Schneider ElectricLJA36400CU44X
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Schneider Electric LJA36400CU43X Molded Case Circuit Breaker
- 400A
- 3 Pole
- I-Line
Schneider Electric
LJA36400CU43X
Molded Case Circuit Breaker
Brand
Schneider Electric
SKU
LJA36400CU43X
Quantity
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Schneider Electric LJA36400CU43X - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
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Schneider Electric LJA36400CU43X - 400A 3 Pole Molded Case Circuit Breaker
New
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| Brand | Schneider Electric |
|---|---|
| Series | LJA |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 160-400A |
|---|
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (2) 2/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 2/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 5.3A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Communication Module |
|---|---|
| Accessories | MicroLogic 5.3A Trip Unit |
| Standards | CSA C22.2 No 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NEMA, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | 100% Rated, Current Limiting, HACR Rated, Reverse Feed, True RMS Sensing, Visual Trip Indicator, Phase Loss Protection |
Quantity
Schneider Electric LJA36400CU43X - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Schneider Electric |
|---|---|
| Series | LJA |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 160-400A |
|---|
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (2) 2/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 2/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 5.3A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Communication Module |
|---|---|
| Accessories | MicroLogic 5.3A Trip Unit |
| Standards | CSA C22.2 No 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NEMA, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | 100% Rated, Current Limiting, HACR Rated, Reverse Feed, True RMS Sensing, Visual Trip Indicator, Phase Loss Protection |
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Description
Engineered for industrial environments, the Schneider Electric LJA36400CU43X is a 400A, 3-pole molded case circuit breaker from the PowerPacT L-Frame family. Designed for quick integration, it mounts into Square D I-Line panelboards and switchboards. The unit includes load lugs for (2) 2/0 AWG to 500 kcmil wire. The MicroLogic 5.3A trip unit offers adjustable LSI settings. It features a 100 kAIC rating at 240VAC, true RMS sensing, and phase loss protection.Specifications
| Brand | Schneider Electric |
|---|---|
| Series | LJA |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 160-400A |
|---|
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (2) 2/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 2/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 5.3A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Communication Module |
|---|---|
| Accessories | MicroLogic 5.3A Trip Unit |
| Standards | CSA C22.2 No 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NEMA, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | 100% Rated, Current Limiting, HACR Rated, Reverse Feed, True RMS Sensing, Visual Trip Indicator, Phase Loss Protection |
Product FAQs
7 answersWhat panelboards are compatible with the LJA36400CU43X?
This I-Line style plug-in breaker is designed specifically for installation in Square D I-Line panelboards and switchboards. It connects directly to the busbar system for fast integration.
What does the C in the LJA36400CU43X catalog number signify?
The C indicates that this breaker is 100 percent rated. This allows the breaker to carry its full 400A continuous current rating without the standard 80 percent derating requirement, provided it is installed in an appropriately rated enclosure.
What specific trip unit is indicated by the U43X suffix?
The U43X suffix designates a MicroLogic 5.3A electronic trip unit. This provides adjustable Long-Time, Short-Time, and Instantaneous (LSI) protection, along with an integrated ammeter for current monitoring.
What wire sizes are accepted by the load lugs on this 400A breaker?
The factory-installed load lugs accept two 2/0 AWG to 500 kcmil aluminum or copper conductors per phase.
How does the LJA36400CU43X mount into the electrical system?
It utilizes an I-Line plug-on connection for the line side, allowing it to mount directly onto the bus of an I-Line panelboard. The load side uses mechanical lugs for standard wire termination.
Does the MicroLogic trip unit provide True RMS sensing?
Yes, the MicroLogic 5.3A electronic trip unit utilizes True RMS sensing. This ensures accurate current measurement and reliable protection, even in environments with non-linear loads and harmonic distortion.
What does the LJA prefix indicate in the Square D catalog number?
In the PowerPacT nomenclature, L denotes the L-Frame, J indicates the interrupting rating tier (100kA at 240VAC, 65kA at 480VAC, 25kA at 600VAC), and A specifies the I-Line plug-on mounting style.
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