Square D | NEF361000LSG | Circuit Breaker | 1000A | 3-Pole | 600V

Engineered for high-demand electrical environments, the Square D NEF361000LSG Circuit Breaker delivers dependable protection for large three-phase systems. Designed for maintenance, retrofit, and replacement projects where exact specifications matter, this 1000A, 3-pole device is built to safeguard heavy feeders in 600V distributions.

Key specifications

• Amperage: 1000A
• Poles: 3-Pole
• Voltage: 600V
• Part reference: NEF361000LSG (use this number to verify compatibility)

Why this Square D circuit breaker stands out

When your project requires a precise match to existing equipment, the NEF361000LSG provides the exact combination of amperage, pole count, and voltage that large, three-phase panels demand. The part number serves as the strongest compatibility reference, helping you avoid mismatches that could lead to downtime or safety concerns. Built to endure in demanding environments, it supports reliable protection for critical feeders and equipment in industrial settings.

Ideal use cases

• Retrofits: replacing aging or incompatible breakers with a like-for-like unit to restore original protection levels.
• Maintenance: swapping in a ready-to-install breaker that matches the panel’s design and rating.
• New installations: integrating a 600V, 3-phase protection device where a 1000A feed is required.

Practical guidance for selection and installation

• Always confirm fit and ratings before ordering; use the part number NEF361000LSG as the primary compatibility reference.
• Cross-check your panel’s documentation to ensure the 3-pole, 600V configuration aligns with existing wiring, bus bars, and enclosure space.
• Consider downstream components and wiring gauge to accommodate a 1000A rating safely within your electrical distribution system.

Whether you’re upgrading an older panel, performing a retrofit, or replacing a failed breaker, the Square D NEF361000LSG delivers the exact combination of 1000A, 3-pole, and 600V needed to protect your three-phase infrastructure. Build confidence into every install by aligning your part number with your panel’s specifications and following best-practice compatibility checks.