Certainly, maintaining MCCBs in today’s industrial plants
presents some challenges, both historic and emerging. The
authors will address these issues by first identifying the testing
standards these devices are designed to comply with before
leaving the factory, and then discussing the installation,
testing and maintenance standards that exist in industry
today. Finally, some common misconceptions regarding
MCCB application and data collected from MCCBs installed at
the paper mill referenced will be reviewed and analyzed.