Square D | NA361200 | Circuit Breaker | 1200A | 3-Pole | 600V | Plug-In

Meet the Square D NA361200 Circuit Breaker—an industrial-grade, plug-in solution built for reliability in demanding three-phase environments. Rated at 1200A and 600V, this 3-Pole breaker is designed for maintenance, retrofit, and replacement projects where exact specifications matter and downtime matters.

Why this breaker stands out

• Plug-In convenience enables quick swaps in compatible panels, reducing service time and risk during maintenance or upgrades.
• Three-pole, three-phase protection provides balanced protection for motors and equipment across all phases, helping prevent unbalanced loads and nuisance tripping.
• High-current, reliable performance with a 1200A rating supports heavy motor loads, large drives, and critical distribution nodes without compromising protection.
• 600V electrical rating aligns with common industrial power distribution, giving you broader compatibility with standard panels and equipment.
• Trusted Square D build quality and compatibility with standard enclosures ensure predictable performance and easier integration into existing systems.

Who is this for? Ideal for panel upgrades, retrofit projects, or new installations where a robust, plug-in breaker is required to protect high-current three-phase circuits. It’s especially well-suited for manufacturing lines, processing facilities, and data-center feeder setups that rely on steady, uninterrupted power distribution.

Important compatibility notes

Before ordering, confirm fit and ratings. The NA361200 part number is the best reference for compatibility with your panel. Use this as your primary verification, and compare dimensions, mounting type, and electrical ratings to ensure a seamless replacement or retrofit.

Specifications at a glance

• Amperage: 1200A
• Poles: 3-Pole
• Voltage: 600V
• Mounting: Plug-In

Practical installation and usage tips

Plan for a straightforward swap in compatible Square D panels to minimize downtime. Ensure the panel is de-energized during replacement, verify that the plug-in connectors align with the enclosure’s bus bars, and follow the panel manufacturer’s guidelines for installation and safety. This breaker excels in retrofit and maintenance scenarios where a reliable, high-current, plug-in solution keeps critical systems online with minimal disruption.