570 Hybrid Surge Protective Device


500 Series

570 Hybrid Surge Protective Device

Emerson Network Power > Products > Surge Protection > Panelmount > 570 Surge Protective Device (formerly Liebert SH)

The 500 Series is a premium family of surge protection devices offering individually fused MOV (Metal Oxide Varistor) arrays. This "True Surge" tested design provides redundancy and high survivability to repetitive impulses.

The 570 line of surge protective devices offers superior clamping at surge current ratings up to 375kA per mode or 750kA per phase. The 570 is a true hybrid device offering a coordinated multi-stage system of suppression, integrating the fast response time of the SAD (Silicon Avalanche Diode) modules with the high-energy capability of the MOV modules.

Also, available with Motorola R56 Type 1 approval.

ANSI/UL 1449 3rd Ed. Type 1 Listed


  • 570 (Hybrid) builds upon the industry standard 560 Series.
  • Patented component level monitoring — including neutral to ground.
  • Unique sand-packed silver fuse network UL Rated at 200kAIC for safety.
  • All surge suppression components used are computer tested and matched.  SADs are matched to +/- 1% and MOVs are matched to 1 volt for optimum reliability and long life.
  • Highest surge current capability and survivability in the industry.
  • Built-In-Test feature standard.
  • 10-year warranty on parts and 5-year on-site labor, backed by Emerson Power Service.
  • True, coordinated mult-staged system of suppression.
  • Lowest UL 1449 clamping voltages achieved.
  • Smaller enclosure size allow for easier installation for hybrid system.
Connection means parallel connected

Agency Listing

ANSI/UL 1449 Third Edition, UL 1283 (Type 2 Locations),
cUL (Type 2 Locations), FCC Part 15 Class B
Protection Modes All modes standard(L-N, L-G, N-G, L-L); Optional - any combination
Surge Current Capacity 250 to 750kAmps per phase depending on model
Surge Energy Rating (Primary SAD) 500 Joules
Fault Current Rating 200kAIC
Location Type Type 1
Nominal Discharge Current (In) 200kA
EMI/RFI Filtering 63 dB max from 10kHz to 100MHz
SAD Matching Within 1%
MOV Matching Within 1V
Response Time  <.5 nanoseconds
Monitoring Features Internal/External Status LEDs, Audible Alarm, Summary Alarm Contact (2 sets), Built-in-test circuit tests MOV/fuse array capacities, Phase loss indication, Low voltage indication, Loss of power indication, Surge counter (optional)
Enclosure NEMA 12 standard Optional - NEMA 3R, 4, 4X and caseless
Line Frequency 47-63 Hertz
Line Voltage +/-15% nominal
Temperature  -40 to +60 degrees C
Relative Humidity 0 to 95% noncondensing
Altitude 0 to 18,000 feet
Audible noise Less than 45 dBa
Warranty 10-years parts, 5-year labor
Standard Features Unit status indicators, Dual, isolated form C dry contacts
Optional Features Integral disconnect
Technical Specification
Surge Suppression Products
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