Square D LXI36600 Molded Case Circuit Breaker
- 600A
- 3 Pole
- I-Line
Quantity
Square D LXI36600 - 600A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Delivering robust overcurrent protection, the Square D LXI36600 is a 600A, 3-pole electronic trip circuit breaker. It is designed to handle heavy commercial and industrial loads with precise microprocessor-based sensing. The unit features an I-Line mounting style, allowing it to plug into compatible Square D I-Line switchboards and panelboards. For modern replacements, this legacy L-Frame breaker crosses over to the PowerPact LLA36600U43X.Specifications
| Brand | Square D |
|---|---|
| Part Number | LXI36600 |
| Series | LXI |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 100kA @ 600VAC |
| Frame Type | LXI |
|---|---|
| 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 | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | -5C to 60C |
| Construction Features | HACR Rated, Current Limiting, True RMS Sensing, Non-Interchangeable Trip |
Product FAQs
6 answersWhat type of panelboards accept the LXI36600 circuit breaker?
This breaker features an I-Line style plug-in connection, making it compatible exclusively with Square D I-Line panelboards and switchboards. It cannot be used in standard unit-mount or load center applications.
Is the Square D LXI36600 still manufactured, or is there a direct replacement?
The LXI36600 is part of the legacy Square D L-Frame series. While it is no longer the current generation, it is frequently replaced by the modern PowerPacT L-Frame series, such as the LLA36600U44X, for I-Line applications.
How does the electronic trip unit on the LXI36600 function?
It utilizes a solid-state Micrologic trip unit that provides adjustable Long-Time, Short-Time, and Instantaneous (LSI) settings. This allows for precise overcurrent protection and better coordination with downstream breakers in the electrical system compared to standard thermal-magnetic units.
What are the acceptable wire sizes for the standard lugs on this breaker?
The factory-installed lugs accommodate two 2/0 AWG to 500 kcmil conductors per phase. They are rated for use with either aluminum or copper wiring and require proper torqueing during installation.
Does the LXI36600 provide ground fault protection?
No, this specific model features an LSI trip unit, which does not include integrated ground fault protection. If ground fault protection is required, an LSIG trip unit variant is necessary.
How is the line side of the LXI36600 connected during installation?
The breaker utilizes the Square D I-Line plug-on design. The line-side jaws press directly onto the panelboard busbars and are secured with a mounting bracket and screws, requiring no line-side cabling.
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