330 Surge Protective Device


Emerson Network Power > EMEA > Products > By Type > Surge Protection > Panelmount > 330 Surge Protective Device (formerly PowerSure LPM, IM & ASCO 351)

300 Series

330 Surge Protective Device

Available with surge current ratings up to 80kA per mode or 160kA per phase. Protects connected equipment against electric power line disturbances and transients in medium exposure locations.

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

The 330 line is available with surge current ratings up to 80kA per mode or 160kA per phase. A status LEDs per phase and relay contacts provide indication of the suppression system failure or power loss.

UL 1449 3rd Edition (2009) Type 2 Listed

  • Non-modular medium exposure TVSS
  • Displays LED indication per phase
  • Provides remote indication capabilities
  • Alerts with audible alarm


  • 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 5 year warranty.

Ideally Suited For

  • Distribution panelboards
  • Control panels
Technical Specification
  • Operating Voltage Range: +/- 15% Min.
  • Fault Current Rating: 65kAIC
  • UL Location: Type 2
  • I-nominal (kA): 10
  • Operating Frequency Range: 47-63 Hz
  • 50 Ohm EMI/RFI Attenuation: 40dB
  • Response Time: <0.5ns
  • Operating Temperature: -40º C to +60º C
  • Operating Humidity: 0% to 95%
  • Certifications: ANSI/UL 1449 Third Edition
  • Surge Current Rating: 100kA or 160kA per Phase
  • Warranty: 5 Years
Contact Support
Surge Suppression Products
Contact our support department about your Surge Protection product.

Telephone: +1 607 721 8840
Toll-Free: +1 800 288 6169