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ZZZ-Transtector DC DEFENDER Outdoor Clamshell DC Surge Protectors

Transtector DC DEFENDER Outdoor Clamshell DC Surge Protectors (SPDs) are clamshell-style SPDs that use Silicon Avalanche Suppression Diode (SASD) technology to protect critical equipment that operates on a 48VDC electrical service. This Transtector DC surge protector series provides effective protection against electrical transients generated by lightning and internal switching events. The DC Defender Outdoor Clamshell series supports long-term system reliability by safely shunting high amounts of transient energy while maintaining a very low clamping voltage.

Features

  • NEMA 3R (1101-1025 and 1101-1027)
  • UL 497B, Class I/Div II, ATEX (1101-1110 and 1101-1110-KT)
  • 100% SASD protection
  • Screw terminal block
  • Pole mount or wall mount

Applications

  • Industrial automation
  • Controls and sense loops
  • Telecommunications base stations
  • IT and data centers
  • Wastewater treatment
  • Rail
  • Oil and gas
  • LED lighting

Specifications

  • 48VDC service voltage
  • Current rating
    • 15A (1101-1110 and 1101-1110-KT)
    • 25A (1101-1025 and 1101-1027)
  • Maximum continuous operating voltage
    • 60VDC (1101-1110 and 1101-1110-KT)
    • 88VDC (1101-1025 and 1101-1027)
  • 5ns response time
  • 8/20μs surge current
    • 2.5kA (1101-1025)
    • 5kA (1101-1027, 1101-1110, and 1101-1110-KT) 

Datasheets

Published: 2026-01-29 | Updated: 2026-01-30