Square D LE36400LS Molded Case Circuit Breaker
- 400A
- 3 Pole
- I-Line
Quantity
Square D LE36400LS - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Quantity
Square D LE36400LS - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | LE36400LS-R |
| 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 |
|---|
| 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 | 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 LE36400LS - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | LE36400LS-R |
| 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 |
|---|
| 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 | 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 applications, the LE36400LS is a 400A, 3-pole MCCB from the legacy L-Frame series. It features a Micrologic electronic trip unit for adjustable long-time and short-time (LS) protection. It mounts into Square D I-Line panelboards. For modern upgrades, it is replaced by the PowerPact LLA36400U33X (requires HNM1BL filler). Rated 65kAIC at 480V, it delivers high-interrupting capacity and true RMS sensing for accurate response.Specifications
| Brand | Square D |
|---|---|
| Part Number | LE36400LS-R |
| 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 |
|---|
| 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 | 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
6 answersHow much mounting space does the LE36400LS require in an I-Line panel?
As a 3-pole L-frame breaker, it requires 6 inches of bus mounting space in a Square D I-Line panelboard or switchboard.
What does the LS trip function mean on this Micrologic breaker?
The LS designation indicates the electronic trip unit features adjustable Long-Time and Short-Time trip functions. This allows for precise overcurrent coordination, but it does not include an Instantaneous or Ground Fault trip setting.
What is the modern replacement for the legacy LE36400LS?
The LE series is a legacy L-frame breaker. For modern upgrades, it is typically replaced by a PowerPact L-frame breaker, such as the LLA36400U33X. Upgrading to the PowerPact series in an older panel requires an HNM1BL filler plate.
Can I install this breaker in a standard QO or NF load center?
No. The LE36400LS features an I-Line plug-on connection and is exclusively compatible with Square D I-Line panelboards and switchboards.
What wire sizes are accepted by the standard lugs on the LE36400LS?
The standard lugs accept either one 1 AWG to 600 kcmil aluminum or copper wire, or two 1 AWG to 250 kcmil aluminum or copper wires per phase.
Is the trip unit on the LE36400LS interchangeable?
No, the Micrologic Series B trip unit on the LE36400LS is a non-interchangeable, factory-installed solid state trip unit.
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