Square D MGA36400 - 400 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Square D MGA36400 is a 400 A, 600 V, 3-Pole Plug-In Molded Case Circuit Breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Built with a fast plug-in connection, it enables quick installation and simple replacement, minimizing downtime during maintenance or upgrades.

• Fast plug-in connection: Quick installation and effortless replacement in service panels, reducing labor time during upgrades or fault repair.
• Thermal-magnetic trip unit: Provides stable, repeatable protection against overcurrent and short-circuit events, helping to guard connected equipment from damage.
• 3-pole design: Balanced three-phase protection suited for commercial and light industrial electrical systems.
• 400 A, 600 V rating: Handles heavy-duty branch circuits while maintaining reliable performance across demanding loads.
• OEM-compatible: Designed to pair with matching Square D load centers and panelboards for guaranteed electrical fit and performance.
• Application versatility: Appropriate for residential, commercial, and light industrial applications where dependable circuit protection is required.

Key uses and scenarios

• Installing new panelboards or replacing aging breakers in commercial buildings, facilities, or light industrial environments.
• Retrofits and service upgrades where a robust, plug-in solution is preferred for minimal downtime.
• Protection of large-draw circuits and three-phase loads in distributed electrical systems.

Technical specifications

• Manufacturer: Square D
• Part number: MGA36400
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 400 A
• Voltage rating: 600 V
• Poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection