Protects equipment from electrical surges and voltage disturbances by utilizing safety thermal fusing and gas discharge tube surge protection technology, combined with the ability to monitor the line protecting equipment against over and under voltage conditions that can cause damage to circuit boards and motors. Easy surge protection solution to install; the surge protection unit is fully programmable to set the voltage cutoff range from 90V to 300V while storing up to 300 events. Easy to set up and program surge device. Magnetic latching relays for maximum protection and reliability. LED lighting display easily indicates surge protection status. Over-under voltage protection with adjustable auto cut-off and auto restore delay time. VRM60A RSH surge protection device; 50kA all in one surge protection device; 120/240V for HVACR equipment. Protects from 50,000 amp sigle surge and 10,000 repetitive surges. FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets.