Square D PJP36080U31A Molded Case Circuit Breaker
- 800A
- 3 Pole
- Unit Mount
Square D
PJP36080U31A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJP36080U31A
Quantity
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Square D PJP36080U31A - 800A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial power distribution, this 800A Square D P-Frame circuit breaker delivers robust electronic trip protection. It installs into QED switchboards and Model 6 motor control centers using a standard unit mount lug configuration. The PJP36080U31A is equipped with a Micrologic 3.0 trip unit, providing adjustable long-time and instantaneous (LI) functions. With a 65kAIC rating at 480VAC and true RMS sensing, it ensures accurate response to overcurrent events.Specifications
| Brand | Square D |
|---|---|
| Series | PJP |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | PJP |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D QED Switchboards, Model 6 Motor Control Centers |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Communication Module |
|---|---|
| Accessories | MicroLogic 3.0 Trip Unit |
| Standards | CSA C22.2 No. 5, HACR, 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, Interchangeable Trip Unit, 80% Rated |
Product FAQs
6 answersHow does the PJP36080U31A mount inside an enclosure?
The PJP36080U31A is a unit-mount, feed-thru circuit breaker. Unlike I-Line plug-on breakers, this model bolts directly to the backpan or mounting surface and is commonly installed in Square D QED Switchboards and Model 6 Motor Control Centers.
What does the U31A suffix indicate on this PowerPacT breaker?
The U31A suffix specifies that the breaker is equipped with a MicroLogic 3.0 electronic trip unit. This provides adjustable Long-Time and Instantaneous (LI) trip functions for precise circuit protection without ground-fault capabilities.
What is the interrupting rating class for the PJP36080U31A?
The second letter in the PJP prefix indicates a J-class interrupting rating. This provides a maximum fault current interruption of 100kAIC at 240VAC, 65kAIC at 480VAC, and 25kAIC at 600VAC.
What are the lug wire size requirements for this 800A breaker?
The standard factory lugs on this breaker accept three 3/0 AWG to 500 kcmil conductors per phase. The terminals are rated for both aluminum and copper (Al/Cu) wiring.
Is the MicroLogic 3.0 trip unit on the PJP36080U31A suitable for ground-fault protection?
No. The MicroLogic 3.0 (LI) trip unit only provides Long-Time and Instantaneous protection. If your application requires Equipment Ground-Fault protection (LSIG), you will need a breaker with a MicroLogic 6.0 trip unit, such as one with a U44A or U64A catalog suffix.
Can I install the PJP36080U31A in a standard Square D NF or NQ panelboard?
No. The PowerPacT P-frame is a large frame size that is not compatible with standard NF or NQ lighting panelboards. As a unit-mount breaker, it is designed for larger distribution equipment like QED Switchboards and Model 6 Motor Control Centers.
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