DISCONTINUED - Liebert PowerSure Surge II

Discontinued Products
Emerson Network Power > INDIA > Products > By Type > AC Power and UPS > Liebert PowerSure Surge II
Liebert PowerSure Surge II high-quality surge suppressors that offer protection against power surges, spikes and other problems on incoming utility lines. Three models are available to offer protection to suit most desktop and small office electrical equipment.

Liebert PowerSure Surge II is available in three models:

  • The Professional Series PRF555: Delivers effective, computer-grade power protection for desktop computers, printers, fax machines, point-of-sale systems and other electronic equipment.
  • The Network Series NET900T: Provides data line surge protection for network, telephone, modem, fax, answering machine, DSL and Internet via RJ-45 connection. The NET900T prevents harmful incoming spikes and surges from being passed through to your connected equipment. Accommodates RJ-11, RJ-12 and RJ-45 connectors.
  • The DSS Series DSS900T: Dual Input Coaxial Surge Suppression For DSS Or Cable Modems. Protects cable modems, audio and video equipment connected to the surge protector via two sets of coaxial jacks. The DSS900T also provides data line surge protection for telephone, modem, fax, answering machine, DSL and Internet via RJ-11 connection. Prevents harmful incoming spikes and surges from being passed through to your connected equipment.

This is a discontinued product.



  • Eight surge protected outlets
  • Spacing for three transformer blocks without covering other outlets

Higher Availability

  • Two continuously powered “always on” outlets n 90° angled input plug mounts flush with wall and offsets cord to prevent covering a second outlet
  • Six-foot line cord
  • Thermal fuses inhibit destructive surges even if the surge suppressor has failed
  • Site wiring fault indicator
  • Surge protection available indicator
  • On/off switch with circuit breaker
  • High Joule rating -- greater ability to absorb high energy surges without damage
  • UL 1449 clamping voltage
  • EMI/RFI filtration eliminates electrical noise
  • Additional DSL and cable modem protection

Lowest Total Cost of Ownership

  • Economic solution to prevent damage from potentially damaging power surges
  • Up to $30,000 connected equipment protection

Ideally Suited For

  • Home and small office desktop PCs
  • Network workstations
  • Telephones, modems, fax, answering machines
  • Network, cable modems
  • Audio, video and other communications equipment
Technical Specification


Joules (bigger is better)555 J900 J900 J
UL 1449 Clamping Voltage (smaller is better) 330V330V330V
Peak Surge Current (bigger is better)48,000A72,000A72,000A
IEEE Let-Through Voltage* (smaller is better)<10V<10V<10V
EMI/RFI Filtration (bigger is better)>50 dB>50 dB>40 dB


 Other FeaturesPRF555NET900TDSS900T
Phone Line ProtectionNoYesYes
Cable ProtectionNoNoNo
Number of Receptacles888
Number of Always On Receptacles222
Thermal FusesYesYesYes
Reversed Wiring IndicatorYesYesYes
On/Off Switch with Circuit BreakerYesYesYes
Connected Equipment Agreement$15,000$30,000$30,000

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