GFEVF750‑Series North‑American Style aR Semiconductor DC Power Fuse 700‑750VDC 35‑800A

GFEVF750‑Series North‑American Style aR Semiconductor DC Power Fuse 700‑750VDC 35‑800A

GFEVF750‑Series North‑American Style aR Semiconductor DC Power Fuse 700‑750VDC 35‑800A is north‑american standard high‑speed aR‑class semiconductor DC power fuse. Rated 700‑750VDC with max 50kA breaking capacity, time constant 2.5±0.5 ms. Features low arc‑voltage, low I²t let‑through energy and low watt losses. Supports parallel installation for higher ampacity. Complies with UL‑248‑13, IEC 60269‑4, CE and RoHS. Suitable for energy‑storage battery‑pack, DC drives, reduced‑voltage starters, power converters, rectifiers and DC relay backup protection.

GFEVF750-Series.-35-800A-750Vdc2

Key Features

• Model Series: GFEVF750 North‑American Style aR Semiconductor DC Power Fuse
• Rated Voltage: 700‑750 VDC
• Current Range: 35A‑800A, Operation Class: aR (semiconductor protection)
• Max Breaking Capacity: 50kA @750VDC
• Time Constant: 2.5±0.5 ms
• Low arc‑voltage, low energy let‑through I²t characteristics
• Low watt losses, superior cycling capability
• Multiple body diameters: 20R / 26R / 38R / 51R bolt‑on versions
• Parallel mounting 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

Part Number List & Electrical Parameters

Application Scenarios

GFEVF750‑Series North‑American Style aR Semiconductor DC Power Fuse 700‑750VDC 35‑800A is dedicated for high‑voltage DC new‑energy systems: energy‑storage battery‑pack, DC drives, reduced‑voltage starters, 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.

Câu hỏi thường gặp

Q: What rating for GFEVF750‑Series North‑American Style aR Semiconductor DC Power Fuse 700‑750VDC 35‑800A?
A: Rated 700‑750VDC, current range 35‑800A, aR semiconductor‑protection class, max breaking capacity up to 50kA@750VDC.

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 body diameters are available?
A: Multiple bolt‑on body diameters:20R,26R,38R,51R for different current grades.

Q: What standards does GFEVF750‑Series comply with?
A: UL‑248‑13, IEC60269‑4, CE, RoHS compliant; REACH document available on request.

Q: Main application scenarios for GFEVF750‑Series?
A: Energy‑storage battery‑pack, DC drives, reduced‑voltage starters, power converters, rectifiers and DC relay backup semiconductor short‑circuit protection.