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Square D LE36400LI Molded Case Circuit Breaker
- 400A
- 3 Pole
- I-Line
Square D
LE36400LI
Molded Case Circuit Breaker
Brand
Square D
SKU
LE36400LI
Quantity
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Square D LE36400LI - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
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Square D LE36400LI - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | LE36400LI |
| Series | LE |
| Amperage | 400A |
| 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 | 200-400A |
|---|
| Frame Type | LE |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 1 AWG - 600 kcmil (Al/Cu) or (2) 1 AWG - 250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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 |
Quantity
Square D LE36400LI - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Series | LE |
| Amperage | 400A |
| 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 | 200-400A |
|---|
| Frame Type | LE |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 1 AWG - 600 kcmil (Al/Cu) or (2) 1 AWG - 250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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 |
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Description
Rated for 400 amps of continuous current, this legacy L-Frame breaker brings sophisticated electronic protection to heavy-duty electrical systems. It mounts into standard Square D I-Line panelboards, offering a secure mechanical and electrical connection without extensive wiring. For facilities maintaining older infrastructure, this unit serves as an exact match, bypassing the need for adapter kits associated with the newer LLA36400U31X replacement. The Micrologic unit features LI functions.Specifications
| Brand | Square D |
|---|---|
| Part Number | LE36400LI |
| Series | LE |
| Amperage | 400A |
| 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 | 200-400A |
|---|
| Frame Type | LE |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 1 AWG - 600 kcmil (Al/Cu) or (2) 1 AWG - 250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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
6 answersWhat type of panelboards are compatible with the LE36400LI?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It utilizes a plug-on line side connection that mounts directly to the I-Line bus assembly.
What are the acceptable wire sizes for the load lugs on this breaker?
The standard lugs accept either a single 1 AWG to 600 kcmil aluminum or copper wire, or dual 1 AWG to 250 kcmil aluminum or copper wires per phase.
What does the LI designation indicate on the LE36400LI trip unit?
The LI code means the electronic trip unit includes adjustable Long-Time (L) and Instantaneous (I) protection functions. This allows panel builders to fine-tune the overload and short circuit response curves to match specific system requirements.
Is there a modern replacement for the legacy LE36400LI circuit breaker?
The LE36400LI is a legacy L-frame breaker. The modern equivalent is the PowerPact L-frame, specifically the LLA36400U31X. However, using the newer PowerPact model in an older I-Line panel may require an adapter kit, making the LE36400LI an ideal exact match replacement for existing infrastructure.
How does the I-Line style plug-in connection work on this breaker?
The I-Line mounting system features plug-on jaws on the line side that snap directly onto the panelboard bus bars. The load side uses standard mechanical lugs for wire termination, allowing for rapid installation without extensive line side wiring.
What is the advantage of the solid state protection on the LE36400LI?
Solid state, or electronic trip technology, provides highly accurate and repeatable trip curves compared to traditional thermal magnetic breakers. It is unaffected by ambient temperature variations, ensuring precise protection for sensitive heavy duty electrical systems.
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