Square D LAL36300 - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Square D LAL36300 — a 300A, 600V, 3-pole molded case circuit breaker built to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Its compact design makes the most of limited panel space, while the thermal-magnetic trip unit provides stable, repeatable protection across a range of operating conditions.

Why this 3-pole molded case breaker stands out

• Compact, efficient design: Sized to maximize panel space without sacrificing performance, making it ideal for tighter installations or crowded electrical rooms.
• Thermal-magnetic trip unit: Combines heat-based overload protection with magnetic short-circuit protection for precise, reliable response and reduced nuisance trips.
• 3-pole configuration for 3-phase systems: Perfect for commercial and light industrial applications that rely on balanced three-phase power.
• 600V rated: Suited for higher distribution voltages in residential, commercial, and light industrial environments.
• OEM-compatible: Engineered to work seamlessly with matching Square D loadcenters and panelboards, ensuring straightforward installation and coordinated protection.
• Versatile applications: Well-suited for residential service upgrades, commercial feeders, and equipment protection in a variety of facilities.

What problems it solves

In the event of overloads or faults, the LAL36300 activates quickly to interrupt current and safeguard wiring, devices, and busbars. The thermal-magnetic design helps distinguish long-running overloads from brief fault events, supporting reliable operation of non-fault loads and minimizing unnecessary interruptions.

Technical snapshot

• Manufacturer: Square D
• Part number: LAL36300
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 300A
• Voltage rating: 600V
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal for

This breaker is a strong fit for projects that require reliable 3-phase protection at 300A, especially when using Square D panelboards and loadcenters. It’s a practical upgrade or replacement option for installers and facility managers aiming for consistent protection and straightforward compatibility.