| Acronym | Definition |
|---|
| MCCB | Molded Case Circuit Breaker |
| MCCB | Mortgage Code Compliance Board (UK) |
| MCCB | Monogram Credit Card Bank (Georgia) |
| MCCB | MATRICS Consensus Cognitive Battery (Matrics Assessment Inc.) |
| MCCB | 3-Methylcrotonyl-CoA Carboxylase, Beta |
| MCCB | Marine Corps Combat Boot |
| MCCB | Modification/Configuration Control Board |
| MCCB | Mount Community Concert Band (Cincinnati, OH) |
| MCCB | Mill Creek Colliery Band (Edmonton, Canada) |
| MCCB | Montgomery County Concert Band |
| MCCB | Manukau City Concert Band (New Zealand) |
| MCCB | Maury County Community Band (Tennessee) |
| MCCB | Miniature Close Circuit Breaker |
| MCCB | Military Survey Configuration Control Board |
| MCCB | Missile Change Control Board |
| MCCB | Mill City Concert Band (Lowell, MA) |
| MCCB | Multinational Configuration Control Board |
| MCCB | Montgomery County Community Band (Montgomery County, PA) |
| MCCB | Monte Calvario Campamento Bautista |