Eaton FD1090L - 277 V, 1-Pole Circuit Breaker | AmpState

Engineered for dependable branch circuit overcurrent and short-circuit protection, the Eaton FD1090L 277V, 1-Pole molded case circuit breaker is designed to fit neatly into panelboards and loadcenters. Its compact design maximizes usable space in tight electrical panels, making it a smart choice for commercial, residential, and light industrial installations where reliable protection matters.

Why this breaker stands out

• Compact molded case design optimizes panel space without compromising protection.
• Thermal-magnetic trip unit delivers stable, repeatable overcurrent protection with fast magnetic response to short circuits.
• 277V single-pole configuration tailored for common commercial lighting and small equipment circuits.
• OEM panel compatibility designed to pair with matching Eaton loadcenters and panelboards for seamless upgrades or new installs.
• Versatility across applications suitable for residential, commercial, and light industrial environments where reliable circuit protection is essential.

Technical specifications at a glance

• Manufacturer: Eaton
• Part Number: FD1090L
• Type: Thermal-magnetic molded case circuit breaker
• Voltage Rating: 277 V
• Number of Poles: 1
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases

Use the FD1090L to safeguard 277V branch circuits feeding lighting, receptacle strips, or control circuits in office complexes, retail spaces, schools, or light industrial facilities. The thermal element handles sustained overloads, while the magnetic mechanism trips promptly on short circuits, helping prevent wiring damage and equipment downtime. This breaker is a reliable replacement in compatible Eaton panelboards and supports a consistent protection strategy across your electrical system.

Installation and safety tips

• Verify the panelboard or loadcenter is rated for 277V and supports a 1-pole molded case breaker of this type.
• Use with appropriately sized conductors and follow torque specifications from the manufacturer.
• For high-voltage installations, rely on a licensed electrician to ensure code compliance and safe operation.