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ASCO Model 570 Surge Protective Device

120–480 VAC | 250–750 kA/Phase

The ASCO 570 Surge Protective Device is a true hybrid, offering a coordinated multi-stage system of suppression, integrating the fast response time of the silicon avalanche diode (SAD) modules with the high-energy capability of the MOV modules. Superior clamping at surge current ratings up to 375 kA per mode or 750 kA per phase.

ASCO Model 570 Surge Protective Device
  • Features

    • Model 570 (Hybrid) builds upon the industry standard ASCO Model 560 surge protective device
    • Patented component level monitoring including neutral to ground
    • Unique sand-packed silver fuse network UL Rated at 200 kAIC for safety
    • All surge suppression components used are computer tested and matched
    • SADs are matched to +/- 1% and MOVs are matched to 1 V for optimum reliability and long life
    • Highest surge current capability and survivability in the industry
    • Built-in test feature standard


    • True, coordinated multi-stage system of suppression
    • Lowest UL 1449 clamping voltages achieved
    • Smaller enclosure size allows an easier installation for hybrid system
    • Optional ASCO ASM (Active Surge Monitor), web-based power quality monitoring
    • 10 years (on all parts)
    • 5 years (on-site labour)


    • Banking, Financial and Insurance
    • Broadcast and Entertainment
    • Construction and Engineering
    • Data Centre/Colocation/Hosting
    • Education
    • Fire/Alarm/Security
    • Government
    • Healthcare
    • Manufacturing

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