Square D JLA36250U43X - 250 A, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D JLA36250U43X—a 250A, 3-pole plug-in molded case circuit breaker engineered for durable branch-circuit protection in panelboards and load centers. Built to integrate with your existing Square D installations, it delivers fast, reliable protection where it matters most.

• Fast plug-in connection: Snap-in installation and easy replacement minimize downtime during panel service or upgrades.
• Thermal-magnetic trip unit: Combines precise thermal overload protection with magnetic short-circuit protection for stable, repeatable performance across varying loads and temperatures.
• OEM compatibility: Designed to fit matching Square D panelboards and load centers for a seamless, safe integration with your electrical distribution system.
• Versatile applications: Ideal for residential, commercial, and light industrial environments where reliable three-phase protection is essential.

Technical snapshot

• Manufacturer: Square D
• Part number: JLA36250U43X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 250 A
• Number of poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Why this breaker stands out

When you’re safeguarding critical electrical loads, reliability matters. The JLA36250U43X delivers precise protection without the nuisance trips common with lower-grade devices, thanks to its dual-stage thermal-magnetic trip. Its plug-in design reduces service time for maintenance or panel upgrades, so your critical systems stay online longer.

Who benefits

• Electrical contractors upgrading or stocking panels in commercial spaces or light industrial settings.
• Facility managers overseeing electrical distribution in multi-tenant buildings.
• Residential service panels where robust 3-phase protection is required for equipment or machinery.

Usage scenarios and practical notes

• Use in panelboards and load centers that require a 3-pole, 250A protection device with a plug-in mounting.
• Best for branch circuit protection where fast replacement and OEM compatibility with Square D products are priorities.
• Pair with matching Square D components to maintain consistent protection characteristics across a system and simplify future maintenance.

With the Square D JLA36250U43X, you gain a purpose-built solution that prioritizes installation efficiency, precise protection, and dependable performance across residential, commercial, and light industrial applications.