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Square D PJL36100U44A Molded Case Circuit Breaker
- 1000A
- 3 Pole
- Unit Mount
Square D
PJL36100U44A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJL36100U44A
Quantity
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Square D PJL36100U44A - 1000A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for heavy commercial and industrial applications, this 1000A PowerPacT P-Frame breaker provides robust power distribution capabilities. It mounts into Square D switchboards and motor control centers, serving as a reliable replacement for legacy PE1000 models. The integrated Micrologic 6.0A electronic trip unit features adjustable long-time, short-time, instantaneous, and ground-fault settings alongside a built-in ammeter for precise system monitoring and coordination.Specifications
| Brand | Square D |
|---|---|
| Part Number | PJL36100U44A |
| 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 | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Padlock Attachment, Communication Module |
|---|---|
| Accessories | Micrologic 6.0A 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
8 answersWhat does the U44A suffix mean on the Square D PJL36100U44A?
The U44A designation indicates the breaker is equipped with a Micrologic 6.0A electronic trip unit. This solid state trip unit provides Long-Time, Short-Time, Instantaneous, and Ground-Fault (LSIG) protection along with a built-in ammeter.
How is the PJL36100U44A breaker mounted in an electrical enclosure?
The L in the PJL prefix signifies that this is a unit mount breaker equipped with mechanical lugs on both the line and load sides. It is designed to be bolted directly into switchboards, motor control centers, or standalone enclosures.
Can the trip unit on the PJL36100U44A be swapped out or upgraded?
Yes, the Micrologic 6.0A trip unit is field interchangeable. This allows electricians to swap it for a different Micrologic module if the facility later requires advanced power or harmonic measurement capabilities without replacing the entire P-Frame breaker body.
Are alternative mounting styles available for this specific 1000A J-interrupting frame?
Yes. While the PJL36100U44A is a unit mount configuration, the same core breaker is available as an I-Line plug-on model under catalog number PJA36100U44A, or as a drawout model under catalog number PJD36100U44A.
Is there a built-in method to test the mechanical trip operation?
Yes, all PowerPact P-Frame breakers include an integral push-to-trip button on the front cover. This allows operators or maintenance personnel to manually trip the breaker to verify mechanical functionality.
What is the continuous current rating of this P-Frame molded case circuit breaker?
The standard PJL36100U44A is rated for 80 percent continuous current. Square D uses a specific catalog number suffix when 100 percent rated construction is required.
Does the ground fault function on this 3-pole breaker require an external neutral current transformer?
If applied on a 3-phase, 4-wire system where neutral current must be monitored for ground fault calculation, a separate neutral current transformer must be wired into the Micrologic trip unit. If used on a strictly 3-phase, 3-wire system, the internal sensors are sufficient.
What conductor capacity do the factory lugs on this breaker support?
The standard factory lugs accept up to four copper or aluminum conductors per phase, with each conductor sized between 3/0 AWG and 500 kcmil.
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