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Surge Protection for Power Lines

NEMA UL/CSA Type 1

Surge-Trap® STZ-R Series (Internal SPD) - 450kA

For facility-wide surge protection internal to existing equipment such as switchgear, panelboards or motor control centers, the Surge-Trap® Type 1 STZ-R Series is the obvious choice. The STZ-R series features surge capacities up to 450kA designed with Mersen’s industry leading TPMOV® technology inside making it the safest and most reliable product on the market. Ideal for OEMs and panel builders, this internal SPD can be installed on the line or load side of the service entrance.

Features :-
  • SPD intended to be installed internal to existing switchgear, panelboards, motor control centers, etc…
  • Designed with the industry leading Mersen TPMOV® Technology (internally fused)
  • Available with accessory Option A for basic features (LED status indicators) and Option B for standard features (EMI/RFI filter, surge counter with reset, Audible alarm and dry contacts with silence)
  • Local or remote human-machine interface (HMI) mounting options
  • HMI can be rotated 90 degrees depending on desired cable entry location
  • Available with or without disconnect switch
  • For use in ANSI/UL Type 1 or 2 SPD installations
  • Up to 10 Modes of Protection (L-N, L-L, L-G, N-G)
  • 15-year warranty
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Surge Trap STZ R Series Internal SPD450kA