Eaton HFD1125L - 277 V, 1-Pole Circuit Breaker | AmpState

The Eaton HFD1125L is a 277 V, 1-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its compact footprint helps maximize usable space in crowded electrical panels, making it a practical choice for both new installs and upgrades.

Why choose the Eaton HFD1125L

• Compact molded case design minimizes takedown and frees panel space, simplifying layout and future expansion.
• Thermal-magnetic trip unit provides stable, repeatable protection performance across varying temperatures and fault conditions, reducing nuisance trips and ensuring reliable circuit safety.
• OEM-compatible engineered to pair with matching Eaton OEM load centers and panelboards, streamlining installation and guaranteeing proper physical and electrical fit.
• Versatile across environments suitable for residential, commercial, and light industrial applications where 277 V circuits are common.

Key applications and use cases

Designed for branch circuit protection in panelboards and load centers operating at 277 V, the HFD1125L is ideal for commercial lighting circuits, small business electrical feeders, and other 277 V distribution needs. Its compact form factor makes it suitable for retrofit projects where space is at a premium, while the reliable thermal-magnetic protection helps ensure safety and continuity in everyday operation.

Specifications at a glance

• Manufacturer: Eaton
• Part Number: HFD1125L
• Type: Thermal-magnetic molded case circuit breaker
• Voltage Rating: 277 V
• Number of Poles: 1
• Application: Branch circuit overcurrent and short-circuit protection

Practical tips for optimal performance

• Pair the HFD1125L with the corresponding OEM load center or panelboard to ensure proper mounting geometry and electrical compatibility.
• Consider panel layout and conductor routing to take advantage of the breaker’s compact design, especially in densely populated panels.
• Verify the circuit’s voltage class and current requirements match the 277 V, 1-pole protection profile to maintain effective protection without nuisance tripping.

Engineered for reliability and ease of integration, the Eaton HFD1125L helps you safeguard branch circuits with precision while keeping your panel design streamlined. Whether you’re upgrading an older installation or designing a new commercial space, this 277 V, 1-pole molded case breaker offers a durable, compatible solution that aligns with Eaton’s panelboard ecosystem.