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Square D LIL36450 Molded Case Circuit Breaker
- 450A
- 3 Pole
- Unit Mount
Square D
LIL36450
Molded Case Circuit Breaker
Brand
Square D
SKU
LIL36450
Quantity
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Square D LIL36450 - 450A 3 Pole Molded Case Circuit Breaker
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Description
Delivering superior short-circuit protection, the LIL36450 is a 3-pole, 450A current-limiting breaker rated for 200kAIC at 480V. By actively reducing let-through current during a fault, it safeguards sensitive downstream industrial components. This L-Frame MCCB utilizes a unit-mount configuration for integration into Square D switchboards and motor control centers. It includes thermal-magnetic trip functions and can be replaced by the modern LRL36600U31X when upgrading older systems.Specifications
| Brand | Square D |
|---|---|
| Series | LIL |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480Y/277VAC, 200kA @ 480VAC, 100kA @ 600Y/347VAC, 100kA @ 600VAC |
| Frame Type | LIL |
|---|---|
| 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, HACR, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated |
| Special Features | Current Limiting |
Product FAQs
5 answersWhat type of equipment is the LIL36450 designed to be installed in?
This unit-mount L-Frame breaker is designed for integration into Square D switchboards, motor control centers, and standalone enclosures. It features a feed-thru connection and is not compatible with I-Line panelboards.
What does the current-limiting designation mean for the LIL36450?
As a current-limiting breaker, it actively reduces the peak let-through current during a short-circuit fault. With a high interrupting capacity of 200kA at 480V, it provides superior protection for sensitive downstream industrial components.
What wire sizes are compatible with the lugs on this breaker?
The LIL36450 accepts dual cables per phase, accommodating two 2/0 AWG to 500 kcmil aluminum or copper conductors per terminal.
What do the LI trip functions and adjustability settings mean on the LIL36450?
The LI designation indicates Long-Time (L) protection for sustained overloads and Instantaneous (I) protection for short-circuit faults. This thermal-magnetic breaker features fixed thermal settings and adjustable magnetic settings, allowing for precise coordination with other protective devices.
What is the modern replacement for the legacy LIL36450 breaker?
When upgrading older systems, the legacy LIL36450 can typically be replaced by the modern PowerPact L-Frame series, such as the LRL36600U31X, depending on your specific trip unit and mounting requirements.
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