Square D | NEF361000LIG | Circuit Breaker | 1000A | 3-Pole | 600V

Meet the Square D NEF361000LIG circuit breaker — a purpose-built solution for high-demand electrical systems. Engineered for reliability in maintenance, retrofit, and replacement projects, this 1000A, 3-pole unit provides dependable protection for large, three-phase installations operating at up to 600V.

Why this model stands out

• Exact compatibility ensured by part number NEF361000LIG: When you’re upgrading or replacing in a crowded panel or distribution array, targeting the precise part reference minimizes guesswork and downtime.
• High-current robustness: With a 1000A rating, it’s designed to handle substantial load demands in industrial and commercial applications without compromising safety or performance.
• Three-pole protection for balanced power systems: 3-Pole construction ensures coordinated protection across all three phases, helping to prevent asymmetrical faults and equipment damage.
• 600V operation for versatile panel configurations: Suitable for a wide range of medium-voltage distribution panels and equipment setups common in manufacturing, data centers, and large facilities.
• Maintenance-friendly replacement option: Ideal for retrofits and refreshes, reducing system downtime while maintaining protective standards.

Key specifications

• Amperage: 1000A
• Poles: 3-Pole
• Voltage rating: 600V

Use cases and ideal applications

This circuit breaker is well-suited for:

• Upgrading aging electrical panels in manufacturing lines and processing facilities where high fault current protection is critical.
• Retrofits in large commercial buildings that rely on robust three-phase protection to safeguard motors, drives, and heavy equipment.
• Replacement in service panels and switchgear where the exact NEF361000LIG reference ensures seamless compatibility and performance continuity.
• Power distribution configurations that require reliable interruption in the event of overload or short-circuit conditions at 600V systems.

Compatibility and installation notes

Before ordering, confirm fit and ratings to ensure optimal performance within your specific enclosure. The part number NEF361000LIG is the best reference for compatibility, so cross-check this identifier against your panel’s documentation and any OEM specifications. Follow standard electrical installation practices and the manufacturer’s instructions for mounting, wiring, and torque requirements to maintain safe operation.

Practical guidance for ongoing reliability

• Keep a spare NEF361000LIG on hand for planned maintenance or rapid replacements to minimize panel downtime.
• Store spare breakers in a cool, dry environment to preserve insulating integrity and mechanical reliability.
• Document the replacement part number in your asset registry to simplify future servicing and audits.