Eaton gfcb140 - 40 A, 120 V Circuit Breaker | AmpState

Meet the Eaton gfcb140 — a 40A, 120V molded case circuit breaker designed to deliver reliable branch circuit overcurrent and short-circuit protection in your panelboards and loadcenters. Built for enduring performance, it combines a compact form factor with a precision protection mechanism that keeps your electrical system safe and running smoothly.

• Space-saving molded case design: Optimizes panel space so you can fit more circuits without crowding the panel interior.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by accurately sensing both overloads and instantaneous faults, reducing nuisance trips.
• OEM-compatible: Designed to pair with matching Eaton loadcenters and panelboards for seamless replacement and consistent performance across installations.
• Versatile application: Suitable for residential, commercial, and light industrial environments, providing dependable protection where it matters most.
• Key specs at a glance: 40A, 120V, designed for branch circuit overcurrent and short-circuit protection in panelboards and loadcenters.

Why this breaker matters for your electrical system

The gfcb140 acts as the first line of defense against damaging electrical faults. By combining a molded case with a thermal-magnetic trip mechanism, it responds quickly to short circuits and moderate overloads, helping prevent insulation damage, fire risk, and unexpected outages. Its compact design also makes it easier to manage wire routing and labeling inside crowded panels.

Technical snapshot

• Manufacturer: Eaton
• Part Number: gfcb140
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 120V
• Application: Branch circuit overcurrent and short-circuit protection

Use case scenarios

• Upgrading a residential panel to add a dedicated 40A circuit for high-demand devices or appliances.
• Planning a commercial or light industrial panel setup where reliable 120V protection is essential and space inside the panel is at a premium.
• Replacing an older or OEM mismatch breaker in Eaton loadcenters to restore consistent trip characteristics and fit.

Choosing Eaton gfcb140: practical considerations

When your goal is dependable protection with straightforward replacement, the gfcb140 delivers. Its compatibility with Eaton’s family of panelboards and loadcenters means fewer compatibility concerns and more predictable installation outcomes. For technicians and property owners alike, it’s a reliable choice that supports safe, efficient electrical system operation across a range of commercial and residential applications.