GFEVT2000 Series Square‑Body Fast‑Acting aR DC Fuse 2000VDC 250‑800A

GFEVT2000 Series Square‑Body Fast‑Acting aR DC Fuse 2000VDC 250‑800A is Size 3# square‑body bolt‑mount aR‑class high‑speed DC fuse, engineered for ultra‑high‑voltage heavy‑duty new‑energy DC‑system applications. Rated voltage 2000VDC, max breaking capacity 100kA@2000VDC (Time Constant ≤10‑15ms), minimum breaking current ≥3In. Two mechanical terminal configurations are available: B‑type flat bolted horizontal connection; K‑type customized hook‑fork vertical connection. It features excellent cycling performance, low power loss, strong anti‑arc capability and wide ambient‑temperature adaptability, mechanical shock‑vibration resistance ≥20g. Performance references UL‑248‑1/UL‑248‑13, IEC 60269‑1/IEC 60269‑4, RoHS compliant; REACH document is available upon request. It provides dependable short‑circuit protection for ultra‑high‑voltage energy‑storage cabinets, large‑capacity lithium‑ion battery‑packs and DC relay backup units.

GFEVT2000-Series.-250-800A-2000Vdc

Key Features

• Model Series: GFEVT2000 Square‑Body Fast‑Acting aR DC Fuse
• Rated Voltage: 2000 VDC
• Current Range: 250A‑800A; Operation Class: aR (semiconductor short‑circuit protection)
• Max Breaking Capacity: 100kA @2000VDC (Time Constant ≤10‑15ms)
• Minimum Breaking Current: ≥3 In
• Two interchangeable terminals: B‑flat bolted horizontal; K‑custom hook‑fork vertical
• Outstanding cycling capability & low watt‑loss characteristic
• Ultra‑fast fault‑current interruption, strong anti‑voltaic impingement
• Size 3# square‑body package for high‑voltage cabinet layout optimization
• High shock‑vibration resistance ≥20g, suitable for industrial & high‑voltage new‑energy cabinet environment
• Compliance: Referenced to UL‑248‑1/UL‑248‑13, IEC 60269‑1/IEC 60269‑4, RoHS; REACH on request

General Technical Specifications

Part Number List & Electrical Parameters(Test@2000VDC,100kA,Time‑Constant≤10‑15ms)

Application Scenarios

GFEVT2000 Series Square‑Body Fast‑Acting aR DC Fuse 2000VDC 250‑800A is designed for ultra‑high‑voltage DC new‑energy projects. Suitable for 2000V‑class large‑capacity energy‑storage power‑station cabinets, high‑voltage lithium‑ion battery‑pack protection and DC relay backup short‑circuit protection. aR‑class fast‑acting performance delivers reliable fault‑current protection for power semiconductors and ultra‑high‑voltage DC‑side power components.

Installation & Operating Notes

• Size 3# square‑body construction; select B‑flat bolted or K‑hook‑fork terminal according to cabinet layout. Apply proper bolt torque to prevent bad contact and over‑heating.
• Recommended continuous working current ≤75% of fuse rated‑current. Apply temperature‑derating factor Kt when ambient temperature exceeds +40℃.
• Altitude ≤2000m: no‑derating; closed‑box installation 2000‑4500m: derate 2%‑5% per 1000m elevation. Re‑check insulation clearance per GB/T16935.1 for high‑altitude deployment, especially for 2000VDC high‑voltage application.
• Permits vertical, horizontal, inclined mounting. Avoid gravity‑vibration negative influence over electrical contact performance.
• Forced‑air cooling improves heat dissipation and allowable operating current, refer to Kv correction coefficient.
• Never replace fuse under live DC load unless equipped with certified load‑break switchgear, strictly follow 2000VDC high‑voltage safety operation procedure.
• Replace fuse immediately if shell crack, deformation or mechanical damage appears.
• Additional reliability validation test required for extremely high‑vibration industrial environments.
• Select matched copper conductor cross‑section for terminals to control temperature‑rise performance for high‑voltage heavy‑current working condition.
• Ordering reminder: specify terminal type B(flat bolted) or K(hook‑fork customized) when placing purchase order; models marked asterisk * need factory pre‑confirmation before order placement, electrical performance is identical for two terminal versions.

Packing & Storage Requirements

Standard original‑box bulk package. Store in clean, dust‑free warehouse. Storage temperature:‑40℃~+120℃; humidity limit: RH≤70%@40℃, RH≤80%@30℃, RH≤90%@20℃. Sample testing support, OEM customization, stable mass‑volume supply for ultra‑high‑voltage energy‑storage and new‑energy equipment manufacturers. REACH declaration available upon customer request.

Preguntas frecuentes

Q: What rating for GFEVT2000 Series Square‑Body Fast‑Acting aR DC Fuse 2000VDC 250‑800A?
A: Rated 2000VDC, current range 250‑800A, aR fast‑acting class, max breaking capacity 100kA@2000VDC(Time Constant ≤10‑15ms), minimum breaking current ≥3In, Size 3# square‑body.

Q: Difference between B‑type and K‑type terminals?
A: B‑type is flat bolted horizontal connection; K‑type is customized hook‑fork vertical terminal. Both versions share exactly same electrical parameters, only mechanical mounting differs, specify terminal model on purchase order.

Q: What body size for GFEVT2000?
A: Size 3# square‑body construction, two optional terminal structures B / K.

Q: What standards does GFEVT2000 comply with?
A: Performance referenced to UL‑248‑1/UL‑248‑13, IEC60269‑1/IEC 60269‑4, RoHS compliant; REACH document available on request.

Q: Main application scenarios for GFEVT2000?
A: 2000V‑class large‑capacity energy‑storage cabinets, high‑voltage lithium‑ion battery‑pack and DC relay backup short‑circuit protection.