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Square D PJA36080CU31A Molded Case Circuit Breaker
- 800A
- 3 Pole
- I-Line
Square D
PJA36080CU31A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJA36080CU31A
Quantity
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Square D PJA36080CU31A - 800A 3 Pole Molded Case Circuit Breaker
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Square D PJA36080CU31A - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| 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 |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards, Square D I-Line 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 3.0 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Load Side Lugs Included, MicroLogic 3.0 Trip Unit (Factory Installed) |
| 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, 100% Rated, True RMS Sensing |
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Square D PJA36080CU31A - 800A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| 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 |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards, Square D I-Line 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 3.0 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Load Side Lugs Included, MicroLogic 3.0 Trip Unit (Factory Installed) |
| 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, 100% Rated, True RMS Sensing |
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Description
Featuring true RMS sensing, the Square D PJA36080CU31A is a 3-pole, 800A PowerPact P-Frame breaker. It includes a MicroLogic 3.0 trip unit for highly accurate protection in industrial systems. This I-Line breaker mounts into Square D panelboards and switchboards. It serves as a substitute for discontinued MA36080 and MH36080 models during facility upgrades. The breaker is 100% rated to carry its full 800A capacity continuously. It delivers 65 kAIC at 480V with adjustable LI settings.Specifications
| Brand | Square D |
|---|---|
| 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 |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards, Square D I-Line 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 3.0 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Load Side Lugs Included, MicroLogic 3.0 Trip Unit (Factory Installed) |
| 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, 100% Rated, True RMS Sensing |
Product FAQs
6 answersWhat does the C in catalog number PJA36080CU31A signify?
The C indicates this breaker is 100 percent rated. It can continuously carry its full 800A capacity, whereas standard molded case breakers are typically limited to carrying 80 percent of their rated current continuously.
Can the PJA36080CU31A be used to replace older Square D 800A breakers?
Yes, this PowerPacT P-Frame model is commonly used as an upgrade or direct substitute for discontinued MA36080 and MH36080 I-Line circuit breakers in existing facilities.
What type of trip unit is installed in the PJA36080CU31A?
This breaker comes factory-equipped with a MicroLogic 3.0 electronic trip unit. It utilizes true RMS sensing and provides adjustable long-time and instantaneous settings to ensure accurate overcurrent and short-circuit protection.
How do I connect the PJA36080CU31A into my electrical panel?
This breaker features a plug-on I-Line connection on the line side, which mounts directly to the busbars in Square D I-Line panelboards and switchboards. The load side is equipped with mechanical lugs designed for wire connections.
How many conductors can be landed on the load terminals?
The factory-installed load side lugs are designed to accept three individual conductors per phase. Each of these ports can accommodate aluminum or copper wire sizes ranging from 3/0 AWG to 500 kcmil.
Is this circuit breaker approved for HVAC applications?
Yes, the PJA36080CU31A is HACR rated. It is fully tested and approved to protect commercial heating, air conditioning, and refrigeration equipment circuits.
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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.