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Square D PJA36120U43A Molded Case Circuit Breaker
- 1200A
- 3 Pole
- I-Line
Square D
PJA36120U43A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJA36120U43A
Quantity
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Square D PJA36120U43A - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D PJA36120U43A - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| 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 | Square D I-Line Panelboards, Square D I-Line 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 | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 5.0A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, True RMS Sensing, 80% Rated |
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Square D PJA36120U43A - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| 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 | Square D I-Line Panelboards, Square D I-Line 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 | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 5.0A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, True RMS Sensing, 80% Rated |
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Description
A reliable solution for industrial facilities, the Square D PJA36120U43A is a 1200A molded case circuit breaker with electronic trip technology. It provides robust power distribution and system protection. Designed for Square D I-Line panelboards, this breaker utilizes an I-Line connection on the line side. It is an ideal replacement for legacy MA36120 and MH36120 models. This 80% rated MCCB includes a Micrologic 5.0A trip unit with adjustable LSI functions.Specifications
| Brand | Square D |
|---|---|
| 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 | Square D I-Line Panelboards, Square D I-Line 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 | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 5.0A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, True RMS Sensing, 80% Rated |
Product FAQs
6 answersWhat does the U43A suffix mean in the PJA36120U43A catalog number?
The U43A suffix indicates that the breaker is equipped with a MicroLogic 5.0A electronic trip unit. This provides adjustable Long-Time, Short-Time, and Instantaneous (LSI) protection. The letter A signifies that it includes an integrated ammeter for energy monitoring.
How much panel bus space does the PJA36120U43A require?
As a PowerPacT P-Frame circuit breaker, it requires 9 inches of mounting height on the bus in compatible Square D I-Line panelboards and switchboards.
Which older Square D circuit breakers can the PJA36120U43A replace?
This PowerPacT P-Frame breaker is an ideal drop-in replacement for legacy 1200A Square D MA36120 and MH36120 molded case circuit breakers in I-Line applications.
What type of line and load connections does this breaker feature?
The line side features an I-Line style plug-in connection that mounts directly to the panel bus. The load side includes factory-installed mechanical lugs designed to accept four 3/0 AWG to 500 kcmil aluminum or copper wires per phase.
Is the PJA36120U43A an 80% or 100% rated circuit breaker?
The PJA36120U43A is a standard 80% rated molded case circuit breaker, meaning it is designed to carry up to 80% of its 1200A capacity continuously.
How does the PJA series differ from the PGA and PLA series?
The second letter in the catalog prefix denotes the interrupting rating tier of the PowerPacT P-Frame family. The PJA features a J-tier interrupting rating, which provides higher fault current protection than standard PGA models, but lower capacity than the high-tier PLA versions.
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