Dimensions (mm)

GFBFG4‑D‑105E Series Square‑Body aR ESS DC Power Fuse 1500VDC 400‑2000A

GFBFG4‑D‑105E Series Square‑Body aR ESS DC Power Fuse 1500VDC 400‑2000A is #4 size square‑body bolt‑connected aR‑class high‑speed DC fuse dedicated for heavy‑duty industrial energy‑storage and wind‑power systems. Rated voltage 1500VDC, max breaking capacity 250kA@1500VDC(L/R≤5ms), minimum breaking current＞5In. Features strong current‑limiting performance, superior cycling capability, tin‑plated terminal surface 3‑5μm, 4‑pcs M10 mounting holes. Performance referenced to UL‑248‑13, CE & RoHS compliant, REACH declaration available upon request. Reliable short‑circuit protection solution for large‑scale industrial ESS and wind‑power converter cabinets.

GFBFG4-D-105E-Series.-400-2000A-1500Vdc-IR-250kA-4-ESS-Fuse-1

Key Features

• Model Series: GFBFG4‑D‑105E Square‑Body aR ESS DC Power Fuse
• Rated Voltage:1500 VDC
• Current Range:400A‑2000A, Operation Class:aR(partial‑range semiconductor short‑circuit protection)
• Max Breaking Capacity:250kA @1500VDC(L/R ≤5ms)
• Minimum Breaking Current:＞5 In
• Strong current‑limiting characteristic for heavy fault‑current conditions
• Superior cycling capability for frequent working‑condition fluctuation in ESS & wind‑power plants
• #4 square‑body housing,4‑pcs M10 bolt mounting holes,tin‑plated terminals 3‑5μm
• High mechanical stability for heavy‑duty industrial cabinet installation, anti‑vibration ≥20g
• Compliant:Referenced to UL‑248‑13, CE, RoHS; REACH available upon request

General Technical Specifications

Part Number List & Electrical Parameters(Test@1500VDC,250kA,L/R≤5ms)

Application Scenarios

GFBFG4‑D‑105E Series Square‑Body aR ESS DC Power Fuse 1500VDC 400‑2000A is designed for heavy‑duty new‑energy industrial DC projects. Mainly used for large‑scale industrial energy‑storage systems and wind‑power converter cabinets. aR‑class partial‑range protection characteristic delivers reliable short‑circuit protection for power semiconductors and high‑power DC equipment under severe fault‑current conditions.

Installation & Operating Notes

• #4 square‑body with four M10 mounting holes; apply correct bolt torque value to avoid poor contact and over‑heating risk; terminal tin‑plated 3‑5μm surface treatment.
• Recommended continuous operating current ≤75% of fuse rated‑current; apply temperature‑derating‑factor Kt for ambient temperature over 40℃.
• Altitude ≤2000m no‑derating; closed‑box installation 2000‑4500m: derate 2%‑5% rated‑current per 1000m elevation increase. Open‑air installation can normally ignore altitude influence. Re‑check insulation clearance at high altitude per GB/T16935.1.
• Supports vertical, horizontal and inclined mounting; avoid gravity‑vibration adverse impact for spring‑contact construction.
• Forced‑air cooling can improve heat dissipation and increase allowable operating current, refer to Kv correction coefficient.
• 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 industrial working environments.
• Select matched copper conductor cross‑section for terminals to control temperature‑rise performance.
• *Note: Model marked asterisk, please confirm with factory before ordering.

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 industrial energy‑storage and wind‑power manufacturers. REACH declaration available upon customer request.

FAQ

Q: What rating for GFBFG4‑D‑105E Series Square‑Body aR ESS DC Power Fuse 1500VDC 400‑2000A?
A: Rated 1500VDC, current range 400‑2000A, aR partial‑range protection class, max breaking capacity 250kA@1500VDC(L/R ≤5ms), minimum breaking current＞5In.

Q: What is aR‑class partial‑range fuse?
A: aR‑class partial‑range fuse is designed for heavy short‑circuit fault protection of power semiconductor devices, mainly acts on high fault‑current conditions.

Q: What mounting structure for GFBFG4‑D‑105E?
A: #4 square‑body housing with four M10 bolt mounting holes, tin‑plated 3‑5μm terminals.

Q: What standards does GFBFG4‑D‑105E comply with?
A: Performance referenced to UL‑248‑13, CE, RoHS compliant; REACH document available on request.

Q: Main application scenarios for GFBFG4‑D‑105E?
A: Large‑scale industrial energy‑storage system and wind‑power converter cabinet short‑circuit protection.