You need to control multiple motors—pumps, fans, conveyors, or process equipment. Do you put each (or each group) in its own enclosure, or do you put them all in one motor control center (MCC)? Here’s how to think about it so you can choose the right approach for your space, budget, and operations.
What’s the difference?
Individual control panels are separate enclosures, each housing the control and protection for one or a few motors. They can be mounted on the wall, on a skid, or near the equipment. You run power and control wiring to each panel from a central distribution point.
A motor control center (MCC) is a lineup of sections or “buckets,” each containing the starter, protection, and often disconnect for one motor (or a small group). All buckets are in one or more enclosures, fed from a common bus. MCCs are common in plants, water/wastewater, and anywhere many motors are concentrated in one area.
When an MCC makes sense
- Many motors in one area. You have a motor room, electrical room, or process area with a dozen or more motors. Putting them in an MCC keeps everything in one place, simplifies power distribution (one main feed, bus, and set of buckets), and makes it easier to add or rearrange buckets later.
- You want a clear, standardized layout. MCC buckets are typically similar in size and arrangement. That makes training, maintenance, and spare parts simpler. New motors often mean adding a bucket rather than designing a whole new panel.
- Space and access are centralized. If all your motors are fed from one electrical room or one end of the building, an MCC there can be more efficient than running multiple feeders to scattered individual panels.
- Future expansion is likely. MCCs are built for growth. Adding motors usually means adding buckets and tapping the bus, not installing another standalone panel and another feeder from the switchgear.
When individual panels make more sense
- Motors are spread out. If motors are in different rooms, on different floors, or next to the equipment they drive, individual panels at each location can reduce cable runs and make it obvious which panel goes with which machine.
- Small motor count. For a handful of motors, the cost and footprint of a full MCC may not pay off. A few well-designed individual panels (or one multi-motor panel) can be simpler and cheaper.
- Skids or packaged equipment. Equipment that ships as a unit (e.g. a pump skid, HVAC unit, or process module) often has its own control panel. Keeping control in that panel keeps the package self-contained and easier to move or replicate.
- Different environments. If some motors are in a clean room and others in a harsh or classified area, separate panels let you choose the right enclosure and location for each without compromising the rest.
The in-between: multi-motor panels
You don’t have to choose only “one panel per motor” or “one big MCC.” A multi-motor panel is a single enclosure with starters and protection for several motors (e.g. 4–8). It’s a middle option: more compact than many small panels, but smaller and more flexible than a full MCC. It works well when you have a cluster of motors in one area but don’t need a full lineup or expect to add lots more later.
Bottom line
Choose an MCC when you have many motors in one place, want a standardized, expandable layout, and are feeding from a central electrical room. Choose individual (or multi-motor) panels when motors are scattered, you have few of them, or they’re part of skids or packaged equipment. If you’re unsure, a good panel builder can walk through your one-line, layout, and growth plans and recommend the right approach.
At Plazmaa we design and build both MCCs and individual control panels. If you’re in Texas or the surrounding region and want to talk through your next project, get in touch.