Motor Control Center

Introduction of MCC & PCC

A Motor Control Center (MCC) is an assembly that controls several or all-electric motors centrally. There are multiple enclosed sections and a common power bus. Each section has a combination starter, which consists of a motor starter, fuses or circuit breakers, and a power disconnect. It is also possible to equip a motor control center with push buttons, indicator lights, variable-frequency drives, programmable logic controllers, and metering equipment. In some buildings, it may be combined with the electrical service entrance.

Typically, Motor Control Centers can be found in large industrial or commercial buildings containing a lot of electrical motors that must be controlled centrally, such as an electrical room or mechanical room.

A Power Control Centre (PCC) is a main power control panel that contains feeder breakers and supply breakers, monitoring devices, control devices, switching devices, protection devices, and instrumentation devices. Alternatively, it is called the Main Switchboard. This type of switch is mainly installed near power sources, so its fault level is high. In order to function properly, it must be able to satisfy 50KA or 65KA fault levels for 1 second.

A Power Control Center’s bus bar system is designed to handle fault levels and temperature rises up to 40 degrees Celsius. The termination of cables is provided with ample space. In order to protect the source and equipment, various protections are provided, such as short circuits, overloads, earth faults, under voltages, etc. Know more