Looks like a standard pressure switch and pressure tank system to me. I can see the gauge is at about 50 so it must be a 40/60 pressure switch. Pump comes on at 40 and off at 60. It should be doing this in minutes not seconds. Are there any problems? Do you have water? Is the pump cycling on and off too rapidly? Tank looks old, might need to check the air charge. See the sticky at top about pressure tank maintenance.