Eaton GHB2020A3 2020A 2-Pole 277 V Circuit Breaker

The Eaton GHB2020A3 2-Pole 277 V Circuit Breaker is engineered for commercial electrical systems that rely on 277-volt distribution. With a 20 A rating and two poles, it protects both hot legs in one compact device, delivering fast, predictable disconnection when overloads or faults occur.

Why this model stands out

• Two-pole protection for 277 V circuits — ensures simultaneous disconnection of both lines, reducing the risk of backfeed and improving overall panel safety for multi-wire branch circuits.
• 20 A application suitability — ideal for lighting feeders, small equipment loads, and other common commercial circuits that run on 277 V.
• Seamless Eaton compatibility — designed to integrate with Eaton panels and the GHB family, making upgrades and replacements straightforward without panel modifications.
• Precise identification and replacement — matching part number GHB2020A3 ensures correct fit and reliable performance in existing Eaton installations.

Ideal for whom and where

• Facility managers and electricians working in offices, schools, retail spaces, and healthcare facilities with 277 V electrical infrastructure.
• Projects involving retrofit or new-builds that require dependable protection for lighting, HVAC controls, and other 277 V circuits.
• Maintenance crews seeking a durable, area-optimized breaker that slots into standard Eaton enclosures with minimal downtime.

Practical use cases and guidance

• Install in panels serving lighting banks and mechanical systems to ensure quick isolation during faults.
• Pair with other compatible GHB breakers to create a robust, organized protection scheme across multi-branch 277 V circuits.
• Plan circuit loading carefully to take advantage of the 20 A rating, preventing nuisance trips while safeguarding downstream equipment.

Installation and care tips

• Power down the main and verify voltage at the panel before replacement.
• Insert into the proper two-pole slot of an Eaton panel designed for GHB-series breakers, ensuring firm engagement.
• Follow standard safety practices and refer to panel manufacturer guidelines for torque and clearance.

Equip your commercial electrical system with the Eaton GHB2020A3 for reliable, standards-aligned protection of 277 V circuits. This is the precise, purpose-built choice for maintaining safety, performance, and ease of maintenance across your building’s critical loads.