Square D PJL36100U31A Molded Case Circuit Breaker
- 1000A
- 3 Pole
- Unit Mount
Square D
PJL36100U31A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJL36100U31A
Quantity
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Square D PJL36100U31A - 1000A 3 Pole Molded Case Circuit Breaker
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Description
Part of the PowerPacT P-frame family, the Square D PJL36100U31A is a robust 1000A, 3-pole molded case circuit breaker built for commercial and industrial applications. It installs into Square D switchboards and motor control centers, serving as a replacement for legacy PE1000 models. Rated at 100 kAIC at 240V, it features a Micrologic 3.0 electronic trip unit providing adjustable long-time and instantaneous (LI) protection, true RMS sensing, and 80% continuous current rating.Specifications
| Brand | Square D |
|---|---|
| Series | PJL |
| Amperage | 1000A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | P |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Padlock Attachment, Communication Module |
|---|---|
| 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, 80% Rated, True RMS Sensing |
Product FAQs
7 answersWhat frame size is the PJL36100U31A?
This breaker belongs to the Square D PowerPacT P-Frame family. While it is configured with a 1000A sensor and rating plug, the physical P-Frame supports a maximum capacity of 1200A.
How is the PJL36100U31A mounted in a panel?
It features a unit-mount design with feed-thru lug connections on both the line and load sides. This configuration is designed for standard backpan or busbar installations in switchboards and motor control centers, rather than I-Line plug-on mounting.
What type of trip unit is included with the PJL36100U31A?
It is equipped with a Micrologic 3.0 electronic trip unit. The U31A suffix indicates it provides adjustable Long-Time and Instantaneous (LI) protection functions without ground fault protection.
What wire sizes are accepted by the lugs on this 1000A breaker?
The factory-installed lugs accept four 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
Is the PJL36100U31A rated for 100 percent continuous operation?
No, this is a standard 80 percent rated circuit breaker. Continuous loads should not exceed 800A (80 percent of its 1000A nominal rating) for durations longer than three hours.
Can I add field-installable accessories to this P-Frame breaker?
Yes, PowerPacT P-Frame breakers support a variety of field-installable accessories, including auxiliary switches, shunt trips, and undervoltage releases. These accessories share common mounting locations with M-Frame breakers for design standardization.
How do I decode the PJL36100U31A catalog number?
The letter P stands for the PowerPacT P-Frame, J indicates the interrupting rating tier, L means unit-mount with lugs on both ends, 36 denotes a 3-pole 600V device, 100 is the 1000A rating, and U31A specifies the Micrologic 3.0 (LI) trip unit.
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