320 Surge Protective Device

300 Series

The 300 Series of surge protection devices are specifically designed for low to medium exposure locations.

The 320 line is available with surge current ratings up to 25kA per mode or 50kA per phase. A status LED and relay contacts provide indication of the suppression system failure or power loss.

UL 1449 3rd Edition (2009) Type 2 Listed



  • Non-modular low exposure TVSS
  • Displays LED status indication
  • Provides remote indication capability


  • Retrofits easily onto existing panelboards.
  • Attaches directly to the breaker in the panel.
Higher Availability
  • Offers easy, safe and maintenance-free operation.
Lowest Total Cost Of Ownership
  • Protects your investment with a 5-year parts warranty.
Ideally Suited For
  • Distribution panelboards
  • Control panels

Tech Specs

  • Maximum ContinuousOperating Voltage (MOV): 120VAC (125%), all others (115%)
  • Surge current Rating:25kA or 50kA per Phase
  • Fault Current Rating: (AIC)22 kAIC
  • Operating Frequency Range:47 to 63 Hz
  • 50W EMI/RFI Attenuation:40 dB
  • Response Time:<0.5 ns
  • Status Indication:LEDs, Dry Contacts
  • Certifications:ANSI/UL 1449 3rd Edition (2009) Type 2, CUL
  • Warranty: 5 Years Parts