Square D GJL36050M05 - 50 A, 3-Pole Circuit Breaker | AmpState

Meet the Square D GJL36050M05 — a 50 A, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. With a compact molded-case footprint, this unit preserves precious panel space while maintaining robust safeguarding for critical electrical circuits in residential, commercial, and light industrial settings.

• Compact molded-case design — maximizes available space inside panels, making installation cleaner and service access simpler in crowded load centers.
• Thermal-magnetic trip unit — combines a thermal element for steady overcurrent protection with a magnetic element for instantaneous short-circuit tripping, delivering stable, repeatable protection across varying load conditions.
• OEM-compatible and reliable fit — engineered to pair with matching Square D OEM load centers and panelboards, ensuring straightforward replacement and dependable performance within existing systems.
• Versatile for multiple applications — an excellent choice for residential subpanels, light commercial electrical rooms, and small industrial installations that require solid 3-pole protection on 3-phase or multi-wire circuits.

Technical specifications

• Manufacturer: Square D
• Part number: GJL36050M05
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 50 A
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and practical scenarios:

• Replacing a failed 3-pole breaker in a commercial panelboard to restore balanced protection for 3-phase equipment and shared circuits.
• Upgrading a small industrial subpanel to a trusted, brand-mformed protection device that maintains consistent trip behavior under fault conditions.
• Integrating with existing Square D load centers to preserve panel zoning, maintain proper circuit segregation, and simplify future maintenance or upgrades.

Why choose this specific model? The GJL36050M05 delivers a proven combination of space efficiency, reliable thermal-magnetic protection, and OEM compatibility that translates into fewer installation hurdles and more predictable performance. If you’re equipping or upgrading panelboards and load centers where 50 A, 3-pole protection is required, this unit provides a dependable, well-matched solution built to work in real-world electrical systems.