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Square D PJA36120U44A Molded Case Circuit Breaker
- 1200A
- 3 Pole
- I-Line
Square D
PJA36120U44A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJA36120U44A
Quantity
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Square D PJA36120U44A - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D PJA36120U44A - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | PJA36120U44A |
| Series | PJA |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 480-1200A |
|---|
| Frame Type | PJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | I-Line Panelboards, Switchboards |
| Wire Gauge | (4) 3/0 AWG-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 6.0A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Communication Module |
|---|---|
| Accessories | Micrologic 6.0A 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 |
Quantity
Square D PJA36120U44A - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | PJA36120U44A-R |
| Series | PJA |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 480-1200A |
|---|
| Frame Type | PJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | I-Line Panelboards, Switchboards |
| Wire Gauge | (4) 3/0 AWG-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 6.0A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Communication Module |
|---|---|
| Accessories | Micrologic 6.0A 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 |
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Description
Engineered for industrial applications, the Square D PJA36120U44A is a 1200A, 3-pole molded case circuit breaker from the PowerPacT P-Frame family. It delivers robust power distribution and advanced circuit protection. This unit mounts into Square D I-Line panelboards and switchboards, utilizing plug-on line terminations and load-side lugs. Rated 65 kAIC at 480V, it features a Micrologic 6.0A electronic trip unit with adjustable LSIG functions, an integrated ammeter, and true RMS sensing.Specifications
| Brand | Square D |
|---|---|
| Part Number | PJA36120U44A |
| Series | PJA |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 480-1200A |
|---|
| Frame Type | PJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | I-Line Panelboards, Switchboards |
| Wire Gauge | (4) 3/0 AWG-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 6.0A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Communication Module |
|---|---|
| Accessories | Micrologic 6.0A 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
8 answersHow does this breaker connect to the electrical system?
The PJA36120U44A features an I-Line plug-on connection for the line side and mechanical terminal lugs on the load side.
What type and size of wire is supported by this breaker's terminals?
The factory-installed load side lugs are dual-rated for both aluminum and copper (Al/Cu) conductors. They accept up to four 3/0 AWG to 500 kcmil wires per phase.
Can the PJA36120U44A be installed in standard I-Line panelboards?
Yes. The "A" suffix in the PJA prefix denotes an I-Line style plug-in connection, allowing for rapid phase connections in compatible Square D I-Line panelboards and switchboards.
Are the trip units on this PowerPacT P-frame breaker field-replaceable?
Yes. Unlike basic thermal-magnetic units, the Micrologic electronic trip units on PowerPacT P-frame circuit breakers are interchangeable. This allows you to upgrade or change protection functions in the field without replacing the entire breaker frame.
What does the "U44A" suffix in the catalog number specify?
The U44A designation indicates the breaker is equipped with an interchangeable Micrologic 6.0 A (Ammeter) electronic trip unit. This provides integrated true RMS current metering and adjustable LSIG (Long-Time, Short-Time, Instantaneous, and Ground Fault) protection.
Is this circuit breaker rated for 80% or 100% continuous current?
This is a standard 80% rated breaker. In the PowerPacT catalog structure, a 100% rated model would feature a "C" before the trip unit designation (e.g., PJA36120CU44A).
Does the Micrologic 6.0 A trip unit provide ground fault protection?
Yes. The "G" in the LSIG designation means this trip unit includes adjustable equipment ground fault protection. This helps safeguard systems against destructive low-level arcing faults that may not draw enough current to trip a standard magnetic element.
What is the difference between the PJA36120U44A and the PGA36120U44A?
Both are 1200A, 3-pole I-Line breakers with identical Micrologic 6.0 A LSIG trip units, but they have different interrupting ratings. The PJA frame provides 65kA at 480VAC (J rating), whereas the PGA frame provides 35kA at 480VAC (G rating).
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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.