Rated for 100 kAIC at 240V, the Square D PJL36100U43A is a 1000A, 3-pole PowerPacT P-frame molded case circuit breaker designed for complex coordination. It easily installs into QED switchboards and P-frame enclosures, serving as an ideal replacement for legacy PE1000 units. The advanced Micrologic 5.0A electronic trip unit provides adjustable long-time, short-time, and instantaneous (LSI) protection functions, complete with an integrated ammeter for accurate system monitoring.
What legacy Square D circuit breaker does the PJL36100U43A replace?
The PJL36100U43A serves as a direct replacement for legacy Square D PE1000 circuit breakers, upgrading older systems to the modern PowerPacT P-frame platform.
Is the PJL36100U43A fully rated or standard rated?
This breaker is standard 80 percent rated. It utilizes a 1200A maximum frame size equipped with a 1000A trip sensor.
Which specific trip unit is installed in the PJL36100U43A?
It includes the Micrologic 5.0A electronic trip unit. The A designation indicates an integrated ammeter for accurate system monitoring alongside its adjustable Long-Time, Short-Time, and Instantaneous (LSI) protection functions.
Does the PJL36100U43A support zone-selective interlocking (ZSI)?
Yes. The included Micrologic 5.0A trip unit features short-time zone-selective interlocking (ZSI) capability, allowing for complex coordination and faster fault clearing times in multi-level power systems.
What is the recommended lug tightening torque for the PJL36100U43A?
The primary load and line lugs for the 3/0 AWG to 500 kcmil conductors should be torqued to 442.5 lbf.in (50 N.m).
Does the PJL36100U43A provide ground fault protection?
No. The U43A suffix indicates a Micrologic 5.0A trip unit, which provides LSI protection only. Ground fault protection would require a breaker with a Micrologic 6.0 trip unit.
Does this breaker come with line and load lugs installed?
Yes, the PJL36100U43A is a unit-mount breaker supplied with factory-installed mechanical lugs on both the line and load sides. Each terminal accepts up to four 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
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