Designed for heavy-duty power distribution, the Schneider Electric PGL36100U43A is a 3-pole, 1000A molded case circuit breaker. It is part of the robust PowerPacT P family, engineered to protect commercial and industrial electrical systems. This unit-mount breaker features lugs on both the line and load sides, integrating seamlessly into Square D QED switchboards and motor control centers. At its core is a Micrologic 5.0A electronic trip unit, offering adjustable LSI functions.
What type of trip unit is included with the PGL36100U43A?
This breaker is equipped with a Micrologic 5.0A electronic trip unit. It provides adjustable Long-Time, Short-Time, and Instantaneous (LSI) trip functions and includes an integrated ammeter for current monitoring.
What are the wire size requirements for the lugs on this 1000A breaker?
The factory-installed lugs are designed to accept four 3/0 AWG to 500 kcmil conductors per phase. You can use either aluminum or copper wire.
How does the unit-mount design of the PGL36100U43A differ from I-Line breakers?
As a unit-mount or feed-thru breaker, this device bolts directly to the equipment backpan and uses cable connections on both the line and load sides. It does not plug directly onto a busbar like an I-Line breaker.
What does the U43A suffix indicate in the PGL36100U43A catalog number?
The U43 designates the Micrologic 5.0A electronic trip unit with LSI protection. The final A indicates that the breaker is supplied with a standard rating plug that matches its 1000A maximum continuous current rating.
What interrupting capacity does the G-rating provide for this P-Frame breaker?
The G-rating signifies an interrupting capacity of 65kA at 240VAC, 35kA at 480VAC, and 18kA at 600VAC, making it suitable for systems with moderate available fault current.
Can the PGL36100U43A be used in Square D motor control centers?
Yes, this breaker is compatible with Square D Model 6 Motor Control Centers, as well as QED Switchboards and I-Line Panelboards, provided the equipment is configured for unit-mount devices.
Does the Micrologic 5.0A trip unit include ground fault protection?
No, the U43 suffix indicates LSI functions only (Long-Time, Short-Time, and Instantaneous). If your application requires equipment ground fault protection (LSIG), you would need a breaker with a Micrologic 6.0A trip unit, such as the U44A suffix.
Are the trip settings on the PGL36100U43A adjustable in the field?
Yes, the Micrologic 5.0A electronic trip unit features adjustable dials for the Long-Time pickup and delay, Short-Time pickup and delay, and Instantaneous pickup. This allows precise coordination with other protective devices in your electrical system.
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