Square D | NEF36900LIG | Circuit Breaker | 900A | 3-Pole | 600V

Meet the Square D NEF36900LIG circuit breaker—an high-capacity protection device engineered for demanding electrical systems. With a 900-amp rating, a 3-pole configuration, and a 600-volt rating, this breaker is built to safeguard three-phase power distribution in commercial and industrial environments where reliability matters most.

Designed for maintenance, retrofit, and replacement projects where exact specifications are essential, the NEF36900LIG offers a precise fit for compatible Square D panels and systems. When you’re upgrading or refurbishing an active electrical setup, you need a breaker you can trust to match performance and safety standards in real-world conditions.

• Amperage: 900A
• Poles: 3-Pole
• Voltage: 600V
• Best reference for compatibility: Part number NEF36900LIG
• Application: Maintenance, retrofit, and replacement where matching specs are required

Why this breaker stands out

For systems that demand robust three-phase protection, this NEF36900LIG unit delivers the precise current rating and configuration needed to support critical loads without overcomplicating the panel lineup. Its three-pole design aligns with typical industrial and commercial feeders, helping ensure consistent control of multi-phase power in demanding environments.

Ideal use cases

• Upgrading aging service panels to accommodate higher-capacity loads without changing the surrounding hardware.
• Retrofitting existing installations to a standardized 900A, 3-pole, 600V protection scheme.
• Replacing defective or worn breakers while preserving system specifications and safety compliance.

Helpful buying tips

To minimize downtime and ensure proper fit, rely on the part number NEF36900LIG as your primary compatibility reference. Always confirm fit and ratings before ordering, and coordinate with your panel manufacturer documentation to verify that this specific Square D breaker matches your enclosure and bus configuration.