Delivering advanced ground-fault protection, the PGL36080U44A is a robust PowerPacT P-Frame molded case circuit breaker designed for heavy-duty industrial applications. This unit-mount breaker installs into Square D P-Frame enclosures, QED switchboards, and Model 6 motor control centers. It accepts 3/0 AWG to 500 kcmil aluminum or copper wiring. Equipped with a factory-installed Micrologic 6.0A electronic trip unit, it provides adjustable LSIG protection, true RMS sensing, and an ammeter.
What does the "U44A" suffix indicate on the PGL36080U44A catalog number?
The U44A suffix identifies the installation of a Micrologic 6.0 A electronic trip unit. This specific module provides adjustable Long-time, Short-time, Instantaneous, and Ground-fault (LSIG) protection, along with a built-in ammeter for local current monitoring.
Can I install this unit-mount breaker directly onto an I-Line panelboard bus?
No, the PGL36080U44A is configured with standard feed-thru lugs on both ends and cannot be mounted on an I-Line bus. For I-Line panelboard and switchboard applications requiring these exact specifications, you must source catalog number PGA36080U44A instead.
Is the continuous current rating of this circuit breaker rated for 80 percent or 100 percent?
This standard model is an 80-percent rated circuit breaker. According to National Electrical Code requirements, any continuous loads (operating for three hours or more) must not exceed 80 percent of its 800-amp rating. Models designed for 100-percent continuous duty typically include a "C" in the suffix.
Does this model include internal protection against ground faults?
Yes, the integrated Micrologic 6.0 A trip unit includes adjustable ground-fault equipment protection. Electricians can configure both the ground-fault pickup and delay settings to safely coordinate with other protective devices in the electrical system.
Can I adjust the maximum continuous current rating on this breaker?
The PGL36080U44A utilizes an 800-amp sensor within a 1200-amp physical PowerPacT P-Frame architecture. While the maximum rating is locked at 800 amps by the internal sensor, the Micrologic electronic trip unit allows downward adjustment of the long-time trip settings for lower ampacity requirements.
Can the factory-installed mechanical lugs be swapped for compression lugs?
Yes, the standard factory-installed mechanical lugs on this PowerPacT P-frame breaker are removable. They can be field-replaced with approved Square D compression lug kits or distribution terminal blocks depending on your specific wiring requirements.
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