Square D LJL36600U31XSA Molded Case Circuit Breaker
- 600A
- 3 Pole
- Unit Mount
Quantity
Square D LJL36600U31XSA - 600A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
The Square D LJL36600U31XSA is a high-performance PowerPact L-Frame circuit breaker that includes a factory-installed 110-130VAC shunt trip for remote disconnect applications. This 3-pole, 600A MCCB utilizes a MicroLogic 3.3 electronic trip unit, offering adjustable long-time and instantaneous (LI) settings for precise system coordination. With an interrupting rating of 65 kAIC at 480VAC, it provides true RMS sensing and current-limiting protection for industrial motor control centers.Specifications
| Brand | Square D |
|---|---|
| Series | LJL |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 240-600A |
|---|
| Frame Type | LJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Enclosures |
| Wire Gauge | (2) 2/0 AWG-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 2/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | MicroLogic 3.3 Trip Unit (Factory Installed), Shunt Trip (110-130VAC) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, True RMS Sensing, Visual Trip Indicator, 80% Rated, RoHS Compliant |
Product FAQs
7 answersWhat does the SA suffix indicate on the LJL36600U31XSA circuit breaker?
The SA suffix signifies that this breaker includes a factory-installed 110 to 130VAC shunt trip. This accessory allows for remote tripping of the breaker, which is commonly used for emergency shutdown or remote disconnect applications.
What type of trip unit is equipped on the LJL36600U31XSA?
This breaker features a MicroLogic 3.3 electronic trip unit. It provides adjustable Long-Time and Instantaneous, or LI, protection settings, allowing for precise coordination within your electrical distribution system.
Can I mount the LJL36600U31XSA in an I-Line panelboard?
No. The LJL frame with the third letter L indicates it is a unit-mount breaker designed with lugs on both the line and load sides. For I-Line panelboard installations, you would need an I-Line version, such as the LJA36600U31XSA.
What wire sizes are accepted by the lugs on this 600A breaker?
The factory-installed lugs accept two aluminum or copper conductors ranging from 2/0 AWG to 500 kcmil per phase. Ensure proper torque specifications are followed during installation to prevent overheating.
Does the MicroLogic 3.3 trip unit provide ground fault protection?
No. The MicroLogic 3.3 trip unit on this model only provides Long-Time and Instantaneous protection. If your application requires equipment ground fault protection, you will need a breaker equipped with a MicroLogic 6.3 trip unit.
Is the LJL36600U31XSA a direct replacement for older Square D 600A L-frame breakers?
Yes, the PowerPacT L-frame series is designed to replace legacy Square D 600A unit-mount breakers. However, because this specific model includes a 120VAC shunt trip and an electronic trip unit, you must verify that your existing control wiring and coordination requirements match.
Is the LJL36600U31XSA rated for 80 percent or 100 percent continuous current?
This standard PowerPacT L-frame breaker is rated for 80 percent continuous current. For applications requiring a 100 percent rating, a different catalog number with a C suffix, such as LJL36600CU31XSA, would be required.
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