Square D | FHF16080 | Circuit Breaker | 80A | 1-Pole | 277V

Square D FHF16080: 80A, 1-Pole Circuit Breaker for 277V Systems

When your electrical distribution relies on 277-volt circuits, the Square D FHF16080 delivers reliable, single‑pole protection with a precise 80‑amp rating. This breaker is purpose-built for maintenance, retrofit, and replacement projects where exact compatibility is essential, helping you keep critical loads safeguarded without unnecessary downtime.

Key specifications at a glance

• Amperage: 80A
• Poles: 1-Pole
• Voltage: 277V
• Part number: FHF16080
• Brand: Square D

Why this 80A, 1-Pole 277V breaker stands out

The FHF16080 is engineered to align with Square D’s reliability and design standards, ensuring smooth integration into compatible panels and distribution paths. Its 80‑amp capacity provides solid protection for circuits carrying substantial load, while the single‑pole configuration keeps wiring runs simple and accessible for service and maintenance tasks. Designed for environments where 277V distribution is standard—such as commercial lighting, feeders, and equipment circuits—this breaker prioritizes quick, predictable performance under load and fault conditions.

Ideal use cases

• Maintenance or retrofit of 277V circuits that require a precise 80A protection level
• Replacement in panels that list FHF16080 or require matching Square D part numbers for compatibility
• Retrofits in commercial or industrial electrical systems where 277V distribution is common

Compatibility and ordering guidance

Before purchasing, confirm fit and ratings against your panel’s labeling. The part number is the most reliable reference for compatibility, so use FHF16080 when searching or cross‑referencing in your panel schedule or manufacturer documentation.

Installation and safety notes

• Turn off power to the circuit and follow all applicable electrical codes during replacement or installation.
• Verify conductor sizes and torque requirements per panel manufacturer guidelines and local regulations.
• Use the breaker for its intended voltage and amperage ratings to ensure proper protection and avoid nuisance trips.

What you gain with Square D

Choosing the FHF16080 means aligning with a trusted brand known for consistent performance in protection devices. This breaker provides clear, predictable interruption of faulty or overloaded circuits, helping safeguard equipment and maintain electrical system integrity over the long term.