Square D | NHF3612001021 | Circuit Breaker | 1200A | 3-Pole | 600V

Square D's NHF3612001021 circuit breaker is engineered for reliability in demanding electrical installations. Designed for maintenance, retrofit, and replacement projects where exact specifications matter, this 3-pole unit delivers dependable protection for three-phase systems in up to 600V environments. With a 1200A rating, it’s built to handle substantial load demands while maintaining safe, consistent performance.

Key Specifications

• Amperage: 1200A
• Poles: 3-Pole
• Voltage: 600V
• Part Number: NHF3612001021

What makes this breaker stand out

• Exact reference for compatibility: The part number NHF3612001021 is the best reference to ensure the breaker fits your panel and matches the required ratings.
• Ideal for three-phase systems: The 3-Pole design provides balanced protection across all phases in 600V applications.
• High-current capability: A 1200A rating supports large-distribution or heavy-load circuits within compliant electrical infrastructure.
• Versatile use cases: Specifically suited for maintenance, retrofit, and replacement scenarios where matching specs matters, minimizing downtime and compatibility concerns.

Ideal use cases

• Upgrading or replacing aging breakers in commercial or industrial panels that require 1200A capacity.
• Retrofit projects where a 3-pole, 600V circuit protection solution is needed to maintain three-phase safety and reliability.
• Maintenance scenarios that demand an exact spec match to avoid panel fit issues and ensure proper electrical clearances and performance.

Compatibility and fit verification

Notes: Confirm fit and ratings before ordering. The part number NHF3612001021 is the best reference for compatibility. Use this to match to your panel label, service equipment, and the required 3-pole configuration at 600V.

Installation and care tips

For safe and effective installation, ensure power is fully isolated and follow all local electrical codes. This breaker should be installed by a qualified electrician who can verify that the panel, bus, and mounting arrangement align with the 3-Pole 600V, 1200A specifications. After installation, perform a functional check to confirm proper tripping and reset behavior in accordance with the equipment manual.