Littelfuse PLM8405 is an 8-pin plug-in voltage monitoring relay. It offers a load rating of 10 A resistive @ 240 Volts and has surge protection. With a power consumption of ≤3 W, it operates on a 50/100 Hz AC line frequency. The relay features automatic reset time, undervoltage trip voltage of 88-92% of adjusted line voltage, and a trip delay range of 5 s. It detects phase loss and phase reversal with a response time of ≤200 ms. The input voltage maximum is 480 V, and it can be used with 3-phase delta or WYE configurations.