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Square D LE36600LI Molded Case Circuit Breaker
- 600A
- 3 Pole
- I-Line
Square D
LE36600LI
Molded Case Circuit Breaker
Brand
Square D
SKU
LE36600LI
Quantity
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Square D LE36600LI - 600A 3 Pole Molded Case Circuit Breaker
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Description
Part of the legacy L-frame series, this 600A molded case circuit breaker provides reliable power distribution. It features a Micrologic electronic trip unit with adjustable long-time and instantaneous (LI) settings. The I-Line mounting style allows quick installation into compatible Square D panelboards. For modern upgrades, this unit is replaced by the PowerPact LLA36600U31X, requiring an HNM1BL blank filler. Rated for 65kAIC at 480VAC, it ensures robust fault clearing with true RMS sensing.Specifications
| Brand | Square D |
|---|---|
| Part Number | LE36600LI |
| Series | LE |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC |
| Amperage Range | 300-600A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | -5C to 60C |
| Construction Features | HACR Rated, True RMS Sensing |
Product FAQs
7 answersWhat panelboards are compatible with the LE36600LI circuit breaker?
This breaker is designed exclusively for use with Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection and will not fit standard QO or NQ panels.
What wire sizes and materials are accepted by the lugs on the LE36600LI?
The factory lugs accept two 2/0 AWG to 500 kcmil conductors per phase. They are rated for both aluminum and copper wire.
What do the LI functions indicate on this breaker trip unit?
The LI designation means the electronic trip unit includes adjustable Long-Time and Instantaneous trip functions. This allows you to customize the protection curve for your specific electrical application.
Can the trip settings on the LE36600LI be adjusted in the field?
Yes, this breaker features an adjustable electronic trip unit. Licensed electricians can modify the Long-Time and Instantaneous settings to coordinate with other protective devices in the electrical system.
Is the Square D LE36600LI still in active production?
The LE36600LI is part of the legacy L-Frame series. For modern upgrades, it is typically replaced by a PowerPact L-Frame breaker, such as the LLA36600U31X, which requires an HNM1BL blank filler for I-Line panelboard installation.
Does the LE36600LI require a separate mounting bracket for installation?
No, it utilizes an I-Line style plug-in connection that mounts directly to the bus structure of a compatible Square D I-Line panelboard or switchboard.
What safety precautions should be taken before installing the LE36600LI?
Always ensure the I-Line panelboard or switchboard is fully de-energized before installation. Verify that the breaker 600A rating and interrupting capacity meet or exceed the available fault current of your system to prevent equipment damage.
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