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Square D LI36400 Molded Case Circuit Breaker
- 400A
- 3 Pole
- I-Line
Square D
LI36400
Molded Case Circuit Breaker
Brand
Square D
SKU
LI36400
Quantity
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Square D LI36400 - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
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Square D LI36400 - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | LI36400 |
| Series | LI |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480Y/277VAC, 200kA @ 480VAC, 100kA @ 600Y/347VAC, 100kA @ 600VAC |
| Frame Type | LI |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | (2) 4/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 4/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, HACR Rated |
| Special Features | Current Limiting |
Quantity
Square D LI36400 - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Series | LI |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480Y/277VAC, 200kA @ 480VAC, 100kA @ 600Y/347VAC, 100kA @ 600VAC |
| Frame Type | LI |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | (2) 4/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 4/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, HACR Rated |
| Special Features | Current Limiting |
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Description
Delivering robust current-limiting capabilities, this 400A three-pole breaker protects commercial and industrial distribution systems. It installs into Square D I-Line panelboards and switchboards, utilizing a plug-on phase connection for rapid deployment. Featuring a thermal-magnetic trip unit with adjustable instantaneous settings, it provides 200kAIC interrupting capacity at 480VAC. Note that this legacy L-Frame model is officially replaced by the PowerPacT LRA36400U31X series.Specifications
| Brand | Square D |
|---|---|
| Series | LI |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480Y/277VAC, 200kA @ 480VAC, 100kA @ 600Y/347VAC, 100kA @ 600VAC |
| Frame Type | LI |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | (2) 4/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 4/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, NFPA 70, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, HACR Rated |
| Special Features | Current Limiting |
Product FAQs
5 answersWhat panelboards are compatible with the LI36400 circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It utilizes a plug-on phase connection that mounts directly to the I-Line bus.
What wire sizes and materials do the lugs on the LI36400 accept?
The standard lugs on this breaker accommodate two 4/0 AWG to 500 kcmil conductors per phase, and they are rated for both aluminum and copper wire.
How does the trip unit function on the LI36400?
It features a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
Is the LI36400 a current production model?
The LI36400 is a legacy L-frame circuit breaker. In newer installations, it is typically replaced by the Square D PowerPacT L-frame series, though it remains widely used for maintaining existing I-Line panelboards.
What does the 200kAIC rating at 480V indicate for this breaker?
The 200kAIC rating means this breaker is highly current-limiting and can safely interrupt up to 200,000 amps of fault current at 480VAC, making it suitable for industrial systems with high available fault currents.
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