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ASCO Model 157 (Edco SS64 & SS65) Surge Protective Device

0-28VDC | 10kA

The ASCO Model 157 Surge Protective Device is designed for the water and wastewater industry. These multi-stage hybrid suppressors address over-voltage transients with gas tube and silicon avalanche technology. In addition, sneak and fault currents are mitigated with PTC devices which consist of solid-state resettable fuses.

ASCO Model 157 (Edco SS64 & SS65) Surge Protective Device
  • Features

    • Transient protection for low-voltage signal lines
    • Sneak/fault current protection
    • Resettable fusing—PTCs
    • Differential and common mode protection
    • Automatic recovery


    • Encapsulated in stainless steel pipe nipples
    • Protection for one pair, (Two wires and shield on 3/4”)
    • 5 Year Warranty


    • Fire/Alarm/Security
    • Water/Wastewater