The 500 Series is a premium family of surge protection devices offering individually fused MOV (Metal Oxide Varistor) arrays. This "True Surge" tested design provides redundancy and high survivability to repetitive impulses.
The 570 line of surge protective devices offers superior clamping at surge current ratings up to 375kA per mode or 750kA per phase. The 570 is a true hybrid device offering a coordinated multi-stage system of suppression, integrating the fast response time of the SAD (Silicon Avalanche Diode) modules with the high-energy capability of the MOV modules.
Also, available with Motorola R56 Type 1 approval.
ANSI/UL 1449 3rd Ed. Type 1 Listed