Eaton GD2040 - 40 A, 480 V, 2-Pole Circuit Breaker | AmpState

Meet the Eaton GD2040—a compact 2-pole molded case circuit breaker built to safeguard your electrical system with dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Rated at 40 A and 480 V, this device is engineered for consistent performance in a variety of settings, from home electrical panels to light commercial installations.

Why the GD2040 stands out

• Compact molded case design: Optimizes panel space, making it easier to fit into tight electrical enclosures without sacrificing protection.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by combining thermal sensing with magnetic trip capability for clear fault discrimination and predictable responses under diverse loads.
• OEM-compatible: Designed to pair with matching Eaton OEM loadcenters and panelboards for straightforward upgrades or replacements, minimizing retrofit hassles.
• Versatile across sectors: Suitable for residential, commercial, and light industrial applications that require reliable 40 A, 480 V two-pole protection.

Technical snapshot

• Amperage rating: 40 A
• Voltage rating: 480 V
• Number of poles: 2
• Type: Thermal-magnetic molded case circuit breaker
• Part number: GD2040
• Application: Branch circuit overcurrent and short-circuit protection

Practical use scenarios

• New installations in panelboards and loadcenters where space is at a premium, yet robust protection is essential for 40 A circuits.
• Upgrading existing Eaton-based panels with a compatible 2-pole 40 A device to maintain consistent protection characteristics and wiring compatibility.
• Residential, commercial, and light industrial environments that require predictable performance for lighting, receptacle circuits, and common equipment loads at 480 V.

What this means for you

The GD2040 isn’t just another breaker. Its compact footprint, reliable thermal-magnetic trip, and OEM compatibility translate to fewer installation hurdles, faster service, and long-term confidence in your panelboard protection strategy. By choosing a breaker that aligns with Eaton’s panel systems, you minimize mismatch risks and simplify future maintenance or part replacement, all while delivering clear fault discrimination and steady protection for your critical circuits.

Tips for installation and longevity

• Confirm panelboard and loadcenter compatibility with the GD2040 to ensure seamless operation and proper electrical characteristics.
• Follow standard safety practices when connecting terminals; ensure secure torque and clean terminations to reduce contact resistance and overheating risk.
• In ongoing maintenance, periodically verify that the device remains clean and free of dust, and test fault response using appropriate diagnostic procedures in accordance with your program’s guidelines.