Square D LE36250LS Molded Case Circuit Breaker
- 250A
- 3 Pole
- I-Line
Quantity
Square D LE36250LS - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D LE36250LS - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | LE36250LS |
| Series | LE |
| 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 | LE |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 2 AWG - 500 kcmil (Al) or 2 AWG - 600 kcmil (Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 2 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LS |
| Trip Function | Long-Time, Short-Time |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Micrologic Series B Trip Unit, Load Side Lugs |
| 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, High Interrupting Capacity, Non-Interchangeable Trip |
Quantity
Square D LE36250LS - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | LE36250LS-R |
| Series | LE |
| 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 | LE |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 2 AWG - 500 kcmil (Al) or 2 AWG - 600 kcmil (Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 2 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LS |
| Trip Function | Long-Time, Short-Time |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Micrologic Series B Trip Unit, Load Side Lugs |
| 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, High Interrupting Capacity, Non-Interchangeable Trip |
Description
Engineered for industrial power systems, the LE36250LS is a 250A, 3-pole MCCB from Square D. It delivers robust performance for commercial facilities requiring advanced circuit protection. This I-Line breaker mounts into Square D panelboards and switchboards. For system upgrades, it is replaced by the LLA36250U33X along with an HNM1BL filler. The integrated Micrologic trip unit provides adjustable long-time and short-time (LS) functions, true RMS sensing, and a 65 kAIC rating at 480VAC.Specifications
| Brand | Square D |
|---|---|
| Part Number | LE36250LS |
| Series | LE |
| 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 | LE |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 2 AWG - 500 kcmil (Al) or 2 AWG - 600 kcmil (Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 2 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LS |
| Trip Function | Long-Time, Short-Time |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Micrologic Series B Trip Unit, Load Side Lugs |
| 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, High Interrupting Capacity, Non-Interchangeable Trip |
Product FAQs
8 answersWhat panelboards are compatible with the LE36250LS circuit breaker?
This breaker features an I-Line style plug-in connection designed exclusively for use in Square D I-Line power distribution panelboards and switchboards.
Can the LE36250LS be used in a standard QO load center?
No. Because it utilizes robust I-Line plug-on jaws on the line side, it cannot be installed in standard residential load centers or commercial panels that require clip-on or bolt-on branch breakers.
What conductor sizes are accepted by the lugs on this breaker?
The factory-installed load side lugs accept 2 AWG to 500 kcmil aluminum wire, or 2 AWG to 600 kcmil copper wire.
How does the I-Line mounting system physically install into the panel?
The line side features plug-on jaws that engage directly onto the panelboard bus stack. A built-in retaining screw is then tightened to secure the breaker firmly in place, eliminating the need for separate bus bar mounting hardware.
Do the I-Line line side connections require scheduled maintenance?
According to Square D engineering guidelines, the unique line side plug-on joint design of I-Line circuit breakers requires no routine maintenance once the unit is properly torqued and secured to the bus stack.
What do the L and S trip functions indicate on the LE36250LS?
The LS designation indicates the solid-state electronic trip unit includes adjustable Long-Time and Short-Time protection functions. This allows panel builders to precisely coordinate overload and short-circuit responses within the broader electrical system.
Is the LE36250LS an active or legacy product line?
The LE frame is a legacy molded case circuit breaker series from Square D. While still widely maintained in existing facilities, newer installations and panel upgrades typically utilize the modern PowerPact L-frame series.
What is the direct modern replacement for the LE36250LS?
For system upgrades, this breaker is commonly replaced by the Square D PowerPact LLA36250U33X. Because the newer PowerPact L-frame is narrower than the legacy LE frame, an HNM1BL filler plate is also required to safely cover the gap in the panel deadfront.
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