Square D LHL36300 - 300 A, 3-Pole Circuit Breaker | AmpState

Meet the Square D LHL36300, a 300 A, 3-pole molded case circuit breaker designed to safeguard panelboards and loadcenters with dependable, long-lasting protection. Courtesy of AmpState, this device is built to perform reliably in a range of settings—from home electrical panels to light commercial and industrial applications.

Key advantages

• Compact molded case design that maximizes panel space without compromising protection.
• Thermal-magnetic trip unit delivers stable, repeatable protection across varying loads and temperatures, ensuring predictable operation during normal use and fault conditions.
• 3-pole configuration provides robust protection for 3-phase circuits and larger branch circuits.
• Designed for compatibility with matching OEM loadcenters and panelboards, enabling straightforward replacements and seamless upgrades.
• Ideal for residential, commercial, and light industrial applications requiring reliable branch circuit overcurrent and short-circuit protection.

Technical specifications

• Manufacturer: Square D
• Part number: LHL36300
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 300 A
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal applications

Use the Square D LHL36300 to protect large 3-phase branch circuits in panelboards and loadcenters. Its compact form helps when space is at a premium, while its robust protection keeps wiring and equipment safer in everyday operation and during fault events.

Practical use cases

• Upgrading or configuring service panels that require a 300 A, 3-pole protection device.
• Installing in new or existing commercial electrical rooms where dependable overcurrent protection is essential.
• Providing reliable short-circuit protection for light industrial electrical distribution systems.