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Square D PGF36120U31A Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Square D
PGF36120U31A
Molded Case Circuit Breaker
Brand
Square D
SKU
PGF36120U31A
Quantity
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Square D PGF36120U31A - 1200A 3 Pole Molded Case Circuit Breaker
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Description
Built for robust industrial power systems, the Square D PGF36120U31A is a 1200A, 3-pole molded case circuit breaker. It provides microprocessor-based overcurrent protection for commercial facilities. This unit mount breaker bolts into Square D switchboards and motor control centers using a standard busbar connection. It includes a nut keeper kit, though standard lugs are not included. Equipped with a Micrologic 3.Specifications
| Brand | Square D |
|---|---|
| Part Number | PGF36120U31A |
| Series | PGF |
| 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 |
|---|
| Terminal Type | Busbar Connection |
|---|---|
| For Use With | Square D Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Lugs, Handle Extension |
|---|---|
| Accessories | Lugs Not Included, Nut Keeper Kit |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL, UKCA |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, True RMS Sensing, Push-to-Trip Button, 80% Rated |
Product FAQs
7 answersWhat is the difference between the PGF36120U31A and the PGL36120U31A?
The PGF36120U31A is a unit-mount breaker designed for direct busbar connection and does not include lugs. The PGL36120U31A includes mechanical lugs on both the line and load ends for cable connections.
Are there higher interrupting rating alternatives to the PGF36120U31A?
Yes. If your system requires a higher interrupting capacity than 35kA at 480V, you can upgrade to the PJF36120U31A for 65kA at 480V or the PLF36120U31A for 100kA at 480V.
Can I install the PGF36120U31A in an I-Line panelboard?
No. The PGF36120U31A is a unit-mount breaker intended for bolt-on busbar connections in switchboards or motor control centers. For an I-Line panelboard, you need the I-Line version, catalog number PGA36120U31A.
What does the U31A suffix mean in the PGF36120U31A catalog number?
The U31A suffix indicates that the breaker is equipped with a Micrologic 3.0 electronic trip unit. This provides standard Long-Time and Instantaneous (LI) trip functions.
How is the PGF36120U31A mounted in a switchboard?
This breaker features a unit-mount design with busbar connections. It bolts directly to the bus structure of Square D switchboards or motor control centers using terminal nut kits, rather than using standard cable lugs.
How does the Micrologic 3.0 trip unit improve system protection?
The Micrologic 3.0 electronic trip unit allows for precise, adjustable long-time and instantaneous settings. This ensures accurate overcurrent protection and better coordination with other breakers in your electrical distribution system compared to standard thermal-magnetic units.
Does the PGF36120U31A include standard cable lugs?
No. The F in the catalog number designates a busbar connection. It includes a terminal nut kit for bolting to busbars, but standard cable lugs must be purchased separately if wire connections are required.
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