Eaton | GHB3045I | Circuit Breaker | 45A | 3-Pole | 277V

The Eaton GHB3045I circuit breaker is a purpose-built protection solution for three‑phase electrical systems operating at 277V. With a 45A rating and 3-pole design, this unit is engineered for reliable, field-ready maintenance, retrofit, and replacement where exact specifications matter.

• Amperage: 45A
• Poles: 3-Pole
• Voltage: 277V
• Part number: GHB3045I — use this as the best reference for compatibility

Why it matters

• Three‑phase protection for commercial and industrial panels that run on 277V, ensuring proper coordination with other breakers and safely interrupting fault currents.
• Designed for maintenance, retrofit, and replacement scenarios where you need a precise match to existing specs and panel configurations.
• Rely on the part number as the most reliable guide to compatibility, reducing the risk of mismatched replacements in legacy or specialized systems.

Ideal use cases

• Upgrading or refurbishing commercial electrical panels that supply 277V three‑phase equipment.
• Replacements in plants, data centers, or facilities with distributed 277V circuits requiring 45A protection.
• Emergency or planned maintenance where quick, accurate part reference minimizes downtime and labeling changes.

What sets this Eaton breaker apart

• Designed to integrate smoothly with Eaton’s system architecture, helping maintain consistent trip characteristics and electrical performance within compatible panel environments.
• Clear, specification-driven fit guidance: confirm the exact fit and ratings before ordering to ensure seamless substitution in your existing setup.
• Practical for technicians and facilities teams who rely on a dependable, spec-accurate component to keep critical loads protected.

Practical tips for installation and care

• Before purchasing, verify that the panel labeling and service entrance wiring align with 277V, 3‑phase operation and that the 45A rating matches your protection needs.
• Have a qualified electrician review the panel’s compatibility and layout to ensure correct mounting, clearance, and trip setting coordination.
• Keep the exact part number (GHB3045I) as the primary reference during ordering to minimize compatibility risks across generations of Eaton equipment.

For maintenance teams and facilities engineers, the Eaton GHB3045I delivers a precise, dependable solution for safeguarding 277V three‑phase circuits. Its focused specs and compatibility guidance help you execute efficient replacements and dependable retrofits with confidence.