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Square D PGL36120U31A Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Square D
PGL36120U31A
Molded Case Circuit Breaker
Brand
Square D
SKU
PGL36120U31A
Quantity
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Square D PGL36120U31A - 1200A 3 Pole Molded Case Circuit Breaker
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Description
The PGL36120U31A delivers robust commercial and industrial circuit protection as part of the Square D PowerPacT P-Frame family. This 1200A, 3-pole molded case circuit breaker is engineered for unit-mount applications, fitting seamlessly into QED switchboards, Model 6 motor control centers, and standard P-Frame enclosures. It features a factory-installed Micrologic 3.0 electronic trip unit, providing adjustable long-time and instantaneous (LI) protection with true RMS sensing capabilities.Specifications
| Brand | Square D |
|---|---|
| Part Number | PGL36120U31A |
| Series | PGL |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Amperage Range | 480-1200A |
|---|
| Frame Type | PGL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D P-Frame Enclosures, QED Switchboards, Model 6 Motor Control Centers |
| 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 | 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, Motor Operator, Padlock Attachment, Communication Module |
|---|---|
| Accessories | Line and Load 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 | 80% Rated, HACR Rated, True RMS Sensing |
Product FAQs
6 answersWhat does the U31A suffix mean in the PGL36120U31A catalog number?
It indicates the breaker is equipped with a Micrologic 3.0 electronic trip unit. This provides adjustable Long-Time and Instantaneous (LI) trip functions for precise overcurrent protection.
What lug kit is used on the PGL36120U31A, and what is its conductor capacity?
This 1200A breaker uses the AL1200P24K mechanical lug kit. Each lug accepts four 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
What is the difference between the PGL36120U31A and the PGA36120U31A?
The PGL36120U31A is a unit-mount breaker with lugs on both the line and load sides. The PGA36120U31A is the I-Line version, which features a plug-on connection for the line side to mount directly onto an I-Line panelboard bus.
How does the PGL36120U31A differ from the PJL36120U31A or PLL36120U31A?
The difference lies in the interrupting rating. The PGL has a G-rating (35kA at 480VAC), the PJL has a J-rating (65kA at 480VAC), and the PLL has an L-rating (100kA at 480VAC).
Can the PGL36120U31A be reverse fed for backfeed applications?
Yes, PowerPacT P-Frame breakers can be reverse fed. However, because this model features a Micrologic electronic trip unit, you must verify and disable any reverse power flow protection settings to prevent nuisance tripping during backfeed operations.
Is the PGL36120U31A rated for 80 percent or 100 percent continuous current?
This standard PGL36120U31A is 80 percent rated. Square D designates 100 percent rated versions with a C in the catalog number, such as PGL36120CU31A.
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