Square D PJA36060U41A Molded Case Circuit Breaker
- 600A
- 3 Pole
- I-Line
Square D
PJA36060U41A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJA36060U41A
Quantity
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Square D PJA36060U41A - 600A 3 Pole Molded Case Circuit Breaker
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Description
The PJA36060U41A is a 600A, 3-pole molded case circuit breaker from Square D's PowerPacT P-Frame family, built for industrial power distribution. It features an I-Line plug-on connection for rapid installation into compatible Square D I-Line panelboards and switchboards. Rated at 65 kAIC at 480VAC, this breaker includes a Micrologic 3.0A electronic trip unit. This system offers adjustable long-time and instantaneous (LI) settings, true RMS sensing, and integrated current metering.Specifications
| Brand | Square D |
|---|---|
| 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 | P |
|---|---|
| Terminal Type | Lugs |
| For Use With | 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 |
| Trip Unit Model | MicroLogic 3.0A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Communication Module, Motor Operator |
|---|---|
| Accessories | Micrologic 3.0A Ammeter Trip Unit (Factory Installed) |
| Standards | CSA C22.2 No. 5, 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, 80% Rated, True RMS Sensing |
Product FAQs
10 answersWhat type of panelboards accept the PJA36060U41A?
This breaker is designed for Square D I-Line panelboards and switchboards. It features an I-Line style plug-on connection for the line side and mechanical lugs on the load side.
Can I use this breaker in a standard QO or NQ panel?
No. The PJA36060U41A is a PowerPacT P-frame breaker with an I-Line bracket. It is strictly compatible with I-Line distribution panels and switchboards, not QO, NQ, or NF series panels.
What does the U41A suffix indicate on this PowerPacT breaker?
The U41A suffix designates a Micrologic 3.0A electronic trip unit. This includes an integrated ammeter for current monitoring and provides adjustable long-time and instantaneous (LI) trip functions.
Is the Micrologic 3.0A trip unit on this breaker interchangeable?
Yes. PowerPacT P-frame breakers feature interchangeable Micrologic trip units. This allows you to upgrade to advanced metering or LSI and LSIG functions in the field without replacing the entire breaker frame.
What wire sizes are accepted by the load lugs on the PJA36060U41A?
The factory-installed mechanical load lugs accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase. Ensure proper torque specifications are followed during installation as outlined by Schneider Electric.
Does this breaker require a separate mounting hardware kit for I-Line panels?
No. The breaker comes with the I-Line plug-on bracket already integrated for the line-side connection. It mounts directly onto the I-Line bus stack, requiring only standard hand tools to secure the retaining bracket.
What is the difference between the PJA36060U41A and the PJA36060U43A?
The PJA36060U41A includes a Micrologic 3.0A trip unit with LI (long-time, instantaneous) protection. The PJA36060U43A features a Micrologic 5.0A trip unit, which adds short-time protection (LSI) for better system coordination.
How do I manually test the tripping mechanism on this P-frame breaker?
You can manually test the mechanical operation by pressing the push-to-trip button located on the front cover. This verifies the breaker mechanism is functioning correctly before energizing the circuit.
Does this breaker provide ground fault protection?
No. The included Micrologic 3.0A trip unit only provides long-time and instantaneous (LI) protection. If equipment ground fault protection is required, you must upgrade to a Micrologic 6.0 trip unit (LSIG).
Can the PJA36060U41A be reverse fed?
No. I-Line circuit breakers are designed with a specific plug-on line connection and mechanical load lugs. They cannot be reverse fed and must be installed in the standard orientation within the panelboard.
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