Engineered for demanding industrial applications, the Square D PJA36080CU33A is a 3-pole, 800A molded case circuit breaker from the PowerPacT P-Frame family. It features an I-Line plug-on mounting style for the line side and mechanical lugs on the load side, ensuring secure integration into Square D I-Line panelboards and switchboards. This 100% rated MCCB is equipped with a MicroLogic 5.
Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Communication Module, Motor Operator
Accessories
Lugs (Load Side)
Standards
CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, RoHS, UL 489
Approval
CE, CSA, IEC, NOM, UL
Temp Rating
-25C to 70C
Construction Features
HACR Rated, 100% Rated, True RMS Sensing
Product FAQs
8 answers
What does the 'C' in the PJA36080CU33A catalog number signify?
The 'C' indicates that this breaker is 100% rated. This allows the breaker to carry its full 800A capacity continuously in an appropriately sized enclosure, rather than being limited to the standard 80% continuous current derating.
Which trip unit is installed in the PJA36080CU33A?
This breaker is equipped with a Micrologic 5.0 electronic trip unit, denoted by the 'U33A' suffix. It provides adjustable Long-Time, Short-Time, and Instantaneous (LSI) protection.
How is the PJA36080CU33A mounted in a panelboard?
It features an I-Line plug-on connection for the line side, allowing it to snap directly onto the bus of Square D I-Line panelboards and switchboards. The load side uses mechanical lugs for wire termination.
What conductor sizes are compatible with the load lugs on this breaker?
The standard load-side lugs accept three 3/0 AWG to 500 kcmil aluminum or copper wires per phase.
Can I upgrade the trip unit on this PowerPacT P-Frame breaker?
Yes, the Micrologic trip units on PowerPacT P-Frame breakers are field-interchangeable. You can swap the standard Micrologic 5.0 unit for an advanced model if you need features like ground-fault protection or power metering later.
Does this breaker include zone-selective interlocking (ZSI)?
Yes, the included Micrologic 5.0 trip unit features short-time zone-selective interlocking (ZSI). This allows the breaker to communicate with downstream breakers to isolate faults quickly while minimizing system-wide downtime.
Is this breaker branded as Square D or Schneider Electric?
PowerPacT P-Frame breakers may be labeled under either the Square D or Schneider Electric brand. Both brands represent the exact same equipment manufactured by Schneider Electric.
What standards does the PJA36080CU33A meet?
This PowerPacT P-Frame breaker is dual rated to meet both UL 489 and IEC 60947-2 standards for worldwide application.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Square D PJA36120U44A - 1200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/21/25
Help with flood conditions
The whole process with Technitrol was Awesome. Jim the owner was extremely helpful he caught some problems with one of the breakers that I didn't notice very helpful. James and Collin were great also. The whole company really step up helping me determine what path I should take to replace/refurbish breakers that went through a flood. I never experienced a flood like this they were an awesome resource and help to me and my employer the City of Wauwatosa
RN
Ross N.
Reviewing
Square D PJA36080CU31A - 800A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
4/12/22
Stock!
Superbreakers has gotten my company out of a few binds recently. When stock is unavailable at my local supplier I've been turning to Superbreakers to save the day. Great customer service and timely shipments.