Square D PLA34080U31B Molded Case Circuit Breaker
- 800A
- 3 Pole
- I-Line
Quantity
Square D PLA34080U31B - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the PowerPacT P-frame series, the Square D PLA34080U31B is an 800A electronic trip MCCB engineered for industrial facilities. This breaker mounts into Square D I-Line panelboards and switchboards. It serves as a drop-in replacement for the PLA34080U31A, ensuring seamless system upgrades. Rated 100kAIC at 480VAC, it features a Micrologic 3.0 trip unit with adjustable Long-Time and Instantaneous (LI) functions, plus True RMS sensing and current-limiting capabilities.Specifications
| Brand | Square D |
|---|---|
| Part Number | PLA34080U31B |
| Series | PLA |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 125kA @ 240VAC, 100kA @ 480VAC |
| Amperage Range | 320-800A |
|---|
| Frame Type | PLA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (3) 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 Thermal, Adjustable Magnetic |
| Trip Unit Model | MicroLogic 3.0 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Padlock Attachment |
|---|---|
| Accessories | Micrologic 3.0 Trip Unit |
| 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, Current Limiting, True RMS Sensing, 80% Rated |
Product FAQs
7 answersWhat panelboards and switchboards are compatible with the PLA34080U31B?
This PowerPacT P-frame breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line bracket mounting style for the line side and mechanical lugs on the load side.
How does the PLA34080U31B mount into the enclosure?
It utilizes an I-Line plug-on connection for the line side, which mounts directly onto the busbar of an I-Line panelboard or switchboard, while the load side uses traditional mechanical feed-thru lugs.
What wire sizes are accepted by the load side lugs on the PLA34080U31B?
The factory installed load lugs accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
What trip unit is included with the PLA34080U31B?
This breaker is equipped with a Micrologic 3.0 electronic trip unit, which provides adjustable Long-Time and Instantaneous (LI) protection functions.
Is the PLA34080U31B suitable for high fault industrial systems?
Yes, the L interrupting tier provides a high capacity 100kAIC rating at 480VAC and 125kAIC at 240VAC, making it ideal for commercial and industrial facilities with significant available fault current.
Does the PLA34080U31B include ground fault protection?
No, the Micrologic 3.0 (U31) trip unit only provides Long-Time and Instantaneous (LI) protection. If your application requires Ground Fault (LSIG) protection, you will need a breaker with a Micrologic 6.0 trip unit, such as one with a U44 or U64 catalog suffix.
Can the PLA34080U31B replace older Square D 800A I-Line breakers?
Yes, it serves as a direct drop-in replacement for older PowerPacT P-frame 800A I-Line breakers with the same interrupting rating, such as the PLA34080U31A, maintaining the same physical footprint and bus connection.
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