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Square D PJA36060U31C Molded Case Circuit Breaker
- 600A
- 3 Pole
- I-Line
Square D
PJA36060U31C
Molded Case Circuit Breaker
Brand
Square D
SKU
PJA36060U31C
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Square D PJA36060U31C - 600A 3 Pole Molded Case Circuit Breaker
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Description
Delivering reliable true RMS sensing, the Square D PJA36060U31C is a 600A, 3-pole molded case circuit breaker built for commercial and industrial power systems. This 80% rated P-Frame device features an electronic trip unit with adjustable Long-Time and Instantaneous (LI) protection functions to ensure precise coordination. It mounts into standard Square D I-Line panelboards and switchboards, providing robust fault protection with an interrupting capacity of 65kAIC at 480VAC.Specifications
| Brand | Square D |
|---|---|
| Part Number | PJA36060U31C |
| Series | PJA |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 240-600A |
|---|
| Frame Type | PJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, 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, Padlock Attachment, Motor Operator, Communication Module |
|---|---|
| Accessories | Copper Lugs Included |
| 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, Visual Trip Indicator, Adjustable Trip |
Product FAQs
6 answersWhat type of enclosures or panels accept the PJA36060U31C?
This P-Frame breaker is designed exclusively for Square D I-Line panelboards and switchboards. Its plug-in mounting style allows it to connect directly to the I-Line bus assembly rather than using standard unit-mount hardware.
Can I run parallel cables to the PJA36060U31C?
Yes, the factory-installed load lugs are designed to accept up to three aluminum or copper conductors per phase. The supported wire range is 3/0 AWG to 500 kcmil, which accommodates the parallel cable runs common in 600A commercial applications.
What does the "U31" in the PJA36060U31C part number indicate?
The "U31" designates a Micrologic 3.0 electronic trip unit. This solid-state trip unit provides adjustable Long-Time and Instantaneous (LI) protection functions, allowing for precise coordination in industrial power systems.
What does the "J" in the PJA36060U31C catalog number represent?
In the PowerPacT P-Frame nomenclature, the "J" indicates the interrupting rating tier. This specific tier provides a short-circuit current rating of 100kA at 240VAC, 65kA at 480VAC, and 25kA at 600VAC.
Does the PJA36060U31C offer ground fault protection?
No, the included Micrologic 3.0 trip unit only provides Long-Time and Instantaneous (LI) protection. If your application requires ground fault protection, you will need a breaker equipped with an LSIG trip unit.
How is the line side of the PJA36060U31C connected?
Because it is an I-Line breaker, the line side does not use traditional wire lugs. Instead, it features a plug-on connection that snaps directly onto the busbar of a compatible Square D panelboard or switchboard, saving significant installation time.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- TGTroy G.Verified BuyerReviewingSquare D PJA36120U44A - 1200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/21/25Help with flood conditions
The whole process with Technitrol was Awesome. Jim the owner was extremely helpful he caught some problems with one of the breakers that I didn't notice very helpful. James and Collin were great also. The whole company really step up helping me determine what path I should take to replace/refurbish breakers that went through a flood. I never experienced a flood like this they were an awesome resource and help to me and my employer the City of Wauwatosa
- RNRoss N.ReviewingSquare D PJA36080CU31A - 800A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/12/22Stock!
Superbreakers has gotten my company out of a few binds recently. When stock is unavailable at my local supplier I've been turning to Superbreakers to save the day. Great customer service and timely shipments.