Square D LCL36450 Molded Case Circuit Breaker
- 450A
- 3 Pole
- Unit Mount
Quantity
Square D LCL36450 - 450A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Quantity
Square D LCL36450 - 450A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | LCL36450 |
| Series | LCL |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC |
| Frame Type | LCL |
|---|---|
| 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 | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Extra High Interrupting Capacity, Common Trip, HACR Rated |
Quantity
Square D LCL36450 - 450A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Series | LCL |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC |
| Frame Type | LCL |
|---|---|
| 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 | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Extra High Interrupting Capacity, Common Trip, HACR Rated |
Description
Built for commercial and industrial power systems, the Square D LCL36450 is a 3-pole, 450A molded case circuit breaker. It belongs to the legacy L-Frame family. This unit-mount breaker installs into Square D switchboards and enclosures using standard lug terminals. For modern upgrades, this model is replaced by the PowerPact LJL36600U31X when adjusted to 450A. Rated for 65 kAIC at 480VAC, it features a thermal-magnetic trip unit with fixed long-time and adjustable instantaneous (LI) functions.Specifications
| Brand | Square D |
|---|---|
| Series | LCL |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC |
| Frame Type | LCL |
|---|---|
| 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 | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Extra High Interrupting Capacity, Common Trip, HACR Rated |
Product FAQs
8 answersWhat wire sizes and materials are compatible with the LCL36450 lugs?
The standard lugs accept two 2/0 AWG to 500 kcmil conductors per phase. They are rated for both aluminum and copper wire.
Where can the Square D LCL36450 be installed?
This unit-mount breaker is designed for use in Square D switchboards, motor control centers, and standalone enclosures. It is a bolt-on breaker and is not compatible with I-Line plug-on panelboards.
What does the LI trip function code mean on this breaker?
The LI designation indicates a thermal-magnetic trip unit with Long-Time and Instantaneous protection. The thermal element is fixed at 450A, while the magnetic instantaneous trip is adjustable to help coordinate with downstream devices or handle motor inrush currents.
Is there a modern replacement for the legacy LCL36450?
Yes, the legacy L-Frame series has been superseded by the Square D PowerPact L-Frame series. A modern equivalent is typically a PowerPact LJL36600U31X adjusted to 450A, though exact cross-referencing depends on your specific panel and mounting requirements.
Is the LCL36450 part of the PowerPact series?
No, the LCL36450 is part of the legacy Square D L-Frame series. It is an older generation molded case circuit breaker that predates the current PowerPact L-Frame lineup.
Does this breaker plug into a busbar?
No, the LCL36450 is a unit-mount, bolt-on circuit breaker. It requires bolted connections for installation and cannot be used in I-Line plug-on distribution panels.
What safety precautions should be taken before adjusting the magnetic trip settings?
Always ensure the breaker is completely de-energized and isolated from all power sources before making any adjustments to the trip unit or performing maintenance. Verify the absence of voltage using a properly rated meter.
What is the proper procedure for terminating conductors on the LCL36450?
Always use a calibrated torque wrench to tighten the lug screws to the manufacturer specified torque value printed on the breaker label. Improper torque can lead to thermal failure or arcing.
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 1 review.
- JLJon L.ReviewingSquare D LCL36300 - 300A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/30/21Obsolete Breaker Find
Looking for an obsolete SQ D breaker and Superbreakers had it. Saved the day.