Eaton GBH3040 - 40 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton GBH3040 is a robust 40 A, 600 V, 3-pole bolt-on molded case circuit breaker designed for dependable branch circuit protection in panelboards and loadcenters. Built to endure demanding electrical environments, this unit delivers consistent, reliable performance when it matters most.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, helping maintain electrical integrity in busy panels and installations.
• Thermal-magnetic trip unit delivers stable, repeatable protection against overcurrent and short-circuit events, reducing nuisance trips and safeguarding wiring and equipment.
• 3-pole design suited for three-phase systems, while remaining compatible with matching OEM load centers and panelboards for streamlined installations.
• 40 A at 600 V rating offers reliable protection for a wide range of residential, commercial, and light industrial circuits.
• OEM-compatible engineered to integrate smoothly with Eaton’s own and OEM panelboards, ensuring a cohesive electrical distribution solution.

Key details at a glance:

• Manufacturer: Eaton
• Part Number: GBH3040
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why the GBH3040 stands out

Unlike generic breakers, the GBH3040 is purpose-built for reliable performance in panelboards and loadcenters where space, vibration, and consistent trip behavior matter. The combination of secure bolt-on mounting and a responsive thermal-magnetic trip unit means you’ll experience dependable protection across the life of your installation, whether you’re outfitting a home electrical panel, a commercial service disconnect, or light industrial equipment feed.

Ideal use scenarios include stocking a replacement in trade workshops, upgrading a commercial service panel, or distributing power to multiple 3-phase circuits in light industrial environments. This breaker is designed to pair with the right Eaton OEM panels for straightforward compatibility, reducing installation complexity and ensuring you have a coherent protection strategy across your electrical distribution.