Built for demanding industrial environments, the Square D PJL36100U41A is a 1000A, 3-pole PowerPacT P-frame molded case circuit breaker. It mounts into QED switchboards and Model 6 motor control centers, offering a modern upgrade for older PE Series breakers. This 80% rated unit is equipped with a Micrologic 3.0A electronic trip unit, delivering adjustable LI protection alongside a built-in ammeter for real-time current monitoring. Rated to handle up to 100 kAIC at 240VAC.
What equipment is the PJL36100U41A circuit breaker designed to fit?
This PowerPacT P-Frame breaker is compatible with Square D QED Switchboards, Model 6 Motor Control Centers, and PowerPacT P-Frame Enclosures.
What type of trip unit is installed in the PJL36100U41A?
It features a Micrologic 3.0A electronic trip unit, which provides adjustable Long-Time and Instantaneous (LI) trip functions, along with an integrated ammeter for continuous current measurement.
Does the PJL36100U41A support zone-selective interlocking (ZSI)?
No, the included Micrologic 3.0A trip unit does not support zone-selective interlocking. ZSI capabilities require upgrading to a Micrologic 5.0 or 6.0 trip unit.
What wire sizes are accepted by the lugs on this 1000A breaker?
The factory-installed unit mount lugs accept four 3/0 AWG to 500 kcmil conductors per phase. They are rated for both aluminum and copper (Al/Cu) wiring.
What does the U41A suffix indicate in the PJL36100U41A catalog number?
The U41A suffix designates the factory-installed Micrologic 3.0A electronic trip unit, which includes an ammeter and Long-Time/Instantaneous (LI) protection.
Can the trip unit on the PJL36100U41A be swapped in the field?
Yes, PowerPacT P-Frame breakers with Micrologic trip units are designed to be interchangeable in the field, allowing you to upgrade to a 5.0 or 6.0 trip unit if your protection requirements change.
Is the PJL36100U41A circuit breaker 80% or 100% rated?
This breaker is standard 80% rated. For continuous loads requiring a 100% rating, a different catalog number with a C suffix is required.
What trip functions are adjustable on the Micrologic 3.0A trip unit?
The Micrologic 3.0A trip unit allows you to adjust the Long-Time pickup and delay, as well as the Instantaneous pickup, to coordinate with your specific system requirements.
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