Eaton BR140 - 40 A, 120 V, 1-Pole Plug-In Circuit Breaker | AmpState

Introducing the Eaton BR140 — a 40A, 120V, 1-pole plug-in circuit breaker designed for dependable branch circuit protection in panelboards and load centers. This molded-case breaker combines fast plug-in installation with precise, repeatable protection, making it a smart upgrade or replacement choice for residential, commercial, and light industrial electrical systems.

• Fast plug-in connection for quick installation and seamless replacement, minimizing downtime during panel upgrades or service calls.
• Thermal-magnetic trip unit delivers stable, repeatable protection against overcurrent and short circuits, helping reduce nuisance trips and protect connected equipment.
• OEM-compatible design — fully compatible with matching OEM load centers and panelboards, ensuring reliable operation within established electrical ecosystems.
• Versatile applications suitable for residential, commercial, and light industrial environments where dependable protection is essential.

Technical specifications at a glance

• Manufacturer: Eaton
• Part number: BR140
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 40A
• Voltage rating: 120V
• Number of poles: 1
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Why this breaker matters

The BR140 is more than a drop-in replacement — it’s a modular solution designed to keep electrical systems safe and performant. The plug-in design reduces installation complexity, while the thermal-magnetic trip mechanism adapts to real-world load changes, delivering predictable protection across a wide range of circuits. In panelboards and load centers where uptime matters, this breaker offers a straightforward path to upgrading protection without overhauling existing infrastructure.

Ideal use scenarios

Use the Eaton BR140 in service panel upgrades, panelboard expansions, or when refreshing aging protection. It's well-suited for circuits powering lighting, receptacles, HVAC controls, and other everyday loads in homes, small offices, retail spaces, and light industrial setups. When you need reliable, OEM-compatible protection that installs quickly, the BR140 is a practical, long-term choice.

Practical tips for optimal performance

Confirm the BR140’s compatibility with your current panelboard or load center before installation. Always follow local electrical codes and the panel’s labeling for correct replacement procedures. Keep the 40A rating in mind for circuits that demand robust protection without tripping under normal operation.

With its combination of fast plug-in installation, stable thermal-magnetic protection, and OEM compatibility, the Eaton BR140 40A 120V 1-pole plug-in circuit breaker is a reliable partner for safeguarding electrical systems while keeping downtime to a minimum.