Schneider ElectricLJA36600U43X
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Schneider Electric LJA36600U44X Molded Case Circuit Breaker
- 600A
- 3 Pole
- I-Line
Schneider Electric
LJA36600U44X
Molded Case Circuit Breaker
Brand
Schneider Electric
SKU
LJA36600U44X
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Schneider Electric LJA36600U44X - 600A 3 Pole Molded Case Circuit Breaker
New
Quantity
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Schneider Electric LJA36600U44X - 600A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Schneider Electric |
|---|---|
| Part Number | LJA36600U44X |
| Series | LJA |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 240-600A |
|---|
| Frame Type | LJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (2) 3/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 6.3A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Padlock Attachment, Communication Module |
|---|---|
| Accessories | MicroLogic 6.3A 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 | Current Limiting, 80% Rated, Visual Trip Indicator, True RMS Sensing, HACR Rated, RoHS Compliant, Mercury Free |
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Schneider Electric LJA36600U44X - 600A 3 Pole Molded Case Circuit Breaker
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| Brand | Schneider Electric |
|---|---|
| Series | LJA |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 240-600A |
|---|
| Frame Type | LJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (2) 3/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 6.3A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Padlock Attachment, Communication Module |
|---|---|
| Accessories | MicroLogic 6.3A 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 | Current Limiting, 80% Rated, Visual Trip Indicator, True RMS Sensing, HACR Rated, RoHS Compliant, Mercury Free |
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Description
The Schneider Electric LJA36600U44X is a 600A, 3-pole MCCB from the PowerPacT L-Frame series. It is engineered to provide reliable electronic trip protection for 600VAC systems. Featuring an I-Line mounting style, this breaker installs seamlessly into Square D I-Line panelboards and switchboards for commercial and industrial distribution. It includes a MicroLogic 6.3A trip unit, delivering adjustable LSIG protection with integrated ground fault sensing. It boasts a 65 kAIC rating at 480V.Specifications
| Brand | Schneider Electric |
|---|---|
| Part Number | LJA36600U44X |
| Series | LJA |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 240-600A |
|---|
| Frame Type | LJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (2) 3/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 6.3A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Padlock Attachment, Communication Module |
|---|---|
| Accessories | MicroLogic 6.3A 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 | Current Limiting, 80% Rated, Visual Trip Indicator, True RMS Sensing, HACR Rated, RoHS Compliant, Mercury Free |
Product FAQs
5 answersWhat panels accept the LJA36600U44X breaker?
This PowerPacT L-frame breaker features an I-Line plug-in connection. It is designed exclusively for installation in Square D I-Line panelboards and switchboards. It is not compatible with standard bolt-on or plug-on commercial load centers.
Is the LJA36600U44X continuous duty rated at 100 percent?
No, this standard thermal-magnetic footprint breaker is strictly 80 percent rated. For compliance, continuous loads applied for three hours or more must not exceed 480 amps.
What does the U44X suffix designate on this circuit breaker?
The U44X suffix indicates the factory inclusion of a MicroLogic 6.3 A (Ammeter) electronic trip unit. This specific module provides an integrated ammeter and LSIG functionality for long-time, short-time, instantaneous, and ground-fault protection.
What are the torque requirements for the load lugs?
The tightening torque for the factory load lugs is 442.5 lb-in or 50 N.m. These lugs accept dual aluminum or copper conductors ranging from 3/0 AWG to 500 kcmil.
What safety mechanisms prevent overheating when swapping trip units on this frame?
PowerPacT trip units are secured with torque-limiting screws. The screw heads break off automatically when the correct mounting torque is reached, ensuring a secure connection and eliminating the risk of overheating from under-torqued internal contacts.
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 4 reviews.
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Rating
4 reviews
- BWBrian W.Verified BuyerReviewingSquare D LJA36400U31X - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/27/26Great!
Quick delivery
- JBJeffrey B.Verified BuyerReviewingSquare D LJA36600U31X - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/20/26Purchased breaker - Great experience
We recently needed to purchase a specialty breaker for a large commercial project. Zach, our account manager sprung into action and really made this a white glove experience. From communication to speed I was impressed the entire process. Will definitely be using super breakers for our future breaker needs. Would 1500% recommend!
- EVErik V.Verified BuyerReviewingSchneider Electric LJA36600U44X - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/11/26Purchase was easy.
The part was as described. Packing was excellent.
Thank you for the quick ship!
- KPKevin P.ReviewingSquare D LJA36600U31X - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars11/1/21Easy to order
fast shipping good condition