Square D LCP36300MT Molded Case Circuit Breaker
- 300A
- 3 Pole
- Bolt-On
Quantity
Square D LCP36300MT - 300A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built for industrial applications, the Square D LCP36300MT is a 3-pole, 300A molded case circuit breaker from the legacy L-Frame family. It provides reliable thermal-magnetic protection for demanding electrical systems. This bolt-on breaker installs into Square D switchboards, motor control centers, and enclosures. It serves as an exact replacement for older installations. Rated for 65kAIC at 480VAC, this unit features extra high interrupting capacity and includes load side lugs.Specifications
| Brand | Square D |
|---|---|
| Series | LCP |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| 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 Switchboards, Motor Control Centers, Enclosures |
| Wire Gauge | (1) 1 AWG-600 kcmil or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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 | Load Side Lugs Included, Plug-On Shroud |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Product FAQs
6 answersWhat types of equipment is the LCP36300MT designed to fit?
This legacy L-Frame breaker is designed for installation in Square D switchboards, motor control centers, and industrial enclosures.
What wire sizes are compatible with the lugs on this breaker?
The terminals accept either one 1 AWG to 600 kcmil conductor or two 1 AWG to 250 kcmil conductors per phase. The lugs are rated for both copper and aluminum wire.
How does the trip unit operate on the LCP36300MT?
It features a thermal-magnetic trip unit with fixed thermal protection for overloads and an adjustable magnetic setting. This allows you to fine-tune the instantaneous short-circuit response for your specific load.
Can this breaker be used in DC electrical systems?
Yes, in addition to its standard AC ratings, this breaker is rated for 250VDC applications with a 10kA interrupting capacity.
Is this a plug-on or bolt-on circuit breaker?
The LCP36300MT is a bolt-on breaker. It requires bolted connections for installation and is not compatible with plug-on panelboard systems.
Is the LCP36300MT still actively manufactured?
This model is part of the legacy L-Frame series. It is typically used as a direct replacement to maintain existing switchboards and motor control centers without requiring a complete system upgrade.
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