Littelfuse CP-5-460 Single-Phase Current MonitorLittelfuse CP 5 460 Voltage Monitor Product Description The CP5 Series are undercurrent monitors designed to monitor one leg of a 3 phase system. It is commonly used as a tower monitor on center pivot irrigation systems to detect stalled or jammed towers to prevent over watering. The CP5 Series has both an adjustable trip level and an adjustable trip delay timer. When the current is sensed, the CP5 Series activates its output relay, thus starting the