Limitor® - NF/UTE Back-up Fuses, 7,2kV to 24kV - Type FR

FR-type fuses are designed to protect HV/LV power distribution transformers. Designed to be coordinated with other equipment, these current limiting fuse-links interrupt fault currents before they reach their peak. The fault current is interrupted inside the fuse-link body and although this is very fast, there is no sign of it outside.
The 24kV fuses were specially designed with very low power losses, for use in SF6-insulated or compact air-insulated fused switchgear combinations
The main elements in these fuses are: a barrel of class F insulating synthetic material, nickel plated aluminium end contacts, pure silver fuse elements and a composite material fuse element holder to withstand high temperatures.
Thanks to their structure, based on a synthetic material, FR fuse-links are the perfect answer to the stress involved in use inside HV bays and fuse-link chambers.

• Superior mechanical strength
• Outstanding withstand to operating stresses
• 100% synthetic structure
• Reduce power losses by 30 to 40% (24kV)
• Average type striker: force 1 ±0.5 Joules
• High breaking capacity
• High current limitation
• EDF Approval which guarantees high performances and quality of fuses manufactured (24kV)
• In accordance with:
• IEC 62271-105
• IEC 62271-107
• IEC 60787
• IEC/TR 62655