Square D HJL36100U43X - 100 A, 3-Pole Circuit Breaker | AmpState

From AmpState, the Square D HJL36100U43X delivers dependable 100 A, 3-pole protection for your panelboards and loadcenters. Its purpose-built design keeps your electrical distribution reliable while maximizing space efficiency in crowded panels.

• Compact molded case design minimizes space usage in panels, making it easier to fit, replace, or upgrade within tight electrical enclosures.
• Thermal-magnetic trip unit combines thermal overload sensing with magnetic instantaneous trip for stable, repeatable protection against both gradual overloads and sudden short circuits.
• 3-pole configuration supports three-phase circuits and heavier equipment loads commonly found in commercial and light industrial settings.
• OEM compatibility designed to be fully compatible with matching Square D OEM loadcenters and panelboards, ensuring smooth installation and proper coordination.
• Versatile for multiple environments suitable for residential, commercial, and light industrial applications, giving you a single solution across projects.

Technical specifications

• Manufacturer: Square D
• Part Number: HJL36100U43X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and loadcenters

Ideal for upgrading service capacity or replacing aging components, this 3-pole breaker provides reliable protection for three-phase loads, HVAC circuits, pumps, and other essential equipment. The precise trip characteristics help minimize nuisance trips while maintaining fast response during fault conditions, helping keep downtime to a minimum and your system operating smoothly.

If you’re stocking parts for maintenance or doing a panel refresh, choose the HJL36100U43X for seamless integration with Square D panels. Its built-for-purpose design means fewer compatibility concerns and straightforward installation, so you can trust it to protect your critical circuits today and for years to come.