These plug-in current transformers measure ac currents in 230- , 400- and 690-V low-voltage mains. The current transformer can be loaded with up to 120% of the nominal current, allowing users to measure peak currents without damaging the transformer. The current transformers of accuracy Class 1 and Class 3 can be mounted on either round cables or current bars. The transformers are equipped with the vibration-proof and maintenance-free Cage Clamp connection. The output is accessible from two sides, allowing the conductor to be terminated easily even in space-restricted applications.