Used Motor Control Center (Mcc)

Match the MCC's bus ampacity, short-circuit rating and feeder capacity to the combined motor loads and utility characteristics. Account for starting currents, VFDs, future growth and coordination with upstream protection.

Check busbar condition, breaker and starter functionality, wiring, signs of overheating, corrosion, and vendor documentation. Request insulation and continuity tests, and verify serial numbers, drawings and modification records.

MCCs are heavy and tall—plan for crating, secure lifting points, transport permits and route clearances. Protect against moisture and vibration; consider partial disassembly of doors or sections and reassembly at site.

Prepare a level, vibration-free foundation with adequate clearance, grounding system, conduit/wiring paths, ventilation and cooling. Coordinate utility disconnects and lockout/tagout procedures for safe hookup.

Perform quarterly visual checks, thermal imaging, tighten connections, exercise breakers/starters, clean dust, and do annual insulation and functional testing. Keep spare fuses, contactors and breakers on hand.

Essential. Obtain wiring diagrams, test records, parts lists and firmware versions. Verify availability of replacement breakers, starters and control modules to minimize downtime.