The D65VMRP over/under voltage relays provide protection to equipment where either an over or undercurrent condition is potentially damaging. They are designed to operate when the operating voltage reaches a preset value and drop out when the operating voltage drops to a level below the preset value. The pickup voltage setting is user adjustable from 75 to 125% of the nominal voltage rating. As standard, the D65VMRP Series has a dropout voltage setting fixed at 95% of the pickup voltage setting. The relay energizes when the monitored voltage is above the pickup setting. The relay de-energizes when the monitored voltage is below the dropout setting for a period longer than the drop out time delay, which is fixed at 500 ms.