277/480 Vac, 3-Pole, 3-Phase Wye Surge Protection - Transtector I2R-75KY480

Network safety and reliability are built into the I2R 75K series.  Engineered using patented safe-fail self-protection design, the I2R SPD couples a high short circuit rating with thermally protected MOV, which eliminates the need for additional overcurrent protection devices.

The I2R-75KY480 combines a robust 75 kA surge capqacity that also eliminates back up fusing requirements thus providing network operators with a quick to install, safe, and reliable solution for 277/480 Vac applications.


  • Safe-fail, self-protected design
  • No additional overcurrent protection devices or back up fusing required
  • Reverse chassis direction capability allows cable entry from top to bottom
  • Remote visual status indication
  • IP 20 finger-safe design
  • VPL L-N 1500 Vac, L-L 2500 Vac
  • Replacement modules available, order part number I2R-75KR277

Specifications for Transtector I2R-75KY480

277/480 Vac
Mount Type
DIN rail
L-N 320 Vac, L-L 640 Vac
Weight (lb)
1.0 lb
Dimensions (inches)
4.0 x 2.07 x 2.78