: What is aR‑class operation for this fuse?
A: aR class is semiconductor‑protecting high‑speed fuse class, designed for fast short‑circuit protection of power semiconductor devices.
Q: What standards does GFEVF300‑series comply with?
A: UL‑248‑13, IEC60269‑4, CE, RoHS compliant; REACH document available on request.
Q: Main application scenarios for GFEVF300‑series?
A: Energy‑storage battery‑pack, DC drives, power converters, rectifiers and DC relay backup semiconductor short‑circuit protection.
