Eaton BAB1040 - 40 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

The Eaton BAB1040 is a 40A, 120V, 1-pole bolt-on molded case circuit breaker engineered to safeguard electrical distribution in panelboards and load centers. Built for dependable branch circuit overcurrent and short-circuit protection, this breaker delivers stable, repeatable protection in demanding residential, commercial, and light industrial environments.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, helping minimize loose connections and nuisance trips in panels subject to motion or vibration.
• Thermal-magnetic trip unit combines precise overload sensing with fast short-circuit response, delivering predictable protection without sacrificing reliability or ease of maintenance.
• 1-pole, 40A, 120V design is ideal for protecting individual branch circuits that require 40A overcurrent protection at standard 120V service, aligning with common residential and light commercial wiring practices.
• OEM compatibility is guaranteed with matching load centers and panelboards, ensuring smooth integration into existing electrical systems without custom adapters or modifications.
• Versatile applications suitable for a range of settings—from home electrical closets and small offices to small retail spaces and light industrial enclosures—where reliable single-pole protection is essential.

Use cases and practical benefits

In a residential setting, the BAB1040 can protect individual branch circuits such as dedicated outlets, lighting runs, or HVAC accessories that require robust protection at 40A. In commercial environments, it supports critical circuits in small panels or subpanels, maintaining safety margins while allowing for straightforward expansion as your load grows. For light industrial applications, it offers dependable protection for motor-control circuits and auxiliary loads wired to 120V, ensuring quick disconnection during fault conditions.

Why this breaker stands out

Rather than adapting generic breakers to your panel, the Eaton BAB1040 is purpose-built for reliability in panelboards and load centers that demand secure mounting and repeatable trip performance. Its bolt-on design reduces the risk of board movement and connection fatigue, while the thermal-magnetic trip mechanism provides consistent protection across temperature variations and electrical noise. When you need a trusted, a straightforward single-pole solution that aligns with OEM equipment and standard 120V systems, the BAB1040 delivers.

Specifications at a glance

• Manufacturer: Eaton
• Part Number: BAB1040
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 120V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Investing in the BAB1040 means choosing a component designed for reliable performance, straightforward integration, and long-term safety in your electrical distribution system. Whether upgrading an existing panel or provisioning a new installation, this breaker delivers precise protection tailored to 120V, 40A, single-pole applications.