Square D | FHP16090 | Circuit Breaker | 90A | 1-Pole | 277V

Meet the Square D FHP16090 Circuit Breaker — a robust, single-pole protector rated for 90 amperes and designed for 277-volt applications. Built for maintenance, retrofit, and replacement projects, this breaker helps keep commercial electrical systems safe and dependable when you need to upgrade or restore the protection you rely on.

Key specifications

• Amperage: 90A
• Poles: 1-Pole
• Voltage: 277V

Why this specific breaker matters

When working with 277V circuits in commercial environments, you need a precise match to maintain proper protection and panel compatibility. The FHP16090 is a single-pole, high-current solution built to align with fittings and ratings that require a 90A protection device at 277V. The part number itself is the most reliable reference for ensuring the fit with your panel and the correct electrical characteristics for your circuit.

Use cases and ideal applications

• Maintenance: Replace failed or aging breakers in 277V, single-pole circuit configurations.
• Retrofit: Upgrade branch circuits or service panels that require a 90A, 277V single-pole protective device.
• Replacement: Swap in a like-for-like part to restore original performance and safety standards.

Compatibility and installation tips

Before ordering, confirm that your panel accepts the FHP16090 or a breaker with identical ratings and physical fit. The part number is the best reference for compatibility, helping you avoid mismatches that could affect protection performance. For installation, ensure power is shut off and follow your panel’s labeling and local electrical codes. When in doubt, consult a licensed electrician to verify suitability for your specific 277V circuit and load requirements.

What you gain with this circuit breaker

Reliable overcurrent protection tailored for 277V single-pole circuits, designed to support high-demand applications in commercial environments. By matching amperage, voltage, and pole configuration exactly to your system, this breaker helps maintain electrical safety, minimize downtime, and simplify future maintenance or replacements.