Ensure that all of your electronic equipment remains safe and unharmed during a power outage or power surge with the P7T10 Essential SurgeArrest. Changes in voltage cause lockups and loss of work. If the surge components of the P7T10 are damaged due to a power spike or over voltage, excess power cannot reach your equipment. In addition, APC's SurgeArrest is fail safe, which means that once the circuit of an SurgeArrest has been compromised the unit disconnects equipment from the power supply ensuring that no damaging surges reach your equipment.