Littelfuse PLM9405 Line Monitor 3-PH

The Littelfuse PLM9405 3-phase voltage monitor is a part that is used to monitor the voltage levels of HVAC systems at all times. It works in delta and wye connection without neutral wire connection. It also has features such as undervoltage protection, voltage unbalance, phase loss, and phase reversal due to its microcontroller. Some of the features are input voltage of 400 – 480 Vac, single pole double throw isolated output and the dimensions of the part are 3.2 x 2.39 x 1.78 inches. Other advantages are self-checking of faults, LED indication for checking, and conformity to safety standards of motors and generators which makes it suitable for use in HVAC systems.