Square D PGA36120U43A Molded Case Circuit Breaker
- 1200A
- 3 Pole
- I-Line
Square D
PGA36120U43A
Molded Case Circuit Breaker
Brand
Square D
SKU
PGA36120U43A
Quantity
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Square D PGA36120U43A - 1200A 3 Pole Molded Case Circuit Breaker
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Description
Designed for comprehensive system protection, the Square D PGA36120U43A is a 1200A, 3-pole electronic trip molded case circuit breaker. It features a Micrologic 5.0A trip unit with an integrated ammeter, providing adjustable Long-Time, Short-Time, and Instantaneous (LSI) settings for optimal coordination. This P-Frame breaker mounts into Square D I-Line panelboards and switchboards. It serves as a direct upgrade for legacy NA361200 units, offering 35kAIC at 480VAC and true RMS sensing.Specifications
| Brand | Square D |
|---|---|
| Series | PGA |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Amperage Range | 480-1200A |
|---|
| Frame Type | P |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and 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, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, 80% Rated, True RMS Sensing |
Product FAQs
8 answersCan I use the PGA36120U43A to replace an older Square D 1200A I-Line breaker?
Yes, this PowerPacT P-Frame breaker serves as a direct upgrade and replacement for legacy N-Frame breakers, such as the NA361200, in Square D I-Line panelboards and switchboards.
What does the U43A designation mean on this breaker?
The U43A indicates that the breaker is equipped with a Micrologic 5.0 A electronic trip unit. This includes an integrated ammeter and provides adjustable Long-Time, Short-Time, and Instantaneous (LSI) trip functions for precise system coordination.
What wire sizes are accepted by the lugs on this 1200A breaker?
The factory-installed load side lugs accept four 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
How does this breaker mount into the panel?
The PGA36120U43A features an I-Line style plug-in connection on the line side, allowing it to mount directly onto the busbar of compatible Square D I-Line panelboards and switchboards. The load side uses mechanical lugs.
Is this breaker 100% rated or standard 80% rated?
The PGA36120U43A is a standard 80% rated circuit breaker.
Can the trip unit on the PGA36120U43A be swapped out in the field?
Yes, PowerPacT P-Frame breakers with Micrologic trip units are designed to be interchangeable in the field. This allows you to upgrade or change the trip unit without replacing the entire breaker frame.
What phase connection does this I-Line breaker use?
This breaker is configured for a standard ABC phase connection on the I-Line bus.
Does this breaker include a push-to-trip feature?
Yes, all PowerPacT circuit breakers include an integral push-to-trip button on the front cover, allowing you to manually trip the breaker to verify the mechanical operation of the tripping mechanism.
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