Key components and features of PCCs include:

1. Incoming Power Supply: PCCs receive power from the utility grid or other external power sources, which is then distributed to various loads within the facility. The incoming power may be fed through transformers for voltage transformation as required by the facility's power distribution system.
2. Distribution Panels: PCCs house distribution panels equipped with circuit breakers, switches, and other protective devices to control the flow of electricity to different sections of the facility. These panels allow for selective isolation of circuits for maintenance or in case of electrical faults.
3. Busbars and Cables: PCCs contain busbars and cables to efficiently distribute power from the incoming supply to various loads and equipment within the facility. Busbars are used to carry large currents between the incoming power source, distribution panels, and outgoing feeders.
4. Monitoring and Control Equipment: PCCs are equipped with monitoring and control devices such as meters, relays, and control switches to monitor electrical parameters such as voltage, current, and power quality. These devices provide real-time data on the performance of the electrical system and facilitate quick response to abnormal conditions or faults.
5. Protection Devices: PCCs incorporate protection devices such as circuit breakers, fuses, and protective relays to safeguard equipment and personnel from electrical faults such as short circuits, overloads, and ground faults. These devices detect abnormal conditions and interrupt the flow of electricity to prevent damage to equipment and ensure personnel safety.
6. Enclosures and Enclosure Ventilation: PCCs are housed in sturdy enclosures designed to protect electrical equipment from environmental factors such as dust, moisture, and mechanical damage. Adequate ventilation is provided to dissipate heat generated by electrical components and maintain optimal operating temperatures.
7. Emergency Shutdown Systems: PCCs may include emergency shutdown systems or emergency stop buttons to quickly disconnect power in case of emergencies or safety hazards. These systems provide a means for personnel to safely de-energize equipment and evacuate the area in case of electrical fires or other emergencies.