Eaton BAB2040S - 40 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Eaton BAB2040S is a 40A, 240V, 2-pole bolt-on molded case circuit breaker engineered for reliable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. With a focus on solid, repeatable performance, it delivers a secure connection and dependable protection across a range of residential, commercial, and light industrial installations.

• Secure bolt-on mounting: A rigid, vibration-resistant bus connection that stays tight through normal operation and environmental movement.
• Thermal-magnetic trip unit: Combines precise thermal overload protection with magnetic short-circuit response for fast, consistent trips when faults occur.
• OEM-compatible design: Specifically crafted to pair with matching Eaton OEM loadcenters and panelboards for straightforward, reliable installations.
• Versatile, field-ready protection: Ideal for 40A circuits in residential panels, light commercial distribution, and retrofit projects where robust 2-pole protection is needed.

Technical snapshot

• Amperage rating: 40A
• Voltage rating: 240V
• Poles: 2-pole
• Mounting style: Bolt-on molded case
• Part number: BAB2040S
• Application: Branch circuit overcurrent and short-circuit protection

Ideal applications and use cases

• Upgrading or replacing aging breakers in Eaton panelboards and loadcenters to maintain consistent protection for 240V circuits.
• Provisioning a dedicated 40A circuit for robust appliances or equipment in residential and light commercial settings.
• Retrofits in spaces with vibration or heavy-duty usage where a secure, bolt-on connection improves reliability over time.

Installation and compatibility tips

Ensure your panelboard is designed to accept bolt-on 2-pole molded case breakers and is compatible with Eaton OEM components. Follow standard electrical safety practices and have a qualified electrician perform installation to ensure proper torque on the bolt-on mounting and a solid bus connection.

Choose the Eaton BAB2040S from AmpState for dependable, repeatable protection in your electrical system. This 40A, 240V, 2-pole bolt-on breaker combines rugged mounting, precise thermal-magnetic protection, and OEM compatibility to keep your panel running safely and efficiently.