The 855 Series Plug-In Current Transformers from Wago are UL Recognized Components. Suitable for 230 V, 400 V and 690 V low-voltage applications, their maximum operating voltage is 1.2 kV. The units transform rated primary currents into electrically isolated secondary currents up to 1 A - with a measuring accuracy of one percent (accuracy class 1). They can be used in operating temperatures ranging from -5 °C to +50 °C and may be permanently loaded with up to 120 percent of the nominal current. CAGE CLAMP connection technology provides screwless termination of conductors ranging from 0.08 to 4 mm² (AWG 28-12). Conductors can be terminated from both the front side and the rear side of the transformers. The plastic housing is robust and can be mounted in four different ways: on round cables, on copper current bars, on mounting plates and - depending on the version - on carrier rails. Plug-in current transformers are well-suited to measuring and processing high currents.