Square D | NX361000 | Circuit Breaker | 1000A | 3-Pole | 600V

The Square D NX361000 Circuit Breaker is a high-capacity protection device engineered for demanding electrical systems. With a 1000A rating in a 3-pole configuration and a 600V rating, this breaker provides reliable fault protection for three-phase panels and setups that require durable, OEM-grade performance.

Why buyers choose NX361000

• Exact compatibility: The NX361000 part number is the best reference for matching this breaker to your Square D panel or enclosure. Always confirm fit and ratings before ordering to avoid mismatches.
• Heavy-duty capacity: 1000A uninterrupted protection for power feeders and main distribution circuits in industrial, commercial, or data-center environments.
• Three-pole design: Perfect for 3-phase systems, ensuring coordinated trip and reliable shutdown across all three lines when fault conditions occur.
• Wide voltage range: Rated for up to 600V, suitable for typical industrial and commercial electrical infrastructure.

Recommended use cases

• Maintenance: Replacement for worn or failed NX361000 units in existing Square D installations, matching the exact spec to minimize downtime.
• Retrofit: Updating legacy panels that require a 3-pole, 600V, 1000A protective device to maintain safety margins and code compliance.
• Replacement: Quick swap when an in-service breaker reaches end-of-life; keep the same amperage, pole count, and voltage rating to preserve circuit protection characteristics.

How to verify fit and maximize performance

• Check your panel's labeling and service requirements to confirm it supports 1000A breakers and 600V operation.
• Cross-reference the equipment list or panel catalog with the NX361000 part number for a seamless installation.
• Consult a qualified electrician if you’re unsure about whether a precise fit is available for your switchgear or distribution board.

Designed for durability in service conditions where reliable circuit protection is non-negotiable, the NX361000 is a practical, OEM-grade choice for professionals maintaining or upgrading Square D installations.