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Square D LC36450 Molded Case Circuit Breaker
- 450A
- 3 Pole
- I-Line
Square D
LC36450
Molded Case Circuit Breaker
Brand
Square D
SKU
LC36450
Quantity
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Square D LC36450 - 450A 3 Pole Molded Case Circuit Breaker
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Square D LC36450 - 450A 3 Pole Molded Case Circuit Breaker
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| Brand | Square D |
|---|---|
| Part Number | LC36450 |
| Series | LC |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | (2) 4/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 4/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Extra High Interrupting Capacity, HACR Rated |
Quantity
Square D LC36450 - 450A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | LC36450 |
| Series | LC |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | (2) 4/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 4/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Extra High Interrupting Capacity, HACR Rated |
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Description
Engineered for heavy-duty industrial applications, the LC36450 is a 450A MCCB from Square D. It provides reliable overcurrent protection for commercial distribution networks. This breaker installs into Square D I-Line panelboards. For modern upgrades, it is replaced by the LJA36600U31X (adjusted to 450A). Rated 65 kAIC at 480VAC, it features a thermal-magnetic trip unit with fixed long-time and adjustable instantaneous (LI) functions. Load-side lugs are included.Specifications
| Brand | Square D |
|---|---|
| Part Number | LC36450 |
| Series | LC |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | (2) 4/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 4/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Extra High Interrupting Capacity, HACR Rated |
Product FAQs
6 answersWhat is the magnetic trip adjustment range for this breaker?
The LC36450 features a fixed thermal and adjustable magnetic trip unit [1.3.5]. The magnetic trip mechanism can be adjusted from a low setting of 2250 amps to a high setting of 4200 amps.
What is the standard load-side lug kit for the LC36450?
The standard factory lug kit is part number AL600LI5. These lugs are dual-rated for both aluminum and copper wire, and they accept two 4/0 AWG to 500 kcmil conductors per phase.
What series has replaced the legacy LC36450?
The legacy LC family has been superseded by the Schneider Electric PowerPact L-frame series. Because 450 amps is a non-standard rating in the modern lineup, panel builders typically substitute a 600-amp PowerPact electronic trip breaker dialed down to meet the 450-amp long-time requirement.
Are there placement restrictions when installing this breaker in an I-Line panelboard?
This breaker is broadly compatible with standard Square D I-Line distribution panelboards and switchboards. However, when installing legacy L-frame breakers in certain specific enclosures, such as HCW, HCP, or HCWM style panels, they are restricted to mounting exclusively on the left side of the bus.
What does the "C" in the LC36450 catalog number signify?
In the legacy Square D L-frame nomenclature, the "C" designates the Extra High Interrupting capacity tier. This differentiates it from the standard "LA" or high-interrupting "LH" models, providing elevated fault protection levels.
Is the LC36450 classified as a current-limiting circuit breaker?
No. While it provides extra-high interrupting ratings, it does not feature current-limiting technology. If your application requires a current-limiting breaker in this exact legacy footprint, you would need the LI36450.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
1 review
- DLDeanna L.Verified BuyerReviewingSquare D LC36600 - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/11/26Square D LC36600 - 600A 3 Pole Molded Case Circuit Breaker
Worked great! Our customer was very pleased with the results.