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MIRO RGS4A / 660GH RGS Series High-Speed Semiconductor Fuse, 140A, 690V AC, aR Characteristic

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The MIRO RGS4A is a high-speed semiconductor fuse engineered for the ultra-fast protection of power electronic components such as thyristors, SCRs, and rectifiers. As an aR-rated device, it is specifically designed to clear short-circuit faults rapidly in 690V AC systems, minimizing let-through energy and safeguarding sensitive semiconductor junctions from catastrophic thermal failure.

Product ID (MPN) RGS4A
Order Code 660GH
Rated Current 140A
Rated Voltage 690V AC
Utilization Category aR (High-Speed Semiconductor)
Fixing Centers (B) 77 mm
Body Diameter (ΦD) 23.8 mm
Total Length (C) 98 mm
Blade Thickness (F) 3.0 mm
Mounting Hole (φd) 9 x 14 mm
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