Technology Research 34560-004 50 Amp Hardwire Surge Guard TRC 50 Amp Hardwire Surge Guard, Model 34560, Rated 120/240 Volt, 50 Amp Automatic reset on power restoration Automatically shuts off the power when the following is present: Open neutral; Low (less than 102) and High (132 Volt) Voltage Multi-mode surge suppression Joystick for easy screen navigation, Plug and Play Model 34560 is a 50 amp hardwire Surge Guard, 3850 Joules of power surge protection; 14.25 Inch Height x 6.13 Inch Width x 14.25 Inch Length