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ASCO Model 331 Surge Protective Device

120/240 VAC | 80kA/Phase

The ASCO Model 331 (Edco® EMC-240B) Surge Protective Device is designed to protect AC distribution panel circuits or 120V power supplies feeding sensitive electronic equipment. Electrically, the unit incorporates MOV and thermal fusing technology.

ASCO Model 331 Surge Protective Device
  • Features

    • Fast response time
    • 40,000 Amps per phase capacity
    • UL 1449 listed 


    • Fail-safe and fused
    • Operational status indicators
    • 5 year warranty  


    • Transportation