To provide a protection control device and a method of controlling the same, wherein when a set point is set for each of settling elements used in relay calculation, an operator's failure to input a set point and an erroneous input of the same can be prevented without fail.

The settling display decision means 520b of a settling display processing unit 520 determines whether each settling element stored in the memory 300 of a target relay element is set as one to be hidden by a display mode setting means 520a. When a settling element 1 is determined as one to be hidden by the settling display decision means 520b, a settling display means 520c hides this settling element when a screen for selecting a settling element 1 is displayed on a display unit 800. When a settling element 1 is determined as one not to be hidden, the settling display means 520c displays the set point of the settling element 1 on the display unit 800 together with the settling element 1.