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Square D LX36400 Molded Case Circuit Breaker
- 400A
- 3 Pole
- I-Line
Square D
LX36400
Molded Case Circuit Breaker
Brand
Square D
SKU
LX36400
Quantity
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Square D LX36400 - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D LX36400 - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | LX36400 |
| Series | LX |
| 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 |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | (1) 1 AWG-600 kcmil or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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 |
|---|---|
| Accessories | Lugs (Load Side) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, True RMS Sensing, Non-Interchangeable Trip |
Quantity
Square D LX36400 - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | LX36400-R |
| Series | LX |
| 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 |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | (1) 1 AWG-600 kcmil or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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 |
|---|---|
| Accessories | Lugs (Load Side) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, True RMS Sensing, Non-Interchangeable Trip |
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Description
Rated for 400 amps, this legacy L-Frame circuit breaker utilizes a Micrologic trip unit to provide highly accurate True RMS sensing. It easily installs into Square D I-Line switchboards, making it ideal for industrial facilities requiring 65kAIC at 480V. When replacing this discontinued model, facilities should use the PowerPact LJA36400U43X along with an HNM1BL filler plate to accommodate the dimensional differences in the enclosure.Specifications
| Brand | Square D |
|---|---|
| Part Number | LX36400 |
| Series | LX |
| 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 |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | (1) 1 AWG-600 kcmil or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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 |
|---|---|
| Accessories | Lugs (Load Side) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, True RMS Sensing, Non-Interchangeable Trip |
Product FAQs
6 answersIs the Square D LX36400 still in active production?
No, the LX36400 is a legacy L-frame circuit breaker that has been discontinued by Schneider Electric. It has been replaced by the modern PowerPact L-frame series.
What is the recommended replacement for the obsolete LX36400?
Facilities upgrading from this discontinued model typically use a PowerPact L-frame breaker, such as the LJA36400U43X. Because of dimensional differences, an HNM1BL filler plate is required when installing the newer PowerPact breaker into an existing I-Line enclosure.
How does the LX36400 mount into the panel?
This breaker features an I-Line style plug-in connection. The line side plugs directly into the bus of a Square D I-Line panelboard or switchboard, while the load side uses mechanical lugs for wire termination.
What adjustments can be made on the LX36400 trip unit?
The electronic Micrologic trip unit features LSI functions, allowing you to adjust the Long-Time, Short-Time, and Instantaneous trip settings. This provides precise overcurrent protection and selective coordination for complex electrical systems.
Can I use the LX36400 in any Square D panel?
No, this breaker is specifically designed for use in Square D I-Line panelboards and switchboards. It will not fit in standard QO, Homeline, or NQ/NF series panels.
What are the load side wiring options for this breaker?
The standard load side lugs accept either one 1 AWG to 600 kcmil wire or two 1 AWG to 250 kcmil wires per phase. The terminals are rated for both aluminum and copper conductors.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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1 review
- SDSergio D.ReviewingSquare D LXD1U7 Magnetic CoilI recommend this productRated 5 out of 5 stars12/24/21Professional
Great work got exactly what I ordered