Eaton HBAX3040H - 40 A, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton HBAX3040H is a 40A, 3-pole bolt-on molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to endure in real-world installations, its secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, helping maintain consistent electrical performance in both new builds and upgrades.

Equipped with a thermal-magnetic trip unit, the HBAX3040H provides stable, repeatable protection across varying loads and temperatures. The thermal element handles sustained overloads, while the magnetic element delivers a fast, decisive response to short circuits—minimizing equipment damage and downtime without nuisance trips.

Designed for seamless integration, this breaker is compatible with matching OEM loadcenters and panelboards, making it a reliable choice for Eaton-based systems in residential, commercial, and light industrial settings.

Key specifications at a glance

• Manufacturer: Eaton
• Part Number: HBAX3040H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40 A
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Who benefits from the HBAX3040H

• Electrical contractors and technicians installing or upgrading Eaton-based panelboards and loadcenters
• Facility managers overseeing commercial spaces and light industrial environments
• Residential installers seeking durable, reliable protection for multi-wire and three-phase distribution, where applicable

Practical use cases and benefits

• Protects critical branch circuits in panelboards where stable protection and long-term reliability are essential
• Ideal for retrofit projects that require compatible, OEM-mitted components to maintain system integrity
• Suitable for environments with periodic vibration or movement, thanks to secure bolt-on mounting that reduces bus connection stress

Installation and compatibility considerations

To maximize performance, pair the HBAX3040H with matching Eaton OEM loadcenters and panelboards. Follow standard safety practices and the panel manufacturer’s guidelines for installation. The bolt-on design simplifies mounting and serviceability, helping technicians perform quick replacements or upgrades with minimal downtime.

In practice, the HBAX3040H delivers clear advantages: a robust physical connection through bolt-on mounting, precise thermal-magnetic protection for consistent response to faults, and reliable compatibility within Eaton’s panel and loadcenter ecosystem. For projects requiring solid, field-proven protection on 40-amp circuits within three-pole configurations, this breaker provides a dependable, turnkey solution that fits seamlessly into established Eaton installations.