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Square D LX36250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- I-Line
Square D
LX36250
Molded Case Circuit Breaker
Brand
Square D
SKU
LX36250
Quantity
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Square D LX36250 - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
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Square D LX36250 - 250A 3 Pole Molded Case Circuit Breaker
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| Brand | Square D |
|---|---|
| Part Number | LX36250 |
| Series | LX |
| Amperage | 250A |
| 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 | 125-250A |
|---|
| Frame Type | LXI |
|---|---|
| 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 LX36250 - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | LX36250-R |
| Series | LX |
| Amperage | 250A |
| 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 | 125-250A |
|---|
| Frame Type | LXI |
|---|---|
| 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
Engineered for industrial applications, the Square D LX36250 is a 3-pole, 250A molded case circuit breaker with Micrologic electronic trip technology. This L-frame breaker installs into Square D I-Line panelboards and switchboards. For system upgrades, it is replaced by the PowerPacT LJA36250U43X using an HNM1BL filler plate. Rated for 65 kAIC at 480VAC, it features adjustable Long-Time, Short-Time, and Instantaneous (LSI) settings with True RMS sensing for precise coordination.Specifications
| Brand | Square D |
|---|---|
| Part Number | LX36250-R |
| Series | LX |
| Amperage | 250A |
| 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 | 125-250A |
|---|
| Frame Type | LXI |
|---|---|
| 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
5 answersWhat type of panelboards is the LX36250 designed for?
This breaker features an I-Line style plug-in connection and is exclusively designed for use in Square D I-Line panelboards and switchboards. It is not compatible with standard QO or NQ series panels.
What does the LSI trip function indicate on this breaker?
The LSI designation means the electronic trip unit includes adjustable Long-Time, Short-Time, and Instantaneous pickup and delay settings. This allows for precise selective coordination in commercial and industrial electrical distribution systems.
What wire sizes are accepted by the lugs on the LX36250?
The terminal lugs accept either one 1 AWG to 600 kcmil conductor or two 1 AWG to 250 kcmil conductors. The lugs are rated for both aluminum and copper wiring.
Is the Square D LX36250 an obsolete frame, and what is the modern replacement?
Yes, the legacy LX frame has been superseded by the modern PowerPact L-frame series. For system upgrades, it is typically replaced by the PowerPact LJA36250U43X, which requires an HNM1BL filler plate when installed in an existing I-Line panel.
What safety precautions should be taken when installing this I-Line breaker?
Installation must be performed by a qualified electrician. Ensure the panelboard is fully de-energized before seating the plug-in jaws onto the busbars, and verify that the breaker is in the OFF position prior to installation to prevent arc flash hazards.
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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