PCC vs MCC panel: what is the difference?
Both are LT switchboards built to IEC 61439, but they do different jobs in a plant. Choosing the right one decides cost, space and how easily you can maintain the system.
A Power Control Centre (PCC) is the main LT switchboard. It receives power from the transformer and the DG set and distributes it to the rest of the plant. A Motor Control Centre (MCC) sits downstream of the PCC and starts, stops and protects individual motors.
| PCC | MCC | |
|---|---|---|
| Main job | Receive and distribute bulk power | Control and protect motors |
| Typical incomer | ACB from transformer and DG, often with bus coupler | ACB or MCCB fed from the PCC |
| Outgoing feeders | ACB / MCCB feeders to MCCs, PDBs, APFC | DOL, star-delta, soft-starter and VFD feeders |
| Key devices | Breakers, multifunction meters, protection relays, changeover interlocks | MCCB or MPCB, contactors, overload relays, push buttons, indication |
| Construction | Fixed or draw-out ACBs, heavy busbar system | Fixed or draw-out feeder modules, Form 3b / 4 separation |
When one panel can do both
In smaller plants the PCC and MCC are often combined in one board (a PMCC). This saves space and cost, but a fault or shutdown on one section can affect the whole board, so larger and continuous-process plants usually keep them separate.
What to send us for a quote
- Single line diagram (SLD) or load list with motor ratings and starter type
- Transformer and DG ratings, fault level
- Preferred breaker make (ABB, Schneider, Siemens, L&T and others)
- Indoor / outdoor, IP rating, cable entry (top or bottom)
Have a requirement? Send us the SLD or BOQ.
Our engineers reply with a costed offer within one working day — panels, bus ducts or the full HT & LT turnkey scope.