Square D | NEF36800LIG | Circuit Breaker | 800A | 3-Pole | 600V

When your industrial or commercial three-phase system demands serious protection, the Square D NEF36800LIG circuit breaker stands up to the challenge. This 800A, 3-pole device is engineered for 600V service, delivering dependable interruption capabilities to safeguard motors, drives, and other heavy-load equipment in demanding environments.

• Amperage: 800A
• Poles: 3-Pole
• Voltage rating: 600V
• Part number: NEF36800LIG — the most reliable reference for compatibility
• Intended use: maintenance, retrofit, and replacement in compatible Square D installations

The NEF36800LIG is built for direct replacement scenarios where exact specifications matter. With a three-pole design, it provides synchronized protection across all phases, helping maintain balanced operation and protecting downstream equipment from overcurrent events in high-demand circuits.

Ideal use cases

• Maintenance and retrofit projects in large electrical panels that service heavy machinery or process lines
• Replacement of failed or aging breakers in 3-phase, 600V power systems
• Permanent installations where a precise 800A, 3-pole, 600V specification is required for reliability

Key considerations and compatibility

Before ordering, verify that your equipment and panel are rated for 800A and 600V and that the physical form factor matches the NEF36800LIG. The part number is the best reference to ensure a correct fit and reliable performance, minimizing downtime and installation risk in critical systems.

What this means for you

Choosing the NEF36800LIG means opting for a high-current circuit protection solution designed for real-world, in-service reliability. It’s not just about specs on a page—it’s about safeguarding expensive equipment, reducing unplanned outages, and streamlining maintenance with a part that aligns precisely with your system’s requirements.