These panelboards are known as industrial machine control systems and are used to control AC or DC motors. In these panelboards, montage is done using delta‐star assembly, contractors,
timers, overload relays, soft starters, or inverters.
This type of panelboard is used in factories that have three‐phase motors with high power demands. Three‐phase motors consume power 7 to 15 times more power than their normal current in their starting phase, and this high current consumption continues until the motor reaches its proper speed. This high consumption of current during the motor start phase reduces the life of the motors and put pressure on the municipal power network. To reduce this high current consumption, motor control panels are used.