Fast-acting fuse with aR tripping characteristic, for nominal current 350 (A), nominal voltage 690 (V), connection type blade contacts. OptiFuse FR series fast-acting fuses for nominal currents from 40 to 4000 A are designed to protect semiconductor thyristor electric drives, rectifiers for electrolysis, and other types of conversion devices; additionally, the fuses can be used for rolling stock applications.
Fuses are manufactured in accordance with the requirements of GOST IEC 60269-1-2016, GOST IEC 60269-4-2039
| Design of fuse status indicator | Front |
| Utilization category | aR (semiconductor short-circuit protection) |
| Rated breaking capacity | 100 кА |
| Rated voltage | 690 В |
| Rated current | 350 А |
| Current type | Alternating current (AC) |
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