Schneider Electric / Square DPJL36120U44A
Square D PJL36120CU44A Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Square D
PJL36120CU44A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJL36120CU44A
Quantity
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Square D PJL36120CU44A - 1200A 3 Pole Molded Case Circuit Breaker
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Description
Built for continuous high-amperage applications, this 100% rated PowerPacT P-Frame breaker maximizes power distribution efficiency. The unit-mount assembly fits perfectly into Square D QED switchboards and Model 6 motor control centers, offering a modern upgrade for legacy PE Series installations. It incorporates a highly configurable Micrologic 6.0A trip unit, delivering precise long-time, short-time, instantaneous, and ground-fault protection alongside an integrated ammeter display.Specifications
| Brand | Square D |
|---|---|
| Part Number | PJL36120CU44A |
| Series | PJL |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 480-1200A |
|---|
| Frame Type | PJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D QED Switchboards, Model 6 Motor Control Centers, PowerPacT P-Frame Enclosures |
| 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 |
| Trip Unit Model | MicroLogic 6.0A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Padlock Attachment |
|---|---|
| Accessories | Micrologic 6.0A Trip Unit, Lugs |
| 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 | 100% Rated, HACR Rated, True RMS Sensing, Interchangeable Trip Unit, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
8 answersWhat enclosures and switchboards are compatible with the PJL36120CU44A?
This PowerPacT P-Frame breaker is designed for use in Square D QED switchboards, Model 6 motor control centers, and dedicated PowerPacT P-Frame enclosures.
Is the PJL36120CU44A rated for 100 percent continuous current?
Yes, the C in the catalog number indicates that this is a 100 percent rated circuit breaker, meaning it can carry its full 1200A continuous current rating in an appropriately sized and ventilated enclosure.
What are the wire size requirements for the lugs on this breaker?
The factory-installed lugs accept four conductors per phase. Each conductor must be sized between 3/0 AWG and 500 kcmil, and you can use either aluminum or copper wire.
What protection functions are included with the Micrologic 6.0 A trip unit?
The Micrologic 6.0 A trip unit provides LSIG protection, which includes adjustable Long-time, Short-time, Instantaneous, and Ground-fault settings. The A designation indicates it also features an integrated ammeter for current monitoring.
Is the PJL36120CU44A a plug-on or unit-mount circuit breaker?
This is a unit-mount circuit breaker. It is designed to be bolted directly to the mounting pan or structure of the enclosure or switchboard, rather than plugging onto a busbar like I-Line variants.
Can this breaker be used on a 480V system with 50kA of available fault current?
Yes, this breaker has an interrupting rating of 65kA at 480VAC, making it safely rated for systems with up to 65,000 amps of available fault current at that voltage.
Does the PJL36120CU44A provide equipment ground-fault protection?
Yes, the included Micrologic 6.0 A trip unit features an adjustable ground-fault protection function, which is the G in LSIG. This is designed to protect equipment from low-level ground faults, but it is not intended for personnel protection like a GFCI receptacle.
What does the J in the PJL36120CU44A catalog number signify?
The J indicates the interrupting rating tier for this PowerPacT P-Frame breaker. It signifies a rating of 100kA at 240V, 65kA at 480V, and 25kA at 600V, which is higher than the standard G tier but lower than the L tier.
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