Free Shipping Over $99
Square D LJL36600U33X Molded Case Circuit Breaker
- 600A
- 3 Pole
- Unit Mount
Square D
LJL36600U33X
Molded Case Circuit Breaker
Brand
Square D
SKU
LJL36600U33X
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D LJL36600U33X - 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 complex electrical systems, the Square D LJL36600U33X offers enhanced coordination through its MicroLogic 3.3S electronic trip unit. This 3-pole, 600A PowerPact L-Frame breaker delivers adjustable long-time, short-time, and instantaneous (LSI) protection, making it ideal for critical commercial infrastructure. The unit mount MCCB is rated for 65 kAIC at 480VAC and features true RMS sensing to ensure accurate response to overcurrents. It installs easily into Square D switchboards.Specifications
| Brand | Square D |
|---|---|
| Series | LJL |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 240-600A |
|---|
| Frame Type | LJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Enclosures |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | MicroLogic 3.3S Trip Unit (Factory Installed) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, True RMS Sensing, Visual Trip Indicator, 80% Rated, RoHS Compliant |
Product FAQs
8 answersWhat specific trip unit is included with the LJL36600U33X?
This breaker features a factory-installed MicroLogic 3.3S electronic trip unit, which is indicated by the U33X suffix in the catalog number.
What protective settings can be adjusted on the MicroLogic 3.3S trip unit?
The LSI designation means this solid-state trip unit allows you to configure Long-Time (pickup and delay for overload protection), Short-Time (pickup and delay for short circuits), and Instantaneous (high-level fault) trip settings to ensure proper system coordination.
What do the first three letters in the LJL36600U33X catalog number mean?
The first L stands for the PowerPacT L-Frame platform. The J indicates the specific interrupting capacity of 65kA at 480VAC. The second L signifies it is a unit-mount configuration designed to be bolted into place.
Can the LJL36600U33X be applied in a single-phase application?
Yes. PowerPacT L-Frame breakers with MicroLogic trip units are marked and suitable for single-phase use by utilizing any two poles, but they are limited strictly to 240VAC circuits.
What are the alternative part numbers if my application requires a different interrupting rating?
If you need a higher interrupting rating at 480V, look for the L-interrupting version (LLL36600U33X, rated 100kA). For a lower interrupting requirement, the G-interrupting version (LGL36600U33X, rated 35kA) is often a suitable substitute.
How does this breaker connect to the electrical bus or panel?
As a unit-mount breaker, it bolts directly to the mounting surface or enclosure and is fed via cables into the mechanical lugs, rather than plugging onto an I-Line busboard. The standard lugs accept two 2/0 AWG to 500 kcmil aluminum or copper conductors per phase.
Does the LJL36600U33X support field-installable accessories?
Yes, the PowerPacT L-Frame platform allows for field-installable internal accessories such as shunt trips, undervoltage releases, and auxiliary contacts that mount directly behind the front cover.
Is the trip unit on this breaker field interchangeable?
Yes. PowerPacT L-Frame circuit breakers feature field-interchangeable trip units. If your protection or metering requirements change, you can upgrade the trip unit without replacing the entire breaker frame.
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.