The new Surgetrab surge protection devices from Phoenix Contact can be applied directly to measuring devices without any additional accessories, and do not need to be installed in separate boxes in front of the measuring head. The device is simply screwed in and connected to provide protection against surges. Versions include the S-PT-1x2-24DC, which is typically used for 0(4)-20mA current loops, and the S-PT-EX(I)-24DC, which serves the requirements of intrinsically safe power circuits.