Free Shipping Over $99
Square D LGA36600U44X Molded Case Circuit Breaker
- 600A
- 3 Pole
- I-Line
Square D
LGA36600U44X
Molded Case Circuit Breaker
Brand
Square D
SKU
LGA36600U44X
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D LGA36600U44X - 600A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
600A 3 Pole Molded Case Circuit Breaker
400A 3 Pole Molded Case Circuit Breaker
400A 3 Pole Molded Case Circuit Breaker
Description
Built for high-capacity power distribution, this 600A L-Frame MCCB provides robust protection for commercial and industrial facilities. The plug-on I-Line mounting style ensures rapid installation and secure phase connections without requiring individual cable terminations. Equipped with a MicroLogic 6.3A electronic trip unit, it delivers highly configurable LSIG protection, including ground fault sensing and an integrated ammeter for precise system monitoring.Specifications
| Brand | Square D |
|---|---|
| Series | LGA |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Frame Type | LGA |
|---|---|
| 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 | 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, Padlock Attachment, Motor Operator, 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, UKCA |
| Temp Rating | -25C to 70C |
| Construction Features | Current Limiting, HACR Rated, 80% Rated, Mercury Free, PVC Free, Integrated Ammeter |
Product FAQs
5 answersWhat does the U44X suffix mean in the LGA36600U44X catalog number?
The U44X suffix indicates this circuit breaker is equipped with a MicroLogic 6.3A electronic trip unit. In addition to adjustable Long-Time, Short-Time, Instantaneous, and Ground-Fault (LSIG) trip functions, it features an integrated ammeter for local current monitoring.
How much panel space does this PowerPacT L-Frame breaker require?
This 3-pole L-Frame circuit breaker requires 6 inches of I-Line mounting space on the bus. This is larger than the 4.5 inches typically required by smaller H-Frame or J-Frame I-Line breakers.
How many conductors are required per phase for the line and load lugs?
The factory-installed mechanical lugs on this 600A breaker are designed to accept two conductors per phase. Each terminal handles wire sizes from 2/0 AWG to 500 kcmil in either aluminum or copper.
Can I install this breaker in a Square D NF or NQ panelboard?
No. The LGA36600U44X uses a plug-on I-Line connection and is exclusively compatible with Square D I-Line panelboards and switchboards. It will not mount in NQ, NF, or QO series panels.
Does this circuit breaker provide equipment ground-fault protection?
Yes. The G in the LSIG trip function code stands for Ground-Fault protection. The MicroLogic electronic trip unit allows you to adjust both the ground-fault pickup and delay settings to meet specific electrical code requirements for your feeder or service entrance.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
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.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 3 reviews.
Total 5 star reviews: 3 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Search
Rating
3 reviews
- GGGregory G.Verified BuyerReviewingSquare D LGA36400U31X - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/29/26great
perfect
- PHPaul H.Verified BuyerReviewingSquare D LGA36400U31X - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/11/26Prompt Delivery
We needed this breaker promptly for a scheduled outage of an entire building electrical service and Superbreakers delivered.
- GMGreg M.Verified BuyerReviewingSquare D LGA36400U31X - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/24/26Received in a timely manner.
The breaker was as advertised.