Product DescriptionPOWER CORD SURGE PROTECTOR 50 AMP
Automatically shuts off the power when excessive voltage, Low (less than 102 Volt) and High (greater than 132 Volt), or open neutral is present. Automatic reset on power restoration. Caution indicator light indicates miswired pedestal, reverse polarity and elevated ground voltage. 2 minute 15 second reset delay protects A/C compressor. Fits neatly inside RV´s electrical compartment. 120/240 Volt, 50 Amp unit offers 3,850 Joules of power surge protection.