cầu chì sứ YORO RST1 RST10 RST11 RST16 STF4 STF5 690V 800V 1000V 800A 710A 630A 550A 500A 450A 400A 400A 350A 315A 250A 200A

This series of fuse-links are suitable for AC 50HZ, rated voltage to 690V, and rated current to 1250A. They are mainly used in electrical circuits as short-circuit protection (aR) for semiconductor equipment.

    The rated segmentation capacity of this series of fuse-links is up to 100KA.

    This series of fuse links comply with the national standard GB 13539.1/GB 13539.4 and the International Electrotechnical Commission standard IEC 60269-1/IEC 60269-4.

→Structural features:

    The variable cross-section melt made of pure silver is encapsulated in a high-strength porcelain melt tube; the melt tube is filled with chemically treated high-purity quartz sand as the arc extinguishing medium; the two ends of the melt are spot welded to the contacts Make electrical connections securely.