Square D FH16080A 16080A 1-Pole 277 V Circuit Breaker

Meet the Square D FH16080A — a genuine, OEM 1-pole circuit breaker engineered for 277 V commercial distribution. This model is designed to protect single-phase circuits in lighting, control gear, and other 277-volt applications, delivering reliable, consistent protection when it matters most. With the part number FH16080A clearly identified, you know you’re getting an exact match for your Square D panels and maintenance needs.

Why choose the FH16080A for 277 V systems

• Exact-fit OEM compatibility: Specifically designed to pair with Square D panels, ensuring proper fit, panel labeling alignment, and dependable operation without the guesswork that comes with aftermarket replacements.
• 1-pole design for focused protection: Ideal for single-phase circuits common in commercial lighting and auxiliary power feeds, where protecting a dedicated leg helps minimize downtime and electrical risk.
• Clear electrical rating: Current rating listed as 16080 A with a voltage rating of 277 V, so you know the exact protection level and operating voltage you’re deploying in your system.
• Predictable trip behavior: Engineered with a thermally aided trip mechanism to respond quickly to overloads and short circuits, helping safeguard wiring, devices, and powered loads from damage.
• OEM reliability and traceability: As a Square D part, it provides consistent performance across installations and simplifies inventory management for service teams and facilities managers.

Ideal use cases

• Office and commercial spaces with 277 V lighting circuits and control wiring
• Building retrofit projects where existing Square D panels require genuine replacement breakers
• New installations in facilities powered by 277 V distribution where single-pole protection is appropriate
• Maintenance kits for service trucks and on-site audits to ensure panel integrity and safety compliance

What problems it solves

• Prevents nuisance mistrips by using a breaker designed for your specific Square D panel and 277 V application
• Protects wiring insulation, fixtures, and control devices from overload damage in commercial environments
• Streamlines replacement workflows by matching the exact part number (FH16080A) and electrical ratings

Practical tips for use

• Verify compatibility with your Square D panel model before replacement to ensure correct fit and labeling
• Disconnect power at the main and follow established safety protocols before installing or replacing breakers
• Keep a spare FH16080A on hand for planned maintenance or unexpected outages to minimize downtime

Specifications at a glance

• Part number: FH16080A
• Poles: 1
• Voltage rating: 277 V
• Current rating: 16080 A