Square D HJL36100U31X - 100 A, 3-Pole Circuit Breaker | AmpState

Powerful, compact, and dependable—the Square D HJL36100U31X is a 100 A, 3-pole molded case circuit breaker designed to protect your electrical system where it matters most. Built to install neatly in panelboards and load centers, this breaker delivers reliable branch circuit overcurrent and short-circuit protection without hogging space.

Why this breaker stands out

• Space-efficient molded case design preserves panel room while delivering robust protection for essential circuits.
• Thermal-magnetic trip unit provides stable, repeatable protection performance, responding quickly to short circuits and reliably handling sustained overloads.
• Three-pole configuration ensures simultaneous protection of all three conductors in 3-phase systems, making it ideal for commercial and light industrial applications while still suitable for residential use where 3-phase equipment is present.
• OEM-compatible integration is designed to work with matching Square D load centers and panelboards, ensuring seamless pairing and dependable operation.
• 100 A rating offers strong protection for feeder and branch circuits, helping to prevent damage to wiring and connected devices.
• Purpose-built for protection specifically targets branch circuit overcurrent and short-circuit scenarios, reducing the risk of electrical faults escalating into equipment downtime.

Who benefits from the HJL36100U31X

Electrical professionals, facilities managers, and contractors who need a reliable, compact, and easy-to-integrate solution for 100 A, 3-pole protection. It’s well-suited for residential installations that use 3-phase equipment in limited spaces, as well as commercial and light industrial environments where panel space is at a premium and dependable protection is a must.

Use cases and practical applications

• Retrofit or upgrade projects in panelboards and load centers that require a 3-pole, 100 A protection device.
• Feeder protection for small commercial circuits that run 3-phase equipment like HVAC drives or lighting panels.
• New installations where OEM compatibility with Square D panels ensures consistent performance and straightforward replacement.
• Situations that demand a compact breaker with a proven thermal-magnetic trip for reliable response to faults.

Technical snapshot

• Manufacturer: Square D
• Part number: HJL36100U31X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100 A
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Square D HJL36100U31X when you need a dependable, space-conscious solution that aligns with your Square D panelboards and load centers, delivering consistent protection for critical circuits in residential, commercial, and light industrial settings.