Square D | NEF36900LSG | Circuit Breaker | 900A | 3-Pole | 600V

Meet the Square D NEF36900LSG circuit breaker—a purpose-built solution for high-demand electrical systems. This 900 A, 3-Pole unit is designed for maintenance, retrofit, and replacement projects where exact specifications matter, delivering dependable protection in heavy-duty power environments at 600V.

Key specifications

• Amperage: 900 A
• Poles: 3-Pole
• Voltage: 600 V
• Part reference: NEF36900LSG

Why this NEF36900LSG matters for your system

In industrial and commercial settings, protecting high-current circuits is essential to prevent outages and equipment damage. The Square D NEF36900LSG is built to endure demanding service conditions while providing reliable, three-phase protection for large distribution panels and motor-driven loads. Use this breaker when your panel or retrofits require the exact 900 A, 3-Pole, 600V specifications to maintain system safety and performance.

Ideal applications

• Maintenance and retrofit projects in industrial control panels
• Replacement of aged or non-matching 3-phase breakers in commercial facilities
• High-current power distribution setups in manufacturing floors and utility rooms

Installation and compatibility notes

Before ordering, confirm fit and ratings for your specific panel. The part number NEF36900LSG is the best reference for compatibility, ensuring the replacement aligns with your bus configuration and overall electrical design. If you’re upgrading or replacing a similar 3-pole, 600V unit, this breaker offers a straightforward, reliable path to restoring protection and minimizing downtime.