KU and NV series limit switches are designed for switching control circuits in AC crane electric drives with voltage up to 500 V, frequency 50/60 Hz, and DC voltage up to 440 V, and are installed in control circuits to limit the linear movement of mechanisms. The switches have two independent electrical circuits and can operate on both AC and DC in intermittent mode. * Wide selection of actuator types; * High degree of protection against moisture and dust; * High switching and mechanical wear resistance; * Silumin housing; * Simple device installation; * High wear resistance indicators.