Edco SS64 Suppressor


The Edco SS64/SS65 Series Multi-Stage Hybrid Suppressors for Over-Voltage Transients are designed for the water and waste-water 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 re-settable fuses. The units are encapsulated in stainless steel pipe nipples making them suitable for use in severe environments. The Edco SS64 model protects a signal pair.

SKU: SS64 Categories: , , Tags: , , ,

Product Description

Technical Specifications:

  • Response Time: < 1 Nanosecond
  • MaximumSignal Voltage: 28 VMax
  • DC Clamping Level (L-G): 36 V ±l0%
  • DC Clamping Level (L-L): 72 V ±l0%

Peak Surge Current:

  • 10 kA (8 x 20 μs) 

Maximum let-thru Voltage:

  • Line-to-Ground (10×700 μs): 44 V@400 A

Maximum let-thru Voltage:

  • Line-to-Line (10×700 μs): 90 V@400 A
  • Series Resistance (per conductor): 5 V (typical)


  • (Zero Volts Bias): 
    • (L-L) 600 pf typical
    • (L-G) 1200 pf typical
  • Number of Occurrences 400@500 Amps (10×1000μs)

Additional information

ASCO part #

Square D part #



  • Transient protection for low-voltage signal lines
  • Sneak/fault current protection
  • Resettable fusing—PTCs
  • Differential and common mode protection
  • Encapsulated in stainless steel pipe nipples
  • Protection for one pair (Two wires & shield on SS65)
  • Automatic recovery
  • 5 year warranty

  • Benefits:

  • Suitable for use in severe environments