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What is the difference between the suffixes U31X and U33X for PowerPacT breakers with the Micrologic trip units?
The U31X indicates the breaker has long time pickup, long time delay, and instantaneous pickup adjustments and the U33X indicates long time pickup, short time pickup, and instantaneous pickup adjustments.

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Range:
PowerPact Multistandard
PowerPact J-Frame Molded Case Circuit Breakers
PowerPact L-Frame Molded Case Circuit Breakers
PowerPact P-Frame
PowerPact R-Frame
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