Square D | FAF16100 | Circuit Breaker | 100A | 1-Pole | 277V

Upgrade or maintain your electrical protection with Square D FAF16100 — a robust 100A, 1-pole circuit breaker designed for 277V circuits. This genuine Square D solution is built for reliability in commercial, industrial, and large-residential panel configurations that use 277V distribution.

Whether you're performing routine maintenance, a retrofit, or a replacement in an aging panel, FAF16100 offers a precise fit where matching specs matters. With this unit, you preserve correct circuit protection and the overall safety of your electrical system, ensuring continued operation without compromise.

Specs at a glance

• Amperage: 100A
• Poles: 1-Pole
• Voltage: 277V
• Part number: FAF16100
• Brand: Square D

Key benefits and use cases

• Direct-fit replacement for Square D panels that require FAF16100, reducing downtime during maintenance.
• Solid single-pole protection for 277V circuits such as commercial lighting, control circuits, and certain motor feeders in suitable installations.
• Retrofit and upgrade projects benefit from the consistency and reliability associated with the Square D line.
• Clear reference for compatibility: the part number FAF16100 remains the most reliable identifier when checking panels and listings.

Installation notes and best practices

Important: Confirm fit and ratings before ordering. Use the FAF16100 part number as your primary compatibility reference to ensure it matches your panel’s listing and the intended 277V service. If you're unsure, consult your panel documentation or a licensed electrician to verify compatibility.

Practical insights for real-world use

In busy electrical spaces, having the right breaker on hand minimizes downtime and keeps critical circuits protected. The Square D FAF16100 brings trusted performance to your 277V single-pole applications, aligning with existing panel infrastructure and simplifying procurement with a clear, specification-driven reference.