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Square D PJA36080U33A Molded Case Circuit Breaker
- 800A
- 3 Pole
- I-Line
Square D
PJA36080U33A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJA36080U33A
Quantity
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Square D PJA36080U33A - 800A 3 Pole Molded Case Circuit Breaker
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Description
Offering advanced LSI protection, the Square D PJA36080U33A is an 800A, 3-pole electronic trip circuit breaker. It delivers reliable true RMS sensing for industrial facilities. This unit installs into Square D I-Line panelboards. The I-Line mounting system provides an efficient connection, while load lugs accept up to 500 kcmil wiring. The Micrologic 5.0 trip unit features adjustable long-time, short-time, and instantaneous functions, providing a 65 kAIC interrupt rating at 480V.Specifications
| Brand | Square D |
|---|---|
| Part Number | PJA36080U33A |
| Series | PJA |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 320-800A |
|---|
| Frame Type | PJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | I-Line Panelboards, Switchboards |
| Wire Gauge | (3) 3/0 AWG-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 5.0 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Communication Module |
|---|---|
| Accessories | Micrologic 5.0 Trip Unit, Lugs (Load Side) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, 80% Rated, Interchangeable Trip Unit, True RMS Sensing |
Product FAQs
7 answersWhat type of enclosures or panels accept the PJA36080U33A?
This breaker is specifically designed for Square D I-Line panelboards and switchboards. It utilizes an I-Line plug-on connection for the line side and mechanical lugs for the load side.
Which specific Micrologic trip unit is installed in the PJA36080U33A?
This breaker includes the Micrologic 5.0 electronic trip unit. It provides true RMS sensing and adjustable Long-Time, Short-Time, and Instantaneous (LSI) protection settings.
What does the U33A suffix indicate in the PJA36080U33A catalog number?
The U33A suffix specifies that the breaker is equipped with a Micrologic 5.0 electronic trip unit, which provides the adjustable LSI functions.
What are the acceptable wire sizes for the load lugs on this breaker?
The factory-installed mechanical lugs accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
Is this P-Frame breaker 80% or 100% continuous current rated?
The PJA36080U33A is a standard 80% rated circuit breaker. While Square D offers 100% rated I-Line P-Frame breakers up to 800A, they require a different catalog number.
How is the PJA36080U33A mounted inside the panelboard?
It uses the Square D I-Line mounting system. The line side features plug-on jaws that connect directly to the busbars, which speeds up installation and phase balancing compared to traditional bolt-on methods.
Can the trip curve be customized for system coordination?
Yes, the electronic Micrologic 5.0 trip unit allows licensed electricians to adjust the pickup and delay settings for the LSI functions, ensuring proper selective coordination with downstream devices.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- TGTroy G.Verified BuyerReviewingSquare D PJA36120U44A - 1200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/21/25Help 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
- RNRoss N.ReviewingSquare D PJA36080CU31A - 800A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/12/22Stock!
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.